By T. Bradley. Marlboro College Graduate Center.
Six patients presented with shock quality levitra professional 20mg, functional damage can be seen on two-dimensional while one patient with a penetrated pericardium was echocardiography or other wall-motion studies (8 discount 20 mg levitra professional, 19) generic 20 mg levitra professional fast delivery. Beck’s triad (distended neck veins cheap levitra professional 20 mg, hypotension, Our university hospital is one of Sweden’s most and mufﬂed heart sounds) was found in two patients of active trauma centres and our results therefore reﬂect whom one had a normal echocardiogram. All patients who sustained chest injuries with cardiac All ﬁve patients with penetrating ventricular wounds © 2000 Scandinavian University Press. Pancreatic diagnosis may be overlooked (16) and delayed hae- cysts, pain in the chest, and psychological stress morrhage may occur from 2 days to 3 weeks after the reaction were found in one patient each. Beck’s triad (5) died during urgent thoracotomy because of pump (including distended neck veins, hypotension, and failure and blood loss. Two patients had echocardiograms, one cardiac trauma had an angiogram of the thoracic aorta, and one a Penetrating Blunt sonogram of the carotid arteries. Reasons for diagnosis of blunt myocardial Pneumothorax 1 0 injury in 4 patients Diaphragmatic injury 1 0 Pneumoperitoneum 1 0 Variable No. The neck veins in patients with shock from pericardial treatment of ventricular wounds in this study was by tamponade will not usually become distended until tamponading the defect with the surgeon’s ﬁnger while coexistent hypovolaemia is at least partly corrected. Cardiopulmonary bypass was Tension pneumothorax is a common cause of such not used in these cases, but is of great help when the distension in both penetrating and blunt chest trauma. We relied on the clinical picture Blunt cardiac injury (previously termed myocardial with some help from two-dimensional echocardiogra- contusion) is a nebulous term used to describe an injury phy to diagnose cardiac injuries. It is difﬁcult to one patient and it showed pericardial ﬂuid during diagnose with certainty and has been referred to as abdominal investigation. It should be suspected in negative result in our series, probably because intra- any case with severe trauma to the anterior chest. There was no pleural breach, which may positive) as conﬁrmatory adjuncts in the diagnosis of explain that the patient lived with the tamponade for myocardial contusion, and in separating it from skeletal two days before it was relieved. If there is evidence of and massive haemothorax shifting the mediastinum to cardiac dysfunction, aggressive investigation using the right. Like others (6), we consider pleural breach as transoesophageal echocardiography, which is accurate a risk factor for death in patients with penetrating and allows evaluation of the thoracic aorta, is helpful cardiac injuries. All patients with penetrating ventricular wounds In this study cardiac contusion was probably over- presented with cardiac tamponade, which was fatal in shadowed by the overt signs of associated skeletal, one patient. However, it may be fatal puck, kick, or baseball), and can result in sudden death because it interferes with venous return and diastolic as a consequence of cardiac arrhythmia. These deaths ﬁlling of the heart, impairs cardiac contractility and are probably caused by ventricular dysrhythmia in- reduces cardiac output. The time during which its duced by an abrupt, blunt, myocardial blow delivered protective effect becomes deleterious has yet to be at an electrically vulnerable phase of ventricular deﬁned. A point worthy of mention is that the Eur J Surg 166 Cardiac injuries 21 incidence and severity of associated injuries in blunt 11. Blunt impact to prehospital systems and modern technological ad- the chest leading to sudden death from cardiac arrest during sports activities. Stab wounds trauma centre (3) in which 60 cases were studied of the heart with delayed hemopericardium. Subxiphoid diagnosis with transesophageal echocardiography and pericardial window in patients with suspected traumatic management with high frequency jet ventilation: Case pericardial tamponade. Blunt traumatic rupture of the heart and pericardium: a ten Address for correspondence: year experience (1979–1989). The aim herein was to present our experience of such lethal injuries treated at Denmark’s busiest hospital. Keywords: Cardiac and aortic injuries; Urgent thoracotomy and sternotomy; Left heart bypass; Paraplegia; Mortality 1. Patients and methods The Egyptians were the ﬁrst to describe medicine in We found 19 patients with heart or thoracic aortic injuries; general and trauma to the heart and aorta in particular as one had both cardiac and aortic lesions. Cardiac injuries were shown in the Edwin Smith surgical Papyrus written by the found between May 1995 and June 2001, while aortic injuries Egyptian Imhotep more than 5000 years ago. There since that time has inspired many talented poets, writers and were 11 patients with cardiac injuries, of whom three were musicians not only in Egypt but all over the world. Oftheremainingeightpatients(meanage37years, with trauma to the heart often require immediate surgical range 16–63 years) four had penetrating injuries, and four had intervention, excellent surgical technique and well blunt injuries. Theremainingeightpatients(meanage50 thoracic aorta also requires a meticulous way of assessment years, range 31–69 years) were meticulously analyzed.
