Which of the following is an advantage of PCA pumps?

• A. Increases patient autonomy and may reduce total medication use
• B. Requires nurse-controlled dosing only
• C. Provides a constant analgesic blood level
• D. Eliminates need for monitoring

Answer: (C)

PCA pumps provide doses on demand within preset safety limits, so the patient can tailor relief as pain changes. Because the patient can give small, timely boluses and the system uses a lockout interval, the drug level in the bloodstream stays more consistent than with intermittent, nurse-administered dosing. This relatively steady analgesic blood level helps maintain continuous pain control and improves comfort and satisfaction. It’s important to remember that monitoring remains necessary and that dosing isn’t exclusively nurse-controlled—patients have the ability to self-administer within the safe limits set by the clinician.