Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «R»:
Rubella vaccine: A vaccine designed to prevent rubella, or German measles.
German measles was once seen merely as a child's unpleasant rite of passage. It was thought to be a mild malady that was usually over and done in three days. So what?
Then an outbreak of rubella began in 1964. It lasted tw...
Rubeola (measles): Rubeola is the ordinary measles,
an acute highly contagious viral disease with fever, runny
nose, cough, red eyes, and a spreading skin rash.
Rubeola (measles) is a potentially disastrous disease. It can be
complicated by ear infections, pneumonia, encephalitis (that can cau...
Rubor: Redness, one of the four classic signs of inflammation (together with dolor, calor, and tumor). From the Latin rubor, heat. See also: Dolor; Calor; Tumor....
RUL: Acronym for the right upper lobe (of the lung).
The right lung has three lobes: the right lower lobe (RLL), the right middle lobe (RML), and the right upper lobe (RUL).
The left lung has but two lobes: the left upper lobe (LUL) and the left lower lobe (LLL).
The reason why the right lung has t...
Rule out: A term much used in medicine, meaning to eliminate or exclude something from consideration. The ACB (albumin cobalt binding) test helps rule out a heart attack in the differential diagnosis of severe chest pain....
Rumination: 1. Regurgitating food after a meal and then swallowing and digesting some of it. Cattle and other ruminant animals have a four-chambered stomach for the rumination of food and so can chew their cud. Some people, particularly infants, engage in something similar by regurgitating food afte...
Runny nose: Rhinorrhea is the medical term for this
common problem. From the Greek words "rhinos" meaning "of the nose"
and "rhoia" meaning "a flowing."...
Runt-related transcription factor 1
Runt-related transcription factor 1: See: Runx-1....
Runx-1: A protein that is a transcription factor controlling when genes are switched on or off. Runx-1 acts by binding to regulatory sequences -- specific sequences of DNA close to the genes they regulate. These DNA sequences, called Runx-1 binding sites, are scattered throughout the human genome, w...
Rupture: A break or tear in any organ (such as the spleen) or soft tissue (such as the achilles tendon). Rupture of the appendix is more likely among uninsured and minority children when they develop appendicitis....
Rupture of appendix
Rupture of appendix: A break or tear in the appendix, usually due to appendicitis. Also called perforation of the appendix. Rupture of appendix can lead to a periappendiceal abscess (a collection of infected pus) or diffuse peritonitis (infection of the entire lining of the abdomen and the pelvis)...
Rupture, uterine: A tear of the uterus, an uncommon but very serious situation that may result in hysterectomy, urologic injury to the woman, a need for blood transfusion, maternal death, and perinatal complications including neurologic impairment or death of the baby.
Causes of uterine rupture inc...
Ruptured spleen: Rupture of the capsule of the spleen,
an organ in the upper left part of the abdomen, is a potential catastrophe that requires
immediate medical and surgical attention. Splenic rupture permits large amounts of blood
to leak into the abdominal cavity which is severely painful and lif...
RUQ: Abbreviation for the right upper quadrant (quarter). The RUQ of the abdomen contains the liver and the gallbladder.
(By contrast, LUQ stands for the left upper quadrant, LLQ stands for the left lower quadrant, and RLQ stands for the right lower quadrant.)...
RV (rotavirus):Aside from recreational vehicle, RV is
an abbreviation for rotavirus, a leading cause of severe winter
diarrhea in young children.
Each year RV causes an estimated 500,000 doctor visits and 50,000
hospital admissions in the United
States. Almost every child catches RV before ent...