patient-controlled analgesia

Definition / meaning of patient-controlled analgesia

A method of pain relief in which the patient controls the amount of pain medicine that is used. When pain relief is needed, the person can receive a preset dose of pain medicine by pressing a button on a computerized pump that is connected to a small tube in the body. Also called PCA.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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