Kim M. Kerr, MD, FCCP

• Clinical Professor of Medicine
• Division of Pulmonary and Critical Care Medicine
• University of California, San Diego
• La Jolla, California

Instead erectile dysfunction vs impotence discount levitra plus 400 mg otc, they turn into memory cells why alcohol causes erectile dysfunction cheap levitra plus 400 mg without a prescription, which continue to produce small amounts of the antibody long after the infection has been overcome impotence vasectomy discount levitra plus. It is normally acquired either by contracting a disease and then developing immunity to it or by being vaccinated with proteins from the causative agent erectile dysfunction treatment new zealand levitra plus 400 mg order free shipping. For example erectile dysfunction guilt in an affair buy genuine levitra plus, a person with a normal immune system who contracts rubella (German measles) develops a lifelong immunity to the disease. Alternatively, a person may be vaccinated with dead rubella viruses to acquire immunity. In both cases, the immune system responds to proteins in the virus and develops a memory for it. The next time the person is exposed to the live virus, the immune system remembers its past exposure and attacks and kills the virus before it can cause an infection. Immunizing agents are broadly classified on the basis of the type of immunity they induce. Knowing the properties of the different types of immunity is fundamental to understanding immunizing agents and their applications. Active immunity is a form of acquired immunity that develops in an individual in response to an immunogen (antigen). This may be naturally acquired by exposure to an infectious disease or artificially acquired by receiving active immunizing agents (vaccines). Passive immunity involves the transfer of the effectors of immunity, which are called immunoglobulins or antibodies, from an immune individual to another. Immunizing Agents Immunizing agents are among the oldest of modern drugs and can be traced to the beginning of immunology in 1798, when Edward Jenner introduced his vaccine for smallpox. A vaccine is a preparation of killed microorganisms, living attenuated organisms that have reduced virulence, or living virulent organisms that are administered to produce or artificially increase immunity to a particular disease. Active immunizing agents have these advantages: They have been proven to be remarkably safe in actual practice. Active immunizing agents are immunogenic drugs that are usually administered to patients before their being exposed to diseases to provide long-term, even permanent protection against the diseases. Perhaps active immunization will one day be used for a variety of conditions, ranging from cancer to drug abuse. Passive immunizing agents date to the early part of the twentieth century after the discovery of Igs (antibodies). Various antitoxins derived from animals held an important place in therapy before the development of antibiotics, but these products-in contrast to the vaccines-had a number of problems with respect to efficacy and safety. Their main action is to prevent rather than to treat disease; most of the commonly used vaccines are highly effective. Chapter twenty Vaccines and Immunoglobulins 333 Focus On Vaccines Most vaccines consist of entire microorganisms that may be either attenuated (live; see Table 20-1) or inactivated (killed; see Table 20-2). One way to attenuate a virus is through laboratory manipulation, in which a bacterium is developed that lacks a toxin (a chemical produced by a microorganism that can be harmful), an enzyme, or some other normal constituent that causes symptoms of disease. It is important to understand that the live vaccines contain less immunogen than the killed vaccines and must actually cause an infection within the patient to induce a protective immune response. Another type of vaccine contains toxoids, which are protein toxins that have been modified to reduce their hazardous properties without significantly altering their antigenic properties. The oldest and best-known active immunizing agents are diphtheria toxoid and tetanus toxoid, which protect against the bacterial exotoxins. Whereas a simple vaccine is one that protects against a single disease, a combined vaccine is a combination product that protects against two or more diseases. Vaccines are used against a range of bacterial infections, including diphtheria, tetanus, pertussis, pneumonia, tuberculosis, typhoid, cholera, meningitis, plague, and Q fever. The most common adverse effects associated with vaccinations include localized inflammation at the site of injection, a mild fever, headache, malaise, nausea, and dizziness. Convulsions resulting in permanent brain damage have been reported after administration of pertussis vaccine, but these reactions are rare. In some individuals, an allergic reaction may occur immediately after vaccination. The recipient should be observed for a short time after the vaccine is administered, and adrenaline should always be available in case anaphylaxis occurs. The principle underlying vaccination is that exposure to an antigen (a virus or bacterium) in a relatively harmless form sensitizes immune cells for possible subsequent exposure to the organism. On re-exposure, the memory of the previous challenge triggers an immune response more quickly. Usually, more than one dose of the vaccine is required to trigger a rapid and full immune response. Immunizations are contraindicated in people with acute febrile illness, during pregnancy and lactation, and in those who are known to have developed anaphylactoid reactions with previous vaccines. When several vaccines are given at the same time, the potential for drug interaction is increased. An example of this situation would be when typhoid, cholera, and plague vaccines are administered together. The indications and recommendations for the use of vaccines depend on several factors, such as safety What are the important points patients should know Differentiate between inactivated and attenuated vaccines, and name two examples of each. Childhood immunization remains one of the most important public health measures in the United States. Haemophilus influenzae type b (Hib) was the leading cause of invasive bacterial disease. It should be considered only for people who meet specific criteria determined by a tuberculosis expert. Chapter twenty Vaccines and Immunoglobulins 335 table 20-3 recommended immunization Schedule for persons ages 0­6 years-United States, 2016 Courtesy of Centers for Disease Control and Prevention. Recommended Immunization Schedule for Persons Aged 0 Through 6 Years-United States, 2016. There has been no poliomyelitis in the Americas in recent years except when vaccine associated and in a few importation cases. Measles, mumps, and rubella (German measles) are three important viral diseases that can potentially be eradicated by mass active immunization. Hepatitis B infection is a major worldwide health problem with many facets, including acute and chronic disease, liver failure and cirrhosis, hepatic carcinoma, and chronic carriers. Neonates born to mothers who are positive for hepatitis B should be immunized immediately with the vaccine (Energix-B) and hepatitis B Ig. Varicella (chickenpox) is a highly communicable disease that is generally benign but also causes herpes and sometimes may be accompanied by serious complications, such as encephalitis and bacterial superinfection. Varicella is