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Hepatitis E
Hepatitis E samer kareem 2,189 Views • 2 years ago

The hepatitis E virus, responsible for major epidemics of viral hepatitis in subtropical and tropical countries, was cloned only 7 years ago.1 Hepatitis E was found to belong to the family of Caliciviridae, which includes the Norwalk virus—a common cause of gastroenteritis in humans—and consists of a single, plus-strand RNA genome of approximately 7.2 kb without an envelope (Fig. 1). The virus contains at least three open reading frames encoding viral proteins against which antibodies are made on exposure. These antibodies, especially those against the capsid protein derived from the second open reading frame2 and a protein of unknown function derived from the third open reading frame, are detected by currently available serologic assays. Retrospective studies on stored sera of past epidemics of viral hepatitis in Mexico, Africa, Afghanistan, Pakistan, India, Bangladesh, Burma, Nepal, and Borneo have revealed that all were caused by strains of hepatitis E. In addition, hepatitis E was found to be responsible for the hepatitis epidemic in the southern part of Xinjiang, China, in which 120,000 persons became infected between September 1986 and April 1988.3 Hepatitis E predominantly affects young adults (15 to 40 years old). The symptoms of hepatitis E are similar to those of hepatitis A. Frequently, a prodrome consisting of anorexia, nausea, low-grade fever, and right upper abdominal pain is present 3 to 7 days before jaundice develops. Aminotransferase levels peak (usually between 1,000 and 2,000 U/L) near the onset of symptoms; bilirubin levels (10 to 20 mg/dL) peak later. Jaundice usually resolves after 1 to 2 weeks. In about 10% of cases, the disease is fulminant—especially in pregnant women, among whom mortality rates as high as 20% due to hemorrhagic and thrombotic complications have been reported. No evidence has suggested that hepatitis E can cause chronic infection. Transmission is by the fecal-oral route, predominantly through fecally contaminated drinking water supplies. In addition, however, preliminary reports have suggested transmission of the hepatitis E virus through blood transfusions. Volunteer studies confirmed the presence of the virus in serum and feces before and during clinical disease.4 The virus is shed into feces approximately 1 week before symptoms develop. The incubation period varies from 2 to 9 weeks (mean duration, approximately 45 days). Until now, a few reports had described symptomatic hepatitis E acquired in Europe;5, 6 all patients with symptomatic hepatitis E in the United States were travelers returning from Mexico, Africa, or the Far East, in whom hepatitis E developed after their return home.7 In this issue of the Mayo Clinic Proceedings (pages 1133 to 1136), Kwo and associates describe a case of hepatitis E in a man who had not left the United States during the previous 10 years. Specific serologic tests for hepatitis E virus IgG (enzyme immunoassays and a fluorescent antibody blocking assay) and IgM8 (US strain-specific enzyme-linked immunosorbent assay with use of synthetic polypeptides deduced from the viral genome, as shown in Figure 1), developed at Abbott Laboratories (IgG and IgM) as well as at the Centers for Disease Control and Prevention (IgG), were used to prove that the patient indeed had acute hepatitis E. Researchers at Abbott Laboratories have prepared a report that describes most of the viral genome in this patient (Fig. I).8 Their results are interesting because this strain from the United States differs considerably from hepatitis E strains isolated in Mexico, Burma, Pakistan, or China. Furthermore, the sequence of the US strain is highly homologous (98% and 94% homology at the amino acid level to the second and third open reading frames, respectively) to a recently isolated hepatitis E strain from American swine.9 This finding suggests that, in the United States, hepatitis E is a zoonosis with the swine population as one of its hosts. This relationship would confirm earlier studies in Asia, where swine were also found to carry variants of the hepatitis E virus.10 Why are these two recent discoveries important for medicine in the United States? First, other sporadic, locally acquired cases of acute hepatitis may be caused by hepatitis E. Second, these back-to-back discoveries strongly suggest that a common natural host for hepatitis E is present in countries with more moderate climates. Because swine do not seem to experience any symptoms associated with infection and because symptoms in humans can be minor or absent, we now may also have an explanation for the 1 to 2% of positive hepatitis E serologic results in blood donors in the United States,11 Netherlands,12 and Italy,6 countries with large swine staples. Clearly, more research needs to be done to confirm this hypothesis. Third, in countries with more moderate climates, hepatitis E may often result in a subclinical infection. Is this variation in manifestation due to less virulent strains, and do sequence variations determine virulence? Fourth, swine may be used as an animal model for study of the disease as well as vaccine development.