The acidophilic secretory material in the lumen of the gland is rich in fructose buy 20mg levitra professional fast delivery, thought to serve as an energy source for spermatozoa following ejaculation generic 20mg levitra professional overnight delivery. Also evident are the elongate tubules forming the parenchyma of the gland and the dense fibrous connective tissue capsule order 20 mg levitra professional amex. Compare its transitional epithelium with the epithelium lining the ducts and glands of the prostate cheap 20 mg levitra professional with amex, which can be cuboidal, columnar or pseudostratified. The tubulo-alveolar glands of the prostate are embedded in an abundant stroma of fibro-elastic connective tissue, which is interlaced with strands of smooth muscle. Fixation is much better in the H & E sections, and it should be studied for the structure of the lining epithelium of the glands. Examine the central penile urethra and the surrounding blood-filled vascular sinuses that comprise the erectile tissue of the corpus spongiosum. Note that the lining epithelium of the penile urethra has a stratified columnar or stratified cuboidal appearance. Study the erectile tissue surrounding the urethra and observe that the trabeculae between blood sinuses contain smooth muscle and connective tissue fibers. The connective tissue capsule surrounding the corpus spongiosum is not as thick as that surrounding the corpora cavernosa. At low power note the general division of the ovary into an outer cortex containing follicles in various stages of development and an inner medulla containing numerous blood vessels and dense fibrous connective tissue. Identify; Lining epithelium (classically called “germinal epithelium”) - a simple cuboidal covering the ovary, continuous with the mesothelium of the peritoneum. These are growing follicles Secondary (antral) follicles - 1 oocyte surrounded by granulosa cells among which fluid-filledo spaces are coalescing into a single space, or antrum. Outside the basal lamina of the granulosa layer, the theca has differentiated into a theca interna and a theca externa. Atresia is often first recognized in the granulosa cells as the nuclei become apoptotic and there is a loosening of the cells. Corpus luteum – Following ovulation follicular cells (both granulosa and luteal) fold into the empty follicle and undergo luteinization. Identify the two primary cellular components of the corpus luteum, the granulosa lutein and theca lutein cells. Notice the relationships of these two cell types to each other and to the vascularization of the developing corpus luteum. Granulosa lutein left, theca lutein right #64 Ovary, Corpus Luteum of Pregnancy Compare the development of this corpus luteum of pregnancy (probably from the first trimester) with that of the recently formed corpus luteum of slide #63. Note particularly the increase in thickness of the granulosa luteal layer as compared to the thin, peripheral zone of theca luteal cells. The extensive vacuolization of the granulosa luteal cells is due to the extraction of its abundant lipid droplets. This reflects the importance of the corpus luteum (particularly the granulosa lutein cells) as the primary ovarian source of the steroid hormone progesterone. Be certain that you understand the changes that occur within the follicle during follicular development. These folds decrease progressively from the ovarian (infundibular) end of the tube to the uterine (isthmus) portion. The uterine tubes are a common site of occlusion after pelvic inflammatory disease, resulting in sterility. It is important to understand the interrelationships among the pituitary, ovary, and uterus during different stages of the menstrual cycle. The proliferative stage follows menstruation and is characterized by the repair of the endometrium and the proliferation of relatively straight, tubular uterine glands. Note the rather dense, cellular appearance of the endometrial stroma (region between glands) at this stage. Left to right: spongy zone, stratum basale, myometrium What is the primary ovarian hormone stimulating the endometrium during this stage? There has been a considerable increase in glandular development, characterized by their convoluted and "saw- toothed" appearance in sections. The glands are Secretory endometrium 72 frequently distended by a lightly acidophilic secretion rich in glycogen and this serves as an important source of nutrients to the developing embryo prior to implantation. Note the coiled arterioles in the endometrium, and be certain that you understand the significance of the arterial supply to the endometrium.