more serious in adults, particularly in immunodeficient individuals, in whom it can cause devastating disease. The varicella vaccine (Varivax) was licensed in 1995 and appears to be very effective in protecting against chickenpox, but it is much too early to completely evaluate the impact of the immunization program on the epidemiology of varicella-zoster. This vaccine is recommended for girls and women between the ages of 9 and 26 years. The best time for girls to receive this vaccine is ages 10­11 years (this age group is used because, ideally, the vaccine should be administered before the onset of sexual activity). Efficacy studies for this vaccine in men are ongoing, but currently no data support its use in men. Standards of Immunization for Adults Age 65 and Under Pertussis vaccine is not recommended for adults, but the other nine vaccines are commonly indicated under certain circumstances if there is no evidence of immunity, such as a reliable history of having the disease or positive serologic tests. Three circumstances in which it is particularly important that the pediatric immunizations are up to date are: 1. Individuals who travel internationally because some of these diseases remain prevalent in other parts of the world 2. Women of childbearing age who may become pregnant because the immunity (such as IgG) women transfer to the fetus depends on their immune status 3. Individuals with chronic illnesses because they may be more susceptible to a disease or its adverse effects the only routine immunization recommended for all normal adults between the ages of 18 and 65 is a booster dose (a dose given to increase the effectiveness of the original medication) of adult diphtheria and tetanus toxoid every 10 years. Unfortunately, many adults in this country do not comply with this recommendation and may not even be aware of it. Annual influenza immunization (Fluzone, FluShield) is recommended for those at high risk for influenza complications as well as those capable of nosocomial (hospital) transmission of influenza to high-risk patients. This vaccine should also be administered to patients with pulmonary or cardiovascular diseases, chronic hepatic or renal disorders, and diabetes mellitus. Meningococcal vaccine (Menomune A/C/Y/W-135) is recommended for some travelers and some closed populations in which outbreaks may occur. The only disease for which an International Certificate of Vaccination may still be required is yellow fever. Travelers to underdeveloped countries (and some developed countries) may find other vaccines recommended. This is sometimes called nonspecific immunotherapy, but the precise mechanism is unknown. The vaccine does promote a local inflammatory response that may be responsible for the antitumor effects. In 2009, H1N1 influenza A first appeared in Mexico, spreading to many countries all over the world. The World Health Organization named H1N1 (which was initially referred to as the "swine flu") a pandemic virus. It is available in killed and inactivated forms-either by injection or as a nasal spray. For children younger than age 10 years, the vaccine is administered in two separate doses-given 21­28 days apart. Severe infections and even deaths have occurred in every age group contracting the disease. In the first quarter of 2010, approximately 57 million cases of H1N1 occurred in the United States alone, causing nearly 12,000 deaths. Pregnant women should receive this vaccine, which will also help their babies to be more resistant to developing symptoms of the flu. For the 2010­2011 flu season, the H1N1 vaccine was combined with the seasonal flu vaccine. Explain how many boosters of adult diphtheria a person should receive between ages 18 and 65. Standards of Immunization for Adults Age 65 and Older Evaluation of immune status and appropriate vaccination at age 65 is important to the quality of the later years of life. Every individual should continue to receive adult diphtheria and tetanus toxoid boosters every 10 years. If this has not been done, it is important to update these vaccinations at age 65. Those at highest risk of fatal pneumococcal disease, such as individuals with asplenia (loss of the spleen), should receive a booster dose 5 years after the initial dose of the pneumococcal polysaccharide vaccine (Pneumovax 23, Pnu-Immune 23) (Table 20-4). The herpes zoster (shingles) vaccine causes an acute, inflammatory eruption of very painful vesicles, which affect the nerves in the skin. The virus lies dormant in the dorsal root ganglia and is usually reactivated after age 65. Stress appears to play a role in its reactivation, but the full reason is not understood. The subcutaneous Zostavax vaccine for shingles, licensed in 2006, is effective in approximately 50% of patients over age 60. Serious adverse reactions to the vaccine include chills, fever, breathing problems, sore throat, flu-like symptoms, severe or painful skin rash, and weakness. This vaccine is contraindicated in hypersensitive patients, with allergies to gelatin or neomycin, with immune system disorders, with use of immunosuppressants, and in women who have any possibility of becoming pregnant. Zostavax is also used to reduce the severity and incidence of posttherapeutic neuralgia. Focus on Geriatrics Influenza and Pneumonia Immunization ll individuals age 65 and older should receive annual influenza immunization and a single dose of pneumococcal polysaccharide vaccine. Those who received this vaccine before age 65 should receive a booster dose if it has been 5 or more years since the first dose. A 338 Unit three Drug Effects on Multiple Systems table 20-4 recommended adult immunization Schedule, 2016 Courtesy of Centers for Disease Control and Prevention. Chapter twenty Vaccines and Immunoglobulins 339 Focus On Immunoglobulins Globulins are proteins that contain antibodies and are present in blood. Igs are derived from human plasma containing antibodies that have been formed by the body to specific antigens. The antibody content is primarily IgG (90­98%) and their isotypes (atoms of a chemical element that have the same atomic number with nearly identical chemical properties but different physical properties). There are two types of Igs: one that should be administered intramuscularly and one that should be administered intravenously. They are standardized for antibodies to measles, diphtheria, and poliovirus to ensure reasonable uniformity of product, but they contain antibodies specific for numerous bacteria, viruses, and fungi. Passive immunization for measles is particularly important in children younger than 1 year of age because they are prone to measles complications and have not yet been vaccinated. It has also been used to prevent fetal damage in women who are exposed to rubella during the first trimester of pregnancy. As with all Ig products, serious anaphylactic reactions occur occasionally and are the most common selective Ig deficiency. Individuals receiving Igs receive antibodies only to the diseases to which the donor blood is immune. Instruct patients to report signs and symptoms of hypersensitivity and infusion symptoms of nausea, chills, headache, or chest tightness. Focus Point Site of Injection The dosage and the site for the injection vary according to the amount of Ig required and the size of the person (typically, the site is in the buttocks for adults and the leg or arm for children). Describe the reasons that the shingles vaccine is recommended more commonly after age 65 years.