Female Genital Mutilation FGM in Rural Egypt - ختان الاناث في مصر
Female Genital Mutilation FGM in Rural Egypt - ختان الاناث في مصر Doctor 38,426 Views • 2 years ago

A report of Female Genital Mutilationn FGM (female circucision) in Menya In Egypt تقرير من مدينة المنيا في صعيد مصر عن ختان لاناث

exam
exam timmac7 12,783 Views • 2 years ago

exam

Male Urogenital Examination
Male Urogenital Examination Scott George 59,794 Views • 2 years ago

Basic well-male examination of the genitals and digital rectal exam.

Pancreatic Cancer
Pancreatic Cancer samer kareem 1,356 Views • 2 years ago

This video: Pancreatic cancer begins in the tissues of your pancreas — an organ in your abdomen that lies horizontally behind the lower part of your stomach. Your pancreas secretes enzymes that aid digestion and hormones that help regulate the metabolism of sugars. Pancreatic cancer often has a poor prognosis, even when diagnosed early. Pancreatic cancer typically spreads rapidly and is seldom detected in its early stages, which is a major reason why it's a leading cause of cancer death. Signs and symptoms may not appear until pancreatic cancer is quite advanced and complete surgical removal isn't possible.

Horizontal Mattress Suture
Horizontal Mattress Suture Mohamed Ibrahim 14,451 Views • 2 years ago

Horizontal Mattress Suture

Coronary Stent Animation
Coronary Stent Animation M_Nabil 22,872 Views • 2 years ago

This video depicts how a stent is placed in the coronary artieries. We first place a guiding wire in the heart artery through a catheter, usually from the groin. Then the stent is inflated by a balloon in the artery, which is then removed. The stent remains permanently. Blood thinners, aspirin and plavix, are both required after a stent is placed in your heart artery.

Pap smear test
Pap smear test samer kareem 33,396 Views • 2 years ago

In patients age ;::25, HPV DNA testing is the preferred next step in management if the initial cytology shows ASC-US. In this method, samples are collected for both cytology and reflex HPV DNA. If cytology results are positive, HPV DNA testing is performed. If cytology results are negative, the sample for HPV DNA is discarded. HPV DNA testing along with Pap smear at 3 years is recommended if initial cytology shows ASC-US but HPV DNA testing is negative

Time Management and Work Organization
Time Management and Work Organization Scott 6,581 Views • 2 years ago

Time Management and Work Organization

How To Deal With Anxiety, How To Not Be Depressed, Natural Remedies For Anxiety, Help For Depression
How To Deal With Anxiety, How To Not Be Depressed, Natural Remedies For Anxiety, Help For Depression marin vinasco 4,307 Views • 2 years ago

How To Deal With Anxiety, How To Not Be Depressed, Natural Remedies For Anxiety, Help For Depression---- http://depression-help.info-pro.co --- Treatments for Depression, Depression is a mental disorder which affects about 350 million people worldwide. Its symptoms include, but are not limited to; Feelings of helplessness and hopelessness. loss of interest in daily activities, appetite or weight changes, insomnia or oversleeping, anger or irritability, loss of energy. self-loathing, reckless behavior, concentration problems, unexplained aches and pains and also suicidal thoughts. Current popular treatments for depression include antidepressant medications and talk therapy such as counselling or psychotherapy. Unfortunately, these treatments have many drawbacks. AD medication is associated with a high risk of side effects and a low success rate, while therapy sessions are notoriously expensive. And often unaffordable or unobtainable for most people. Medical Treatments. Medication for depression comes in the form of antidepressants. There are typically 4 classes of AD medication, SSRIs (selective serotonin reuptake inhibitors), atypical antidepressants, tricyclics antidepressants and MAOIs (monoamine oxidase inhibitors). step-by-step guide on exactly what you need to do to naturally and safely cure your depression in just a few weeks - without any medication or expensive therapy sessions. For more information. click here. http://depression-help.info-pro.co

