Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «H»:
HEOD: The abbreviation for the scientific name of the insecticide dieldrin. (The scientific name for dieldrin [1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4á,5,6,7,8,8á-octahydro-1,4-endo,exo-5,8-dimethanonaphthalene] is not easily recited or recalled.) See: Aldrin and dieldrin....
HEPA: Acronym that stands for High-Efficiency Particulate Air and for High-Efficiency Particulate Arrestor.
HEPA filters are used for isolation and immunocompromise units, operating rooms, removal of allergens from the air (for hay fever, asthma, etc.) and other applications where maximum reduction...
Hepar: The liver or a preparation made from it. The term hepar is not often used today. It is a direct borrowing of the Greek hepar, liver....
Heparin: An anticoagulant (anti-clotting) medication. Heparin is
useful in preventing thromboembolic complications (clots that travel from their site of
origin through the blood stream to clog up another vessel). Heparin is also used in the
early treatment of blood clots in the lungs (pulmonary embo...
Heparin, low-weight: A newer form of the drug
heparin (brand name: Lovenox, Fragmin) that has a lower
molecular weight than normal heparin. Fewer blood tests are
needed, and it may be . superior to regular
(unfractionated) heparin in cases of unstable angina and
other cardiac diseases. See also...
Heparin-induced thrombocytopenia: Low blood platelet count as a result of the medication heparin. Heparin is used to treat and prevent abnormal blood clotting. Heparin-induced thrombocytopenia can be mild or serious and fatal....
Hepat-: Prefix or combining form used before a vowel to refer to the liver. From the Greek hepar, liver....
Hepatic: Having to do with the liver. Pronounced hi-'pa-tik. From the Latin hepaticus derived from the Greek hepar meaning (not too surprisingly) the liver....
Hepatic artery: An artery that distributes blood to the liver, pancreas and gallbladder as well as to the stomach and duodenal portion of the small intestine....
Hepatic biopsy: See: Liver biopsy....
Hepatic duct: A duct that carries bile from the liver into the common bile duct which conveys it to the duodenum (the upper part of the small intestine). There are three hepatic ducts: the right hepatic duct (which drains bile from the right half of the liver); the left hepatic duct (which drains bi...
Hepatic duct, common
Hepatic duct, common: See: Common hepatic duct....
Hepatic duct, left
Hepatic duct, left: See: Left hepatic duct....
Hepatic duct, right
Hepatic duct, right: See: Right hepatic duct....
Hepatic ductular hypoplasia, syndromatic
Hepatic ductular hypoplasia, syndromatic:
Also called Alagille syndrome or arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille syndrome usually pre...