Colorectal Dis 9(Suppl 2):3­8 Ergul E erectile dysfunction keeping it up order levitra plus line, Korukluoglu B 2008 Peritoneal adhesions: facing the enemy antihypertensive that causes erectile dysfunction buy genuine levitra plus line. Physiotherapy 95:314­320 Guimberteau J-C erectile dysfunction early age levitra plus 400 mg cheap, Armstrong C 2015 Architecture of human living fascia erectile dysfunction supplements order levitra plus on line. Handspring Publishing erectile dysfunction and pregnancy purchase 400 mg levitra plus overnight delivery, Edinburgh Hedley G 2010 Notes on visceral adhesions as fascial pathology. Breast Cancer Res Treat 110: 19­37 Lewit K, Olsanska S 2004 Clinical importance of active scars: abnormal scars as a cause of myofascial pain. J Manipulative Physiol Ther 27: 399­402 Moortgat P et al 2016 the physical and physiological effects of vacuum massage on the different skin layers: a current status of the literature. Knee Surg Sports Traumatol Arthrosc 17:328­333 Roques C 2002 Massage applied to scars. J Hand Ther 25:153­162 336 Chapter Chapter 19 Manual matrix remodeling in myofascial injuries: scar Manual matrix remodeling in myofascial injuries: scar modeling technique modeling technique Raúl Martínez Rodríguez, Fernando Galán del Río Raúl Martínez Rodríguez, Fernando Galán del Río Introduction Nowadays, muscle injuries are among the most common sports injuries suffered by athletes, accounting for up to 10­55% of all acute sports-related injuries (Ekstrand et al. It is well known that recurrent injuries lead to longer absences from competition than the average injury (Mueller-Wohlfahrt et al. Different modifiable risk factors to prevent injury recurrence have been recommended, including avoidance of the disproportionate development of a fibrotic scar during muscle healing (Opar et al. The regeneration of the injured myofibers and the formation of a connective tissue scar between the stumps, are processes that simultaneously compete and co-work (Järvinen et al. As therapists, we need to appreciate the factors that may influence these parallel processes. Research suggests that the mechanical environment during muscle healing is a key feature. For instance, it is known that persistent scarring may increase the overall mechanical stiffness of the myofibrous tissue it replaces. It may also hinder potential muscle regeneration and, ultimately, lead to an incomplete functional recovery that includes changes in muscle tissue lengthening mechanisms, and in eccentric strength (Silder et al. In sports medicine, diagnostic and therapeutic processes need to be optimized in order to minimize absences from sport, and to reduce high injury recurrence rates. To achieve this, it is necessary for modifiable risk factors to be recognized and analyzed, including, but not limited to , insufficient warm-up, muscle fatigue, muscle strength imbalance, neuromuscular inhibition, poor motor control of the pelvic and trunk muscles, limited flexibility, or premature return to active sport (Freckleton et al. However, a new question arises: are we able to control this balance during the repair process This focuses particular attention on the benefits of early mechanical loading, set in the improved alignment of regenerating myotubes. It also pays attention to faster regeneration, as well as to atrophy minimization of surrounding myotubes (Khan & Scott 2009). Nevertheless, the high rate of recurrent injuries suggests that the prevailing understanding of potential risk factors related to muscle re-injury, and its detection, is not adequate. This article proposes a manual approach, based on the intentional alteration of the mechanical environment (manual matrix remodeling) in each of the three phases of muscle healing: degeneration and inflammation, muscle regeneration and fibrosis or remodeling. The authors of this chapter have developed a scar modeling technique that attempts to reverse the matrix state from high to low tension, a process that is decisive in the physiopathology and healing process of myofascial injuries, with controlled mechanical stimuli 337 Chapter 19 through the combined use of torsion, shear, traction, axial and compressive vectors on scar tissue. Normal muscle and muscular connective tissue relationships Muscular tissue has traditionally been studied by the conventional precepts of descriptive anatomy, at the expense of the study of the fascial tissues, considered from the beginnings of anatomical study as a surrounding tissue that lacks a relevant function. The advancement of scientific knowledge of this tissue in the last thirty years has enabled us to understand the relevance that the intra-, inter- and extramuscular connective tissue has in the mechanotransduction and transmission of forces to the skeleton through connective tissues linking the skeletal muscle to fascial structures and tendon. Thus, it is worth mentioning that chronic loading leads both to increased collagen turnover as well as, dependent on the type of collagen being considered, some degree of net collagen synthesis. These changes modify the mechanical properties and the viscoelastic characteristics of the muscular fascia, decreasing its stress susceptibility, and likely making it more load resistant (Kjaer 2004). Nevertheless, the enthusiasm that has been brought about by this emerging paradigm shift may be possibly leading us to make the same mistakes we made when putting stress on the study of the fascia by anatomically and functionally separating it from the muscular tissue. In sport medicine and functional anatomy, it is essential to understand the bidirectional interaction between these two tissues whose histologic compositions differ. In short, muscular tissue is closely bound to muscle fiber through several continuous connective bows. The mechanically competent links that transmit external forces to the muscle cell surface and underlying cytoskeleton, through integrins and dystrophin­glycoprotein complexes, derive from the interfascial trabecular system of muscular connective tissue (Järvinen et al. In addition, many of these linkages are to be found in the myofascial areas that hold the greatest mechanical tension. There are a large number of these close to the musculotendinous junctions, due to an intertwined architecture that provides them with a larger distribution area (Kääriäinen et al. Relevance of mechanical properties in mechanotransduction of skeletal muscle Curiously the majority of these focal adhesion complexes, skeletal muscle cell nuclei and satellite cells, are located in the most mechanosensitive areas, as the interactive interface between the basal lamina and the skeletal muscle sarcolemma (Kääriäinen et al. Thus, mechanical information is received by the nucleus in a more rapid and efficient way, thanks to its peripheral location in the areas subject to more fascial pretension. Interestingly, associations have been made between the growth of the muscle, increased protein synthesis, activation of satellite cells, and release of growth factors and mechanical signaling, related to physical activity and loading (Khan & Scott 2009). However, although skeletal muscle is able to generate external mechanical forces, their development Relevance of muscle­connective tissue interfaces in mechanotransduction of skeletal muscle Thanks to electron microscopy, and to selective digestion­maceration techniques, as well as to studying 338 Manual matrix remodeling in myofascial injuries: scar modeling technique and maintenance not only depends on contraction forces, but also on the relationship between musculoskeletal cell matrix and muscle cells. In other words, mechanical properties of connective tissue and fascial pretension condition and enhance the bidirectional signaling mentioned above. Myofascial injury repair Muscle regeneration and repair by connective tissue Regeneration implies the substitution of a damaged tissue by another one with histologic characteristics that are identical. Unfortunately, only bones, corneas, livers and fingertips can go through a total regeneration process. The muscle cell is long, multinucleated and amitotic with no ability to regenerate, per se. Satellite cells are essential for skeletal muscle regeneration since they are