Category: Ra-Re

  • Rehydration

    The process of restoring lost water (dehydration) to the body tissues and fluids. Prompt rehydration is imperative whenever dehydration occurs, from diarrhea, exposure, lack of drinking water, or medication use. Rehydration can be by the oral route or by the intravenous administration of fluids.

  • Rehabilitation

    The process of helping a person who has suffered an illness or injury restore lost skills and so regain maximum self-sufficiency. For example, rehabilitation work after a stroke may help the patient walk and speak clearly again.

  • Rehab

    An abbreviation for rehabilitation.

  • Regurgitation

    A backward flowing. For example, vomiting is a regurgitation of food from the stomach, and the sloshing of blood back into the heart when a heart valve is incompetent is a regurgitation of blood.

  • Regional enteritis

    Crohn’s disease, a chronic inflammatory disease of the intestine primarily in the small and large intestines but which can occur anywhere in the digestive system between the mouth and the anus. Named after Burrill Crohn who described the disease in 1932. The disease usually affects persons in their teens or early twenties. It tends to be chronic, recurrent with periods…

  • Regimen

    A plan or a regulated course, such as a diet, exercise, or treatment, that is designed to give a good result. A low-salt diet is one type of dietary regimen.

  • Refractory

    Not yielding, or not yielding readily, to treatment.

  • Refraction

    In opthalmology, the bending of light that takes place within the human eye. Refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Lenses can be used to control the amount of refraction and correct those errors.

  • Reflux

    The term used when liquid backs up into the esophagus from the stomach.

  • Reflex

    An involuntary reaction. For example, the corneal reflex is the blink that occurs upon irritation of the eye.