A blood clot within a deep vein, typically in the thigh or leg. The blood clot (thrombus) can break off as an embolus and make its way to the lung, where it can cause lung problems. Abbreviated DVT. Also known as economy-class syndrome.
- Deer mouse
Deer mouse: A deceptively cute rodent capable of carrying the types of hantavirus that cause HPS (hantavirus pulmonary syndrome) in the US. The deer mouse has big eyes and big ears. Its head and body are normally about 2 to 3 inches long, and the tail adds another 2 to 3 inches in length. It […]
- Deerfly fever
Deerfly fever: An infection in rabbits and other wild rodents caused by the bacterium Francisella tularensis that can be transmitted to humans by contact with infected animal tissues or ticks. Also called tularemia. The main mode of transmission to humans is tick bites in the summer and exposure to rabbits in the fall and winter […]
- Defecation syncope
Defecation syncope: The temporary loss of consciousness (syncope) upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecating, coughing or swallowing. The reaction also can be due […]
- Defect, atrial septal (ASD)
Defect, atrial septal (ASD): A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs are a major class of congenital cardiac malformation.
- Defect, enzyme
Defect, enzyme: A disorder resulting from a deficiency (or functional abnormality) of an enzyme. For example, newborns are routinely screened for certain enzyme defects, such as phenylketonuria (PKU) and galactosemia.