Double-blind: Term used to described a study in which both the investigator or the participant are blind to (unaware of) the nature of the treatment the participant is receiving. Double-blind trials are thought to produce objective results, since the expectations of the researcher and the participant about the experimental treatment such as a drug do not affect the outcome. Also called double-masked. See also: Double-blinded study.
- Double-blinded study
Double-blinded study: A medical study in which both the subjects participating and the researchers are uaware of when the experimental medication or procedure has been given. Double-blinded studies are often used when initial studies shows particular promise.
Double-jointed: Popular term to describe a joint that is unusually flexible. Medically, the joint is said to be hyperflexible, hyperextensible, or hypermobile. People whose fingers are hypermobile have higher rates of arthritis in the hands.
Using water or a medicated solution to clean the vagina and cervix or any other body cavity or part.
Usually, a stream of water applied into the vagina for cleansing purposes. A douche can use a solution, such as vinegar and water, rather than simple water, and it can be directed at any body cavity or part.
- Douglas, pouch of
Douglas, pouch of: An extension of the peritoneal cavity between the rectum and the back wall of the uterus. Also known as the rectouterine pouch.