Psychological Erectile Dysfunction
Psychological Erectile Dysfunction samer kareem 1,725 Views • 2 years ago

Erectile dysfunction (ED) is the inability to get or keep an erection firm enough for sexual function. It’s a common sexual problem, affecting as many as 30 million men in the United States. Most cases of ED have a physical cause, such as heart disease, diabetes, and obesity. Lifestyle choices like smoking and drinking excessive amounts of alcohol can also lead to ED. But for some men, psychological issues are the root of the problem.

General Dentistry in 3D
General Dentistry in 3D Dentist 1,816 Views • 2 years ago

Amazing animation: General Dentistry in 3D

Male vs. Female Orgasms
Male vs. Female Orgasms Scott 41,225 Views • 2 years ago

Men and women have anatomical differences when it comes to genitals, but orgasms are fundamentally very similar. The female orgasm lasts longer than the male, ranging about 20 seconds compared to 3 to 10 seconds, but men do experience more orgasms.

Men Health - Difference Between White and Clear Sperm
Men Health - Difference Between White and Clear Sperm hooda 7,943 Views • 2 years ago

Watch that video to know the Difference Between White and Clear Sperm

Hematoma  Evacuation
Hematoma Evacuation samer kareem 17,461 Views • 2 years ago

A hematoma is a collection of blood outside of a blood vessel. There are several types of hematomas and they are often described based on their location. Examples of hematomas include subdural, spinal, under the finger or toenail bed (subungual), ear, and liver (hepatic). Some causes of hematomas are as pelvic bone fractures, fingernail injuries (subungual), bumps, passing blood clots, blood clot in the leg (DVT), blood cancers, and excessive alcohol use. Symptoms of hematomas depend upon their location and whether adjacent structures are affected by the inflammation and swelling associated with the bleeding and may include

K-Wire Fixation (Kirschner wire)
K-Wire Fixation (Kirschner wire) Scott Stevens 13,882 Views • 2 years ago

Kirschner wires or K-wires or pins are sterilized, sharpened, smooth stainless steel pins. Introduced in 1909 by Martin Kirschner, the wires are now widely used in orthopaedics and other types of medical and veterinary surgery. They come in different sizes and are used to hold bone fragments together (pin fixation) or to provide an anchor for skeletal traction. The pins are often driven into the bone through the skin (percutaneous pin fixation) using a power or hand drill. They also form part of the Ilizarov apparatus.

circumcision
circumcision united state 66,079 Views • 2 years ago

"The act of cutting off the prepuce or foreskin of males, or the internal labia of females." Webster's Revised Unabridged Dictionary (1913)

Symptoms of Kidney Dysfunction
Symptoms of Kidney Dysfunction samer kareem 1,515 Views • 2 years ago

symptoms of kidney dysfunction. I find kidney dysfunction in my patients very frequently. Lower back pain is a common indicator that the kidneys are starting to become irritated. Yes, lower back pain can come from many different areas, but one of the areas I always rule out is kidney congestion.

Examination of the Spleen
Examination of the Spleen samer kareem 15,492 Views • 2 years ago

Start in RLQ (so you don’t miss a giant spleen). Get your fingers set then ask patient to take a deep breath. Don’t dip your fingers or do anything but wait. When patient expires, take up new position. Note lowest point of spleen below costal margin, texture of splenic contour, and tenderness If spleen is not felt, repeat with pt lying on right side. Gravity may bring spleen within reach. “LET THE SPLEEN PALPATE YOUR FINGERS AND NOT THE OTHER WAY AROUND. THERE IS NO GOLD, SO DON’T DIG!”

Patellar Tendon Rupture
Patellar Tendon Rupture samer kareem 5,302 Views • 2 years ago

Patellar tendon rupture is a rupture of the tendon that connects the patella to the tibia. The superior portion of the patellar tendon attaches on the posterior portion of the patella, and the posterior portion of the patella tendon attaches to the tibial tubercle on the front of the tibia.

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