able to activate, divide and change into myoblasts and finally into myotubes, that regenerate the injured muscle by fusing with healthy muscle fibers (Järvinen et al. Nevertheless, unlike rodents and other small animals, the repair process result in humans often consists of an excessive proliferation of collagen and fibrous tissue deposition, with a variable amount of regenerated and functional fibers. The scar is of course indispensable to the creation of a scaffold and anchorage, that helps to keep the stumps together, and thus able to withstand any external forces applied to the muscle (Järvinen et al. Tissue responses to injury not only depend on chemical signaling, but also on the mechanical environment, since mechanical tension critically determines cell growth, differentiation, apoptosis, migration, and development (Katsumi et al. These last contribute to the reconstruction of injured tissue by secreting new extracellular matrices, and by exerting high contractile force (Hinz 2007, Lieber & Ward 2013). In other words, the rapid onset, and excessive proliferation and activation of fibroblasts in a mechanically rigid environment, might decisively lead the regenerative process towards an excessive concentration of connective tissue scarring in the gap between the ruptured muscle stumps and the nearby area. This distance might also be conditioned by fascial pretension states, and the elastic energy, stored Role of mechanical environment in repair process after muscle injury There are different factors that might decisively condition these concomitant processes. When a tissue is 339 Chapter 19 secondary to the high speed and high amplitude of the injury mechanism, in pre-stressed fascial tissues. Ultimately, fibrotic scar tissue appears also to be of considerable significance for muscle re-innervation. This is because muscle injuries damage the intramuscular nerve branches at the site of the injury and, subsequently, an interposed scar that is too dense or voluminous may limit the penetration of axon sprouts through a scar to form new neuromuscular junctions that optimize motor re-innervation. In essence, from a functional point of view, it is necessary to review the relevance not only of the structural changes happening during muscle healing, but also of the mechanical environment and viscoelastic properties of the scar and surrounding myofascial tissue during the repair process as well as during the follow-up after the return to physical activity. It implies the rupture and consecutive retraction of the myofibers as well as the formation of a hematoma in the gap between the ruptured muscle stumps. The damaged fibers, in turn, tend to necrotize at their ends, approximately between one and two millimeters inwardly towards the intact basal membrane. Additionally, the anti-inflammatory cell reaction, consisting on infiltrating blood derived from inflammatory cells (that eventually are transformed into macrophages), invades the injury site, setting up activities to reinstate tissue homeostasis. By phagocytosis, macrophages remove the necrotic myofibers and regulate the release of growth factors and cytokines. The biochemical signaling, together with growth factors contained by extracellular matrix, can trigger muscle regeneration and, at the same time, can activate myofibroblastic differentiation of fibroblasts and increase skeletal muscle fibrosis through the differentiation of myogenic cells into fibrotic cells in injured skeletal muscle (Li et al. In other words, these growth factors are not only strong myogenic activators but are also potential activators of connective tissue and myofibroblasts. After 24 hours, the satellite cells, a set of undifferentiated reserve cells, are activated and begin to proliferate. Manual approach in inflammation phase Release of the elastic energy stored Considering that the susceptibility for sustaining a muscle strain injury is greatest in high-force eccentric contractions from a lengthened position, an inadequate viscoelastic behavior of the myofascial tissue, that is essential to dissipate and absorb the kinetic energy in lengthening required during eccentric terminal movements, is usually related to 340 Manual matrix remodeling in myofascial injuries: scar modeling technique a higher risk of muscle strain injury (Schmitt et al. Thus, it is crucial to release the elastic energy stored in the mechanical environment of the injury and adjacent areas after the muscle strain injury. It should be taken into account that if perimysium are separated in the injured area, the retractile response produced is approximately 35% of the real length between the junctions and uninjured normal joint (Järvinen et al. The increased local pretension should be released to reduce the retraction of the myofibers as well as the gap between the stumps. This is intended to intentionally modify the transmission of joint-to-joint axial tension through the lateral unpacking of the fascial system in those areas where septa and intermuscular interfaces are present. This could considerably hold back the retractile diversionary action produced by the loss of continuity of the damaged myofascial tissue. To this end, it is important to open interfascial spaces, not only from a mechanical point of view, as mentioned above, but also with the purpose of draining the hematoma. To achieve this, it is recommended that the intermuscular septa between muscles should be treated. It is interesting to note that hematomas that move towards the surface, or the subdermal area associated with a visible ecchymosis in the skin, are a symptom of a good outcome. Thus, when the drainage is inadequate, the natural response of the fibroblast would consist of encapsulation of the hematoma. Some weeks later, this evolves into a fibrous scar tissue with mechanical properties that are very different from the myofibrous tissue it replaces, hindering, in the mid-term, potential muscle regeneration (Silder et al. During the acute phase, this traditional protocol may be enhanced with the approach cited above and with the possible use of specific and intelligent manual treatment to modify the mechanical environment. Images of a muscle injury (rupture of the fibro-adipose septa near the myotendinous junction of the medial gastrocnemius) over a 3-day evolution. Regeneration and fibrosis phase Muscle healing in regeneration phase After the acute phase, the repair and remodeling phase begins. It consists of two simultaneous processes related to the regeneration of the myofibers and reorganization of scar tissue. These satellite cells then separate into myoblasts that are later joined to create multinucleate myotubes. These myotubes use the former basal membrane, which is already injured, for scaffolding and anchorage, with the purpose of advancing progressively. It is worth enhancing the final conic aspect, like a tunneling machine, that new muscular fibers will acquire. The whole process is coordinated, not only through release of growth factors that activate satellite cells, but also through muscle cell­extracellular matrix interactions dependent on the mechanical properties of myofascial tissue (Järvinen et al. In other words, the rapid appearance of a dense and stiff scar, and the excess of fibroblast activity, might decisively tip the supportive and competitive muscular regeneration process towards an excess of proliferation of connective tissue scar. Muscle healing in fibrotic phase the regeneration phase happens at the same time as the fibrosis and remodeling phase. Due to this, matrices will increase their tension and stiffness in kilopascal (kPa) and the scar will become more resistant to tension; it is considered that, in a period of ten days, the scar should demonstrate sufficient tension to resist moderated traction stimulus. Likewise, the pres- ence of specific profibrotic growth factors increases in order to ease the transformation and proliferation from fibroblasts to myofibroblasts. These have an important function because, thanks to the contractile ability of their cytoskeleton, they are able to approximate and join, as far as possible, the edges of the wound. At this point, fibroblasts begin to fill the gap formed between the two ends of the injured muscle. This is the