Medical Dictionary


noun in·ter·ven·tion \ˌint-ər-ˈven-chən\

Medical Definition of intervention

  1. :  the act or fact or a means of interfering with the outcome or course especially of a condition or process (as to prevent harm or improve functioning) Many patients with a flail mitral leaflet present with acute severe mitral regurgitation and pulmonary edema, requiring prompt surgical intervention.—Catherine M. Otto, The Journal of the American Medical Association, 14 Aug. 2013 Another helpful postpartum intervention is the inexpensive, uterine-contracting drug misoprostol, which has been shown by research in India to prevent up to half of all postpartum hemorrhaging if administered within a few minutes after delivery.—Judith F. Helzner, Ms. Magazine, Summer 2008


\-ˈvēn\play intransitive verb




Chemoprevention is the attempt to use natural and synthetic compounds to intervene in the early precancerous stages of carcinogenesis, before invasive disease begins.—Peter Greenwald, Scientific American, September 1996


\-ˈvench-(ə-)nəl\play adjective Interventional radiologists perform surgery guided by X-ray images to stop bleeding from the intestines, prevent some strokes and treat other problems.—Lawrence K. Altman, The New York Times, 19 June 2007 … these agents are given while preparations for thrombolytic therapy or interventional cardiac catheterization are being made.—E. William Hancock, Scientific American Bulletin, November 1994


\-ˈven-chə-nist\play noun or adjective Stange et al. recently discovered that family physicians are more interventionist in their screening than the U.S. Preventive Services Task Force recommends.—John M. Lee, The New England Journal of Medicine, 11 Feb. 1993

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a rounded knoll or a ridge of ice

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