Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «R»:
Roseola infantilis is another name for roseola, also formally called roseola infantum. The following is a brief rundown on roseola:
Cause: Roseola is caused by a virus called human herpesvirus 6 (HHV-6) and, possibly, human herpesvirus 7 (HHV-7).
Age range: Roseola is most commo...
Roseola infantum: Roseola infantum is another
name for roseola, also formally called roseola infantilis. The
following is a brief rundown on roseola:
Cause: Roseola is caused by a virus called human
herpesvirus 6 (HHV-6) and, possibly, human herpesvirus 7 (HHV-7).
Age range: Roseola is most com...
Rossi counter: An instrument used to measure the energy deposited by radiation in microscopic sites such as cells. Named for its creator Harald H. Rossi (1917-2000), a radiobiophysicist who contributed much to our ability to measure minute amounts of ionizing radiation and their effects on living th...
Rotator cuff: A group of four tendons that stabilize the shoulder joint.
Each of the four tendons hooks up to a muscle that moves the shoulder in a specific direction. The four muscles whose tendons form the rotator cuff are:
The subscapularis muscle, which moves the arm by turning it inward (inte...
Rotator cuff disease
Rotator cuff disease: Damage to the rotator cuff, a group of four tendons that stabilize the shoulder joint and move the shoulder in various directions.
A common cause of shoulder pain, rotator cuff disease can be due to trauma (e.g., from falling and injuring the shoulder or from overuse in sports...
Rotavirus (RV): A leading cause of severe winter
diarrhea in young children, RV each year causes an estimated
500,000 doctor visits and 50,000 hospital admissions in the United
States. Almost everyone
catches RV before entering school but, with rehydration (and good
Roth's spot: A hemorrhage in the retina with a white center. Originally associated with bacterial endocarditis, Roth's spots may be seen in leukemia, diabetes, collagen-vascular diseases, and other conditions that predispose to hemorrhage in the retina....
Rothmund-Thomson syndrome: An hereditary disease characterized by progressive degeneration (atrophy), scarring and abnormal pigmentation of the skin together with growth retardation, premature baldness, juvenile cataracts, depressed nasal bridge, and malformations of the teeth, hair, and bone. There...
Round: To go around and see a patient in a hospital or other in-patient setting....
Round window: The membrane separating the inner ear and middle ear. The tympanum (eardrum) separates the middle ear and outer ear....
Rounds: The act of seeing patients in the hospital or another in-patient setting. After doing his hospital rounds, Dr. Moscati felt ill, went to his room, sat in his chair and expired....
Roundworm: A type of parasitic worm that hatches in the intestines and lives there. The eggs of the roundworm usually enter the body through contaminated water or food or on fingers placed in
the mouth after the hands have touched a contaminated object.
Symptoms from roundworm infections include ...
Roundworm C. elegans genome
Roundworm C. elegans genome: See: C. elegans genome....
Roundworm genome: See: C. elegans genome....
Roux-en-Y gastric bypass
Roux-en-Y gastric bypass: A surgical procedure which may be done for severe obesity. The procedure involves cutting the stomach in two to create a pouch out of the smaller proximal (near) portion of the stomach, attaching it to the small intestine, bypassing a large part of the stomach and all of th...