characteristic appearance of musculotendinous small unions in repairing processes. Fibers are linked through scarring tissue, whose mechanical properties differ from those of the muscular fiber. Similarly, the volume of the interposed scar might limit the penetration of intramuscular nerves, as well as of new blood vessels. The abjunctional stumps may remain denervated when the sprouts are unable to pass through it (Järvinen et al. The prosperity in the meeting of myotubes determines the success of the repair process. Thus, in a clinical setting, we often see that the excessive stimulation of fibroblasts through intense programs based on too eager and intensive application of mechanical loads will modify this balance towards scars, where the presence of fibrosis mechanically restrains the meeting of the newly created myotubes, so limiting regeneration. The authors of this chapter have developed a technique that attempts to reverse the matrix state from high to low tension, with controlled mechanical stimuli through the combined use of torsion, shear, traction, axial and compressive vectors on scar tissue. All this is done in order to produce a continuing tension against a barrier until a release of tension is perceived (Pilat 2003). This re-harmonization acts to normalize cell function and provide medium-term remodeling of the extracellular matrix (Martínez Rodríguez & Galán del Rio 2013). This involves an initial vector compression, delivered by the second, third and fourth fingers of one hand. The applied pressure should be enough to reach the level of the scar, where the first resistance is met. From this point, an axial and/or spiral/circular component is added to the initial vector compression until a further resistance barrier is reached. This way, a combination of elastic barriers will have been engaged by the fingers of the therapist. This combined compression and torsion is maintained for some time (30­90 seconds). This is followed by a progressive decrease of the initial tension as contact is maintained and as reorganization of tissues in the scar area occurs, leading to a spontaneous repositioning of the fingers as the barrier modifies. This process should be repeated as many times as needed (usually three to five) in order to finally notice a normalization of the initial feeling of tension. Summary of proposed mechanisms Inflammation phase: manual matrix remodeling Release the elastic energy stored to reduce the retraction of the myofibers as well as the gap between the stumps via manual treatment over intermuscular septa. Repair phase: manual matrix remodeling (scar modeling technique) Manually lead the collagen denaturalization in the area through controlled thixotropic reaction.

Major apothecary system units include minims diabetes and erectile dysfunction causes 400 mg levitra plus purchase amex, drams (fluidrams) erectile dysfunction and viagra use whats up with college-age males purchase levitra plus discount, ounces (fluid ounces) erectile dysfunction treatment non prescription purchase levitra plus 400 mg with mastercard, pints erectile dysfunction red 7 discount levitra plus 400 mg, quarts coke causes erectile dysfunction order levitra plus on line, gallons, grains, drams, pounds Objective 4: Identify major household system units. Major household system units include drops, teaspoons, tablespoons, ounces (fluid), cups, pints, quarts, gallons Objective 5: Convert units of measure to equivalent units of measure within the same system of measurement. Celsius-used in most parts of the world besides the United States; abbreviation for Celsius is C; water freezes at 0°C; water boils at 100°C Fahrenheit-used in the United States; abbreviation for Fahrenheit is F; water freezes at 32°F; water boils at 212 F; F = 1. In the 12-hour clock, the times of day are expressed as either between midnight and noon (as a. In the 24-hour clock, the times of day are expressed uniquely, with hours and minutes being written as follows: 3:33 a. Therefore, a unique number (01 through 24) is used to express the 24 hours of the day. Milliequivalents and units are measurements used to indicate the strength of certain drugs. Milliequivalent measures are defined as expressions of the number of grams of equivalent weight of a drug contained in 1 mL of a normal solution. Electrolytes, such as sodium and potassium, are usually measured in milliequivalents. Other drugs ordered in milliequivalents include potassium chloride, sodium bicarbonate, and sodium chloride. Units mainly measure the potency of heparin, insulin, penicillin, and some vitamins. A unit is the amount of a medication required to produce a specific effect, and the size of a unit varies for each drug. Vitamins are measured in standardized units (per international agreement) called International Units. International Units do not measure a medication in terms of its physical weight or volume. Objective 9: Determine the equivalents in the apothecary and household systems for the following amounts: 1 mL, 1 mg, 1 g, and 1 kg. Convert physician orders of heparin to the volume of solution that contains the amount of heparin ordered. Calculate whether the amount of a prescribed pediatric dosage is the safe or appropriate amount for a particular patient. Adult and Pediatric Dosage Calculations Chapter Objectives After completing this chapter, you should be able to: 1. Serious harm to patients may result from a mathematical error during a calculation and the subsequent administration of a drug dosage. It is the responsibility of those administering drugs to carry out medical orders precisely and efficiently. Dosage ordered-The total amount of ordered drug, along with the frequency it is to be administered. If the dose on hand is 100 mg per capsule and the dosage unit is one capsule, the dosage strength is 100 mg/capsule. Dosage unit-The volume of medication that contains a quantity of drug as listed on the drug label. General Dosage Calculations the dose of a drug is the amount a patient takes for the intended therapeutic effect, and the dosage regimen is the schedule of dosing for a drug. Many factors contribute to determining the dose and dosage regimen, including the potency of the drug and route of administration as well as such patient factors as weight, disease state, and tolerance. A loading dose may be required for some drugs to produce an adequate blood level that yields the desired therapeutic effect; this dose would then be followed by smaller maintenance doses to maintain an adequate blood level. A prophylactic dose of a drug may be given to prevent a disease, but a therapeutic dose, which is usually higher than the prophylactic dose, is given to treat an ongoing disease. The doses for many drugs, such as antihypertensives, are general and usually not patient-specific. For solid-dosage forms, the correct dose is easily administered in premeasured tablets or capsules. However, if the drug is a liquid, the dose is usually a volume that must be accurately measured by using a standardized 5-mL teaspoon, calibrated dropper (a dropper that is marked with graduated measurements), or syringe. If the pharmacist compounds a specific product for a patient, it is also his or her responsibility to ensure that the correct amount of drug is delivered in each dose. After this is done, the problem can be set up by using this formula: D * Q = X H the answer is most commonly signified by the letter X. Q represents the number of tablets, capsules, milliliters, minims, and so forth, that contains the available dosage. X represents the number of tablets, capsules, milliliters, minims, and so on, of the desired dose (the amount to be administered). Make certain that all the terms in the formula are labeled with the correct units of measure. One formula uses ratios: Dose on hand (H) Desired dose (D) = Quantity on hand (Q) Quantity desired (X) Example 1 Amoxil 500 mg is ordered. To calculate the dosage, use this formula: 500 mg (D) 250 mg (H) = 5 mL (Q) X Then, cross-multiply: 250 X = 5 mL * 500 mg X = 5 * 500 250 Amount to administer-The volume of a medication that contains the desired dose; the number of tablets (or milliliters of a solution) administered once to provide the desired amount of a drug. You can also use the formula