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flush (flush)   transient episodic redness of the face and neck; it occurs normally with physical exertion, heat, and certain emotional factors, and pathologically with some diseases or after ingestion of certain drugs or other substances.
  the rapid delivery of a bolus of solution through an intravenous line or catheter for the purpose of maintaining patency or insuring the complete delivery of all fluids in the lumen.
 

hectic flush  a persistent or chronic flush associated with chronic debilitating disease, usually febrile.

heparin flush  a dilute solution of heparin that is used to flush an intravenous line or arterial catheter.

malar flush  a redness of the cheeks caused by excitement.





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