How do patients use patient-controlled analgesia?

Answer:
When the patient feels the need for medication, the patient presses a button similar to a nurse call button. When this button is pressed, some sound (usually a beep) is heard.
First answer by Gale Ency. of Surgery. Last edit by Gale Ency. of Surgery. Contributor trust: 10 [recommend contributor recommended]. Question popularity: 2 [recommend question].