above to calculate dosages: Amount to administer (X) = Desired dose (D) Dose on hand (H) Example 2 Heparin, an anticoagulant, is often distributed in vials in prepared dilutions (less concentrated mixtures) of 10,000 units/mL. If the order calls for 2,500 units, you can use the previous formula to calculate: 2,5000 units * 1 10,000 units/mL X = 0. The total amount of ordered drug, along with the frequency it is to be administered 6. Certain tablets are specially designed to be administered sublingually (under the tongue) or buccally (between the cheek and gum). Some tablets are chewable; others dissolve in water to make a liquid that the patient can drink. Capsules are usually ovalshaped gelatin shells that contain medication in powder or granule form. This allows increased duration of drug action and therefore the patient does not have to take as many doses of the drug. Use the formula: D * 5 mg * Q = X H Solid Doses Tablets may be broken into parts only if they are scored (notched), and they must be broken only along the line of the scoring. Before administering medication to a patient, you need to determine how many tablets or capsules will deliver the desired dose. If necessary, convert the dosage ordered to the desired dose by using the same unit of measurement as the dose on hand. Then, you can calculate the amount to administer by using the fraction proportion method. Dose on hand (H) Desired dose (D) = Dosag e unit (Q) Amount to administer or Desired dose (D) * Dosag e unit (Q) Dose on hand (H) 1 = X 2. The units of the dosage ordered and the dose on hand are the same, so no conversion is needed. Liquid drugs can be administered systemically by mouth or by injection throughout the body. The measuring cup-calibrated in fluid ounces, fluidrams, cubic centimeters, milliliters, teaspoons, or tablespoons 2. The medicine dropper or oral syringe-medicine droppers are calibrated in milliliters, minims, or drops, whereas oral syringes are usually calibrated in cubic centimeters 3. The calibrated spoon-usually calibrated in teaspoons and cubic centimeters To calculate oral liquid doses, this formula can be used: D * H = X Q Example 1 the physician orders 400 mg of the antibiotic cefdinir (Omnicef). Therefore, 5 mL 125 mg 400 * 5 2,000 = = 16 mL 125 125 Example 2 the pediatrician orders erythromycin 375 mg. When mixed as directed, each teaspoonful (5 mL) contains: Erythromycin ethylsuccinate equivalent to erythromycin. Chapter teN Adult and Pediatric Dosage Calculations 135 Focus on Pediatrics Administering Medicine to Young Children D osage cups are convenient for children who know how to drink from a cup without spilling, but for children who cannot drink from a cup, the following options are available: Syringes are convenient for infants who cannot drink from a cup. Droppers are safe and easy to use with pediatric patients but must be measured at eye level and administered quickly to avoid losing any of the medication. Cylindrical dosing spoons have long handles that can be held easily by small children, with small cups that fit easily into their mouths. Focus on Geriatrics New Medication-Dispensing Systems Help Elderly Patients dvances in communication and artificial intelligence are examples of the ways that medicationdispensing systems are improving care for elderly patients. Some systems help to manage home administration of complex, multiple-drug regimens by offering "smart" bottles arranged on a tray that alert the patient when it is time to take a medication. The bottles release the correct amount of medication doses and offer a self-locking feature to prevent accidental overdose. A complete record of all medications dispensed is retained by the system for future reference. Such injectable medications are prescribed in grams, milligrams, micrograms, grains, or units. The injectable drugs can be prepared in packages as solvents (diluents or solutions) or in powdered form. Drug solutions for injection are commercially premixed and stored in vials and ampules for immediate use. Subcutaneous Injection Drugs injected into the subcutaneous tissue are absorbed slowly because there are fewer blood vessels in fatty tissue. The two types of syringes used for subcutaneous injections are the tuberculin syringe (1 mL), calibrated in 0. The common syringe that is used for intradermal testing is the tuberculin syringe with a 25-gauge needle. It is important to always use insulin syringes to administer insulin and no other types of syringes. Patients who have insulin-dependent diabetes often need regular injections of insulin to keep their blood glucose from rising to levels that could be life-threatening. These regular injections must be rotated to various sites of the body to prevent scarring of the tissue at a single injection site. Different forms of insulin are available, and insulin may be administered several ways depending on the form. Chapter teN Adult and Pediatric Dosage Calculations 139 Focus Point Preparing Insulin Injections or more accurate measurements, use a 30-unit insulin syringe for insulin doses less than 30 units and a 50-unit insulin syringe for insulin doses less than 50 units if a standard 100-unit syringe is not available. To successfully remove insulin from a vial for injection, first draw up the same quantity of air as the ordered insulin volume before withdrawing the appropriate insulin quantity. If the physician orders two types of insulin to be administered, they may be combined in one syringe to allow for one injection. The smallest-size syringe that will contain the number of units required is best because it is easier to see the unit markings on the syringe. You can see that the top ring of the plunger is even with three lines above the number 25. If insulin concentration is not 100 units/mL, apply bold warning labels to alert the user about the concentration. Prescribers should order insulin cartridges for outpatients to help ensure correct dispensing. Example 1 Ordered: heparin 5,000 units subcutaneously q8h On hand: heparin is available as 10,000 units/mL You need to convert units to milliliters. Therefore, the additive amount is calculated in terms of volume-usually in milliliters. The amount of drug in a parenteral solution is clearly stated on the label, but the pharmacist must be careful to notice whether the amount is given in terms of concentration. The concentration is used to calculate the correct volume to be mixed with a parenteral diluent to produce the prescribed dose. Therefore, for more information, it is advisable to refer to a pharmaceutical calculations textbook. Example 2 Ordered: 1,000 mL of D5W containing 20,000 units of heparin, which is to be infused at 30 mL/h How much heparin should be given to the patient per hour If only half the indomethacin suspension was used, how many milliliters would be left Ordered: Heparin 5,000 units subcutaneously q8h On hand: Heparin 10,000 units/mL is available Administer: 4. Ordered: Lidocaine 25 mg subcutaneously On hand: Lidocaine 5% solution Administer: 6. Dosages for infants and children are usually less than the adult dosages for the same medication. The body mass in children is smaller, and their metabolism is different from that of adults. Therefore, dosage calculations for pediatric patients (infants or children) must be precise. These formulas are based on the weight of the child in pounds or on the age of the child in months, and they aid in determining how much medication should be prescribed for a particular child. Today, the most accurate methods of determining an appropriate pediatric dose are by weight and body area. You must know whether the amount of a prescribed pediatric dosage is the safe or appropriate amount for a particular patient. Chapter teN Adult and Pediatric Dosage Calculations 143 Focus Point Questions to Ask When a Child Is Prescribed Medication E ncourage parents or caregivers of children to ask their physician the following questions: What is the drug, and what is it used for What side effects does it have, and what should I do if my child has any of these side effects For Children of Normal Height for Weight 90 80 70 240 90 220 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 30 28 26 24 22 50 20 19 18 17 16 15 14 13 30 12 2 85 80 75 70 0.

