Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «B»:
Betel nut: The nut of the Areca palm tree and an ingredient of betel nut quid, an addictive mix chewed in some Pacific and Asian cultures. Its use is associated with aggressive oral cancers affecting especially the inner lining of the cheeks and lips are the primary tumor sites. Other sites include ...
Bevacizumab: Generic name for a monoclonal antibody anticancer drug. See: Avastin....
Beverly Hills diet
Beverly Hills diet: The Beverly Hills diet is a weight loss plan based upon the premise that eating certain fruits leads to chemical reactions in the body that enhance weight loss. Only fruit is consumed for the first period (usually 10 days) on this diet, and then carbohydrates (on day 11) and pro...
NOTE: April 7, 2005, Pfizer agreed to suspend sales and marketing of Bextra in the U.S., pending further discussions with the with the FDA. For more information, please read the
FDA press release.
Bextra: Brand name for valdecoxib, a nonsteroidal anti-inflammatory drugs (NSAID) that inhibits cox-2...
Bezoar: A clump or wad of swallowed food and/or hair. Bezoars can sometimes be found to cause blockage of the digestive system, especially at the exit of the stomach.
When a bezoar is composed of hair, it is referred to as a hairball or trichobezoar. When a bezoar is composed of vegetable materials...
BF: Abbreviation for "black female" used by doctors as
shorthand when jotting down the results of their physical examination.
For example, a WDWNBF = well developed, well nourished black
female; WDWNWF = well developed, well nourished white female; WDWNWM
= well developed, well nourished white
Bi-: Prefix meaning two, as in biceps or
BIA: Bioelectric impedance analysis....
Biallelic: Pertaining to both alleles (both alternative forms of a gene). For example, biallelic mutations in the gene MYH predispose to colon cancer....
Bias: 1. When a point of view prevents impartial judgment on issues relating to the subject of that point of view. In a clinical trial, bias refers to effects that a conclusion that may be incorrect as, for example, when a researcher or patient knows what treatment is being given. To avoid bias, a b...
Bicarbonate: In medicine, bicarbonate usually
refers to bicarbonate of soda (sodium bicarbonate, baking
soda) white powder that is common ingredient in
antacids. Also, the bicarbonate level is an indirect measure of the acidity of the blood that is determined when electrolytes are tested. The nor...
Biceps: The biceps is a muscle that has two heads or origins. In Latin, biceps means two-headed and is derived from "bis", twice + "caput", head.
There is more than one biceps muscle. The biceps brachii is the well-known flexor muscle in the upper arm and bulges when the arm is bent in a C-shape wit...
Bicornuate: Having two horns or horn-shaped branches.
The uterus (normally unicornuate) can sometimes be bicornuate (with two branches, eg, one
at about 10:30 and the other at about 1:30)....
Bicuspid: Having two flaps or
cusps. The heart valve that is called the bicuspid valve is
located between the left atrium and left ventricle.
Although the aortic valve in the heart normally is
tricuspid (with three cusps), it may sometimes be bicuspid.
Bicuspid aortic valve
Bicuspid aortic valve: Whereas
the normal aortic valve in the heart has three flaps
(cusps) that open and close, a bicuspid valve has only two.
There may be no symptoms in childhood, but in time the
valve may become stenotic (narrowed), making it harder for
blood to pass through it, or the va...