Summary of findings and strength of evidence for effectiveness in 13 treatment comparisons: Key Question 1–adults and adolescents a Asthma Comparison Representation Nasal Symptoms Eye Symptoms Quality of Life Symptoms 1 levitra professional 20 mg. Entries indicate comparative efficacy conclusions supported by the evidence buy cheap levitra professional 20mg, or insufficient evidence to form a conclusion buy cheap levitra professional 20mg online. For the comparison of oral selective antihistamine to intranasal corticosteroid (row 3) purchase levitra professional 20mg with visa, evidence was insufficient to form conclusions of superiority or equivalence for nasal and eye symptoms. For all other outcomes, “Insufficient” indicates insufficient evidence for conclusions of superiority; equivalence was not assessed. For comparisons involving combination therapy (rows 9 through 13), the proportion of the drug class studied as monotherapy is the same as the proportion of that drug class studied in combination therapy. For example, in row 9, two of five oral selective antihistamines (40 percent) were studied as monotherapy, and the same two antihistamines were studied in combination therapy. Moderate strength evidence for comparable effectiveness of oral selective antihistamine and oral leukotriene receptor antagonist for nasal and eye symptoms and for improved quality of life at 2-4 weeks. Moderate strength evidence for the use of oral leukotriene receptor antagonist over oral selective antihistamine for reduced asthma rescue medication use at 2-4 weeks. Low strength evidence for the use of combination oral selective antihistamine plus intranasal corticosteroid over oral selective antihistamine monotherapy for improved quality of life at 2-4 weeks. Oral selective antihistamine versus oral decongestant: eye symptoms at 2 weeks o Original conclusion: Insufficient evidence to support the use of one treatment 103, 107 over the other based on two good quality trials (N=890) with low risk of bias and consistent but imprecise treatment effects favoring oral selective antihistamine. Because approximately half of patients would still be in 103 the trial with imprecise results, the body of evidence would remain imprecise. Intranasal corticosteroid versus nasal antihistamine: nasal congestion at 2 weeks o Original conclusion: High strength of evidence for comparable effectiveness 115-119, 121 (equivalence) of the treatments based on eight trials (N=2443) with low risk of bias and consistent and precise results. Because this trial represented 2 percent of patients reporting this outcome, its impact on the overall precision of the body of evidence was minimal, and the body of evidence would remain imprecise. Intranasal corticosteroid versus nasal cromolyn: rhinorrhea at 2 weeks o Original conclusion: Insufficient evidence to support the use of one treatment 122 over the other based on one poor quality trial (n=43) with high risk of bias and an imprecise treatment effect favoring intranasal corticosteroid. If this were considered a precise result, the strength of evidence would remain insufficient to support the use of one treatment over the other due to the high risk of bias and unknown consistency of the body of evidence. Because the majority of patients would still be in 90, 130 the trials with imprecise results, the body of evidence would remain imprecise. If this were considered a precise result, the strength of evidence to support the use of combination oral selective antihistamine plus oral decongestant over oral selective antihistamine monotherapy would be moderate. Responder Analysis To demonstrate clinically meaningful treatment effects, the preferred analysis is a responder analysis, in which the outcome of interest is the proportion of patients who reached a predefined minimum threshold of improvement. In meta-analyses of three trials that compared combination intranasal corticosteroid plus nasal antihistamine to both intranasal corticosteroid and nasal antihistamine monotherapy (total N=3150), responder analyses were 115 included. Resolution was defined as reduction in all individual nasal symptom scores to less than 1. For the comparison of combination therapy to nasal antihistamine monotherapy, a statistically significantly greater proportion of patients achieved both resolution (p<0. For the comparison of combination therapy to intranasal corticosteroid monotherapy, a statistically significantly greater proportion of patients achieved resolution with combination therapy (p=0. Because the published meta-analyses lacked details about the how the analyses were conducted, results could not be replicated. Therefore, these findings do not alter our conclusions of comparable effectiveness (equivalence) of these treatments for nasal symptom outcomes. For asthma, only the two comparisons of oral leukotriene receptor antagonist (montelukast), to oral selective antihistamine and to intranasal corticosteroid, included asthma outcomes. For each of these comparisons, equivalence also was concluded for nasal symptoms (see Table 73). We were limited in our ability to address differences in effectiveness between patients with mild symptoms and patients with moderate/severe symptoms. Those that included patients with mild severity did not 122, 128, 130 report results separately for these patients. Two of these were rated poor quality and 122 favored intranasal corticosteroid over nasal cromolyn and over oral leukotriene receptor 128 130 antagonist for nasal symptoms. The third (n=27) was a fair quality trial that favored combination oral selective antihistamine plus intranasal corticosteroid over oral selective antihistamine monotherapy for nasal symptoms. The evidence is insufficient to suggest that mild nasal symptoms respond differently than moderate/severe symptoms to the specific treatments compared.