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Syndromes

• Diarrhea, worse on high-fat diet
• Difficulty using the legs or feet
• Mood changes such as sudden anger, unexplainable fear, panic, joy, or laughter
• Exploratory surgery
• Adrenal medullary imaging
• Low blood pressure
• Other (be specific)?
• EEG (brain wave testing)
• Portal vein obstruction (liver)

Hyperextension of the carpus can lead to not only transverse body fractures but also fractures due to distal pressure of the third metacarpal or a direct blow occurs as well drugs for erectile dysfunction pills order levitra plus with american express. During a forced hyperextension erectile dysfunction 34 year old male cheap levitra plus 400 mg with visa, the capitate may strike against the dorsal edge of the radius crestor causes erectile dysfunction purchase levitra plus with visa, and further bending forces may then result in a transverse fracture with separation of the proximal pole erectile dysfunction suction pump discount levitra plus. The distal fragment of the capitate dislocates posteriorly and during retraction to palmar impotence pump order genuine levitra plus on line, it can rotate the broken proximal capitate pole 180 degrees. They usually show pain and swelling and inability of motion or restricted range of motion of the wrist. In nondisplaced fractures, sometimes mild pain in the center of the wrist is the only clinical finding. An urgent indication for surgery is the dislocated transverse proximal pole fracture, because it can end up in an avascular necrosis of the proximal capitate pole. Disadvantage of the K-wires is that they have to be removed, but the cost of the implant is lower. In greater arc injuries, closed reduction and arthroscopically assisted percutaneous screw fixation is another option. The hook of hamate is relatively prominent to the palmar side of the hand and is at risk when falling on the outstretched hand. Athletes who swing a racket, club, or bat (tennis, golf, baseball) have a greater risk of hook of hamate fracture. The fractures of the hook of hamate are subdivided into fractures of the of the tip, the waist, and the base of the hook. Furthermore, there are fractures of the proximal pole, medial tuberosity, and sagittal oblique fractures. A dislocation of this pole leads to minor blood supply or nonperfusion of the fractured pole similarly as in scaphoid fractures. So, in these cases, risk of nonunion is higher and should be checked by X-ray examination during follow-up. Since the flexor tendons use the hook of hamate as a pulley, forceful finger flexion against resistance in an ulnar deviated wrist position usually increases pain. The clinical findings show in series of Kadar et al,15 a higher sensitivity than the carpal tunnel view X-ray. In comparison to the other carpal fractures, this seems to me to be a relatively minor amount. The motor branch of the ulnar nerve and the concomitant deep branch of the ulnar artery are in very close vicinity of the base of the hook and the palmar surface of the body of the hamate. So, both can be at risk if the hamate is injured or the whole hook is excised as well. The group with nonoperative treatment developed a nonunion in 24%, while in the operative group no nonunions occured. The hook acts as a pulley at the ulnar border of the carpal tunnel that directs the flexor tendons of fifth and fourth finger from the palm to the forearm, especially in ulnar inclination of the wrist. With the advanced image technique, it is possible today to make the diagnosis in due time and perform primary stabilization of these fractures, which is not a very difficult operation. Via a carpal tunnel incision, the tip of the hook of hamate at the border of the carpal tunnel can be easily accessible and through carpal tunnel, the reduction of the base of the hook can be easily controlled. Thanks to cannulated headless screw technique, also internal fixation is uncomplicated. In displaced fractures, only of the tip of the hook, I also prefer nonoperative treatment, because later excision of the tip of the hamate, if necessary, has no biomechanical influence to the power grip. In displaced body fractures, I use an open dorsal approach with opening of the distal fifth extensor compartment. In displaced fractures of the hamate, I tend to open reduction and internal fixation with the cannulated Herbert screw if the base is involved. Hook of the hamate fractures in competitive golfers: results of treatment by excision of the fractured hook of the hamate. Some authors recommend the excision of the hook of hamate in any case independent from the location of the fracture, that means, even if the fracture is located at the base as well and report about good results. Displaced fractures of the hook have shown in different case series good clinical results even if there is a remarkable number of nonunions after nonoperative treatment. Assessment: Cardinal Signs and Symptoms In addition to the general characteristics outlined previously, the location of the pain provides an important clue to the possible etiology of the pain. The pain has been slowly becoming worse over the past two weeks, which is consistent with pelvic inflammatory disease. Additional information that suggests this client is experiencing pelvic inflammatory disease includes pain with intercourse (dyspareunia) and a green discharge. Although a fever can be associated with other health problems, the combination of a fever with diffuse abdominal pain, pain with intercourse, and a green vaginal discharge all support the diagnosis of pelvic inflammatory disease. Most commonly, it is caused by overeating and/ or the formation of "gas" secondary to inadequate digestive processes. My belly is just getting bigger and bigger and nothing I am doing seems to be helping. Physical exam findings positive for hyperactive bowel sounds and diffuse abdominal tenderness. Any numbness or tingling or other symptoms characteristic of compartment syndrome What medications have you taken for systemic disease or previous ankle injury or disability Assessment: Cardinal Signs and Symptoms Does the patient need surgery to repair area By using a grade scale the provider can determine the degree of injury and subsequent treatment. Although rating the injury as a 3 on a pain rating scale of 0 to 10, the patient is able to bear weight, which indicates the absence of a fracture. Even though the patient sustained the injury when walking, this type of injury is associated with sports. The anterior talofibular ligament is the weakest part of the ankle and the most likely area affected by trauma. Treatment should be symptomatic to include rest, support with walking, mild over-the-counter analgesics as required, and progressive ambulation. Should symptoms persist or worsen, the patient is advised to return for further investigation to include x-rays and possible immobilization. It is more common in women than men and its symptoms are often mistaken for a psychiatric illness. Patients generally experience heart palpitations, diaphoresis, heat intolerance, anxiety, and tachycardia. Patient felt these were reasonable changes and follow-up