Patient-controlled analgesia: a review of effectiveness of therapy and an evaluation of currently available devices.


Patient-controlled analgesia (PCA) is a major advance in the management of pain in postoperative and cancer patients. The success of PCA has resulted in a proliferation of marketed devices to administer small bolus doses of parenteral pain-control drugs at fixed intervals controlled by the patient with the push of a button. Because patients demonstrate… (More)


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