Moreover cheap 20mg levitra professional visa, it may be effective as an adjunct to interferon-based combination therapy in patients with chronic hepatitis C who have failed prior hepatitis C therapy (Lim 2005) generic 20 mg levitra professional free shipping. Resistant isolates of influenza A are genetically stable and fully transmis- sible buy cheap levitra professional 20 mg on line, and the pathogenic potential is comparable to that of wild-type virus isolates discount levitra professional 20 mg mastercard. According to a study which assessed more than 7,000 influenza A virus samples obtained from 1994 to 2005, drug resistance against amantadine and rimantadine has increased worldwide from 0. Virus samples collected in 2004 from South Korea, Taiwan, Hong Kong, and China showed drug-resistance frequencies of 15 %, 23 %, 70 %, and 74 %, respectively. Some authors have suggested that the use of amantadine and rimantadine should be frankly discouraged (Jefferson 2006). Pharmacokinetics Amantadine is well absorbed orally and maximum drug concentrations (Cmax) are directly dose-related for doses of up to 200 mg/day. In healthy volunteers, peak concentra- tion were reached after 3 hours and the half-life was 17 hours (range: 10 to 25 hours). Amantadine is primarily excreted unchanged in the urine by glomerular filtration and tubular secretion. In individuals older than 60 years, the plasma clearance of amantadine is reduced and the plasma half-life and plasma concentrations are increased. The clearance is also reduced in patients with renal insufficiency: the elimination half-life increases two to three fold or greater when creatinine clearance is less than 40 ml/min and averages eight days in patients on chronic haemodialysis. As the excretion rate of amantadine increases rapidly when the urine is acidic, the administration of urine acidifying drugs may increase the elimination of the drug from the body. Toxicity Gastrointestinal symptoms – mainly nausea but also vomiting, diarrhoea, constipa- tion, and loss of appetite – are the major side effects. As the occurrence of adverse effects is dose-related, adverse events are particularly common in the eld- erly and those with impaired renal function. Side effects begin within two days of the start of the drug, and usually disappear rapidly after cessation of treatment. In a four-week prophylaxis trial, these symptoms occurred in up to 33 % of young individuals (Bryson 1980). In a direct comparison of the prophylactic use of amantadine and rimantadine, more patients receiving amantadine (13 % vs. Less frequently (1-5 %) reported adverse reactions are: depression, anxiety and ir- ritability, hallucinations, confusion, anorexia, dry mouth, constipation, ataxia, li- vedo reticularis, peripheral oedema, orthostatic hypotension, headache, somnolence, dream abnormality, agitation, dry nose, diarrhoea and fatigue (Symmetrel 2003). Drug overdose has therefore resulted in cardiac, respiratory, renal or central nerv- 190 Drug Profiles ous system toxicity. Efficacy In a Cochrane review of 15 placebo-controlled trials on the prophylactic effect of amantadine, amantadine prevented 61 % of influenza cases and 25 % of cases of influenza-like illness but had no effect on asymptomatic cases (Jefferson 2006). Resistance Point mutations in the M gene lead to amino acid changes in the transmembrane region of the M2 protein and may confer high-level resistance to amantadine. The use of amantadine for treatment has been associated with the rapid emergence of resistant viruses capable of transmission, compromising its potential as a prophylaxis as well its efficacy as a treatment (Fleming 2003). In an avian model, they were also genetically stable, showing no reversion to the wild-type after several passages in birds (Bean 1989). These results suggest that resistant mutants may have the po- tential to threaten the effective use of amantadine for the control of epidemic influ- enza. Drug Interactions Amantadine adds to the sedating effects of alcohol and other sedating drugs such as benzodiazepines, tricyclic antidepressants, dicyclomine, certain antihistamines, opi- ate agonists and certain antihypertensive medications. Co-administration of quinine or quinidine with amantadine has been shown to re- duce the renal clearance of amantadine by about 30 % (Gaudry 1993). Recommendations for Use Amantadine does not completely prevent the host immune response to influenza A infection (Sears 1987) – individuals who take the drug may still develop immune responses to the natural disease or vaccination and may be protected when exposed at a later date to antigenically related viruses. Treatment should be started as soon as possible, preferably within 24 to 48 hours after the onset of symptoms, and should be continued for 24 to 48 hours after the disappearance of clinical signs. Amantadine is also indicated for prophylaxis against the signs and symptoms of influenza A virus infection when early vaccination is not feasible or when the vac- cine is contraindicated or not available. Prophylactic dosing should be started in anticipation of an influenza A outbreak and before or after contact with individuals with influenza A virus respiratory tract illness. When prophylaxis is started with inactivated influenza A virus vaccine, it should be administered for 2 to 4 weeks after the vaccine has been given (i. When inactivated influenza A virus vaccine is un- available or contraindicated, amantadine should be administered for the duration of known influenza A infection in the community because of repeated and unknown exposure.
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