The patient feels less apprehensive about pain following surgery because they know they have control in their hand - by simply pushing a button. Pain relief is available around the clock - no need to wait for a nurse to deliver pain medication. The PCA unit is 'programmed' to control the dosage. The unit 'locks out' if the dosing frequency is exceeded. The patient is assured they are receiving the correct medication and dose prescribed by their physician.
Doses are smaller and available more frequently, which helps prevent sleepiness and weakness.
Pain is more consistently controlled. Dosing at regular intervals reduces the overall amount of medication needed to control pain. Overall, PCA can help patients recover quicker. Patients who are given control over their pain ambulate sooner, which promotes circulation and healing.