| VM | vasomotor; ventralis medialus; ventromedial; ventricular mass; ventriculometry; vestibular membrane;... |
|---|---|
| V-ONC | viral oncogene |
| VP | physiological volume; vapor pressure; variegate porphyria; vascular permeability; vasopressin; velop... |
| VPP | vacuolar proton pump; viral porcine pneumonia |
| VRI | viral respiratory infection; virtual reality imaging |
| vaccination, hepatitis b | Hepatits B (hep B) vaccine gives prolonged protection, but 3 shots over a half year are usually required. In the u.s., all infants receive hep b vaccine. Two vaccines (engerix-b, and recombivax-hb) are available in the us. The first dose of hep b vaccine is frequently given while the newborn is in the hospital or at the first doctor visit following birth. The second dose is given about 30 days after the initial dose. A booster dose is performed approximately six months later. Babies born to mothers testing positive for hep b receive, in addition, hbig (hep b immune globulin) for prompt protection. Older children (11-12 years) are advised to receive a hep b booster as are adults in high-risk situations including healthcare workers, dentists, intimate and household contacts of patients with chronic hep b infection, male homosexuals, individuals with multiple sexual partners, dialysis patients, iv drug users, and recipients of repeated transfusions. Health care workers accidentally exposed to materials infected with hep b (such as needle sticks), and individuals with known sexual contact with hep b patients are available in the u.s. Both are highly effective and provide protection even after only one dose. Two doses are recommended for adults and 3 doses for children (under 18 years of age) to provide prolonged protection. Vaccination, hepatitis b: hepatits b (hep b) vaccine gives prolonged protection, but 3 shots over a half year are usually required. In the u.s., all infants receive hep b vaccine. Two vaccines (engerix-b, and recombivax-hb) are available in the us. The first dose of hep b vaccine is frequently given while the newborn is in the hospital or at the first doctor visit following birth. The second dose is given about 30 days after the initial dose. A booster dose is performed approximately six months later. Babies born to mothers testing positive for hep b receive, in addition, hbig (hep b immune globulin) for prompt protection. Older children (11-12 years) are advised to receive a hep b booster as are adults in high-risk situations including healthcare workers, dentists, intimate and household contacts of patients with chronic hep b infection, male homosexuals, individuals with multiple sexual partners, dialysis patients, iv drug users, and recipients of repeated transfusions. Health care workers accidentally exposed to materials infected with hep b (such as needle sticks), and individuals with known sexual contact with hep b patients are usually given both hbig and vaccine to provide immediate and long term protection. (12 Dec 1998) |
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| vaccination, infectious hepatitis | See Vaccination, hepatitis a. (12 Dec 1998) |
| vaccineation, serum hepatitis | See Vaccination, hepatitis b. (12 Dec 1998) |
| giant cell hepatitis | Hepatitis in the neonatal period presumed to be due to a variety of causes, chiefly viral; characterised by direct and indirect bilirubinaemia, hepatocellular degeneration, and appearance of multinucleated giant cells; may be difficult to distinguish from biliary atresia, but is more likely to end with recovery, although cirrhosis may develop. Synonym: giant cell hepatitis. (05 Mar 2000) |
| virus A hepatitis | A virus disease with a short incubation period (usually 15 to 50 days), caused by hepatitis A virus, a member of the family Picornaviridae, often transmitted by faecal-oral route; may be inapparent, mild, severe, or occasionally fatal and occurs sporadically or in epidemics, commonly in school-age children and young adults; necrosis of periportal liver cells with lymphocytic and plasma cell infiltration is characteristic and jaundice is a common symptom. Synonym: epidemic hepatitis, hepatitis A, infectious hepatitis, MS-1 hepatitis, short incubation hepatitis, virus A hepatitis. (05 Mar 2000) |
| virus B hepatitis | A virus disease with a long incubation period (usually 50 to 160 days), caused by hepatitis B virus, a DNA virus and member of the family Hepadnoviridae, usually transmitted by injection of infected blood or blood derivatives or by use of contaminated needles, lancets, or other instruments; clinically and pathologically similar to viral hepatitis type A, but there is no cross-protective immunity; HBsAg is found in the serum and the hepatitis delta virus occurs in some patients. Synonym: hepatitis B, serum hepatitis, transfusion hepatitis, virus B hepatitis. (05 Mar 2000) |
| virus C hepatitis | Principal cause of non-A, non-B posttransfusion hepatitis caused by an RNA virus that may be related to Flaviviridae family. Synonym: hepatitis C, virus C hepatitis. (05 Mar 2000) |
| virus hepatitis | Liver inflammation caused by viruses. Specific hepatitis viruses have been labelled a, b, c, d, e, f, and g. While other viruses can also cause hepatitis, their primary target is not the liver. (12 Dec 1998) |
| virus hepatitis of ducks | A disease of very young ducklings, caused by the duck hepatitis virus (family Hepadnoviridae) and manifested as an acute illness of several days followed by death; the principal lesions are an enlarged necrotic liver filled with ecchymotic haemorrhages. (05 Mar 2000) |
| peliosis hepatitis | A rare condition in which the liver contains very numerous small blood-filled spaces, sometimes lined with endothelium; it may be found incidentally or rupture may cause intraperitoneal haemorrhage. (05 Mar 2000) |
| persistent chronic hepatitis | A benign chronic hepatitis that may follow acute viral hepatitis A or B, or complicate bowel diseases; after six months, liver biopsy changes are mild, unlike active chronic hepatitis; rarely, if ever, progresses to cirrhosis, portal hypertension, or liver failure. (05 Mar 2000) |
| cholangiolitic hepatitis | Hepatitis with inflammatory changes around small bile ducts, producing mainly obstructive jaundice; may be due to viral infection or bacterial infection ascending biliary tree because of obstruction. (05 Mar 2000) |
| cholestatic hepatitis | Jaundice with bile stasis in inflamed intrahepatic bile ducts; usually due to toxic effects of a drug. (05 Mar 2000) |
| chronic active hepatitis | <pathology> This is a form of continuing liver inflammation that results in liver cell death. Causes include viral infection (hepatitis D, hepatitis B, hepatitis C), autoimmune disease, drug ingestion or metabolic causes. Chronic active hepatitis will lead to hepatic failure and death in a small percentage of these patients. (27 Sep 1997) |
| chronic hepatitis | Any of several types of hepatitis persisting for more than six months, often progressing to cirrhosis. Synonym: chronic active liver disease. (05 Mar 2000) |