was set for 1 month later. Follow-up: At the 1-month follow-up the patient reported improvement of symptoms and only occasional anxiety related to work. Patient was counseled to return if symptoms recurred or if he began to feel overwhelmed or depressed. Forty-five percent of all cases are attributable to infection (25%) and kidney stones (20%) Urinary tract infections: invasion of bacteria via the urethra into the bladder Urge to urinate, pain with urination, burning with urination Foul smelling urine Kidney infections: bacteria reach the kidneys via the ureters or via the bloodstream. Have you seen any "sand-like," granular material in the commode after you urinated Additional testing may be recommended to include urine for cytology to rule out an infectious cause, intravenous pyelogram to rule out kidney stones after an abdominal flat plate, and additional laboratory tests to evaluate for an acute kidney injury. The urologist will proceed to determine which diagnostic testing is most appropriate. Have there been any changes since initially finding the lump either in its size, or in pain, skin changes, nipple discharge, change with menstrual cycle The breasts should then be examined with the patient in the supine position, with the arm on the side you are examining above her head. For a woman with large breasts, it may be helpful for her to roll onto the contralateral hip so that you can better palpate the upper and lower lateral quadrants of the breast you are examining and then complete the examination with her on her back. The entire breast should be examined using a systematic approach: either using small concentric circles with varying degrees of pressure (light, medium, and deep) or the up and down approach also known as the "lawnmower" method. It is important to cover all breast tissue, imagining a rectangle rather than a circle. Assess for consistency of tissue, presence of tenderness, nodularity, dominant masses, and borders of the mass. Size should be measured in centimeters, the clock position of the mass should be recorded, and the number of centimeters from the areola should be measured. Three recent advances in mammography include digital mammography, computer-aided detection, and breast tomosynthesis. She has never had a positive-screening mammogram, nor does she have a history of breast biopsies or surgeries. She has a family history of a maternal grandmother with breast cancer diagnosed in her 70s. She is worried and concerned as a coworker was recently diagnosed with breast cancer. Diagnosis: Pending mammogram results Depending upon the results of the mammogram the patient may need a diagnostic mammogram and ultrasound followed by a biopsy. In women under 30 years of age, further diagnostic testing includes a unilateral breast ultrasound and in women over 30 years of age, it includes a diagnostic mammogram and ultrasound. It should never be assumed by the clinician that a diagnosis can be made based on the history and physical examination alone. In young women, it may be advisable to observe the breast lump over a menstrual cycle to see if there are changes, especially if tenderness is a symptom and the lump is found during the luteal phase of the menstrual cycle. A negative clinical examination is not conclusive of a negative diagnosis of cancer even in light of a negative mammogram and ultrasound. All palpable lumps with negative imaging should be referred to a breast surgeon for final diagnosis and management. However, chest pain is a common complaint and may also be caused by non-life-threatening problems, such as arthritis, acid reflux, or panic disorder. Assessment: Cardinal Signs and Symptoms the following signs and symptoms are highly associated with some types of chest pain. Listen for adventitious sounds, such as crackles (rales), rhonchi, or friction rubs Percuss the chest to identify dullness indicating pleural effusion or pneumonia Perform E to A testing. If there is dullness to percussion, this indicates fluid rather than air in the lungs Abdomen Observe the abdominal aorta for abnormally wide or prominent pulsations Listen to the abdomen for bowel tones and bruits Percuss the abdomen to identify areas of tympany, dullness, or tenderness Palpate the abdomen to identify areas of tenderness, organomegaly, or masses Vascular/Extremities Observe lower extremities for edema; check capillary refill and distal pulses Skin Observe for pallor or cyanosis Check nails for clubbing or cyanosis of nail bed Neurologic Describe mental status Is the patient alert and oriented or confused and somnolent Do you ever have to stop what you are doing due to chest pain, pressure, nausea, or heartburn Her pertinent negatives are the absence of exertional chest pain, dyspnea, and lower extremity edema. She started taking a new medication, Procardia, which can cause relaxation of the lower esophageal sphincter, leading to acid reflux and esophageal spasm. Her differential diagnosis includes atypical chest pain, cardiac ischemia, or gastric acid reflux. The advanced practice provider provides teaching about the need to avoid foods with a high-fat content and that are spicy. She was found five blocks from her house wandering around not knowing where she was. In addition, the glycohemoglobin (see the following) may now be used to diagnose diabetes. Also, Europeans tend to use a 2-hour after eating definition of diabetes rather than a fasting glucose. Using the European standards tends to increase the number of people who are classified as having diabetes. We continue to see a tremendous amount of confusion among doctors, nurses, laboratory technicians, and patients on which test is which. In particular, the "total T3", "free T3," and "T3 uptake tests" are very confusing, and are not the same test. The total T4 consists of two Portions: T4, which is bound to carrier proteins and is inactive, and "free" or unbound T4 that is available to cells and therefore active. This can occur when estrogen levels are higher from pregnancy, birth control pills, or estrogen replacement therapy. This is usually not ordered as a screening test, but rather when thyroid disease is being evaluated. This test measures only the portion of thyroid hormone T3 that is "free," that is, not bound to carrier proteins. First, this is not a specific thyroid test, but a test on the proteins that carry thyroid hormone around in your bloodstream. While this test is less commonly ordered, it is still of use in special situations, such as pregnancy. This protein hormone is secreted by the pituitary gland and regulates the thyroid gland. A high level suggests your thyroid is underactive, and a low level suggests your thyroid is overactive. Anemia can be due to nutritional deficiencies, blood loss, destruction of blood cells internally, or failure to produce blood in the bone marrow. This is the number of cells that plug up holes in your blood vessels and prevent bleeding. High values can occur with bleeding, cigarette smoking or excess production by the bone marrow. Low platelets also can occur from clumping of the platelets in a lavender colored tube.

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