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What is a fluid challenge?

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A fluid challenge is a technique used to evaluate fluid responsiveness among critically ill patients. It is a diagnostic intervention practice that corrects volume depletion without risking fluid overload, according to the United States National Library of Medicine.

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One of the pioneering proponents of the fluid challenge was Dr. Max Harry Weil, a prominent figure in critical care medicine. The method was initially used to revive patients under circulatory shock, states SUNY Downtown Medical Center.

A fluid challenge involves the administration of a predetermined small quantity of fluid over a short span of time while keeping track of the patient's cardiac parameters. The response of the patient provides an indicator whether to continue further fluid replacements.

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