PCA

patient-controlled analgesia (PCA),

a drug-delivery system that dispenses a preset intravascular dose of a narcotic analgesic when the patient pushes a switch on an electric cord. The device consists of a computerized pump with a chamber containing the drug. The patient administers a dose of narcotic when the need for pain relief arises. A lockout interval automatically inactivates the system if a patient tries to increase the amount of narcotic within a preset period.

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PCA 

patient-controlled analgesia.

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PCA

passive cutaneous anaphylaxis.

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PCA

1 Parietal cell antibody, see there 2 Patient-controlled analgesia, see there 3. Percutaneous carotid arteriogram 4. Peripheral circulatory assist 5. Posterior cerebral artery