Which observation during morphine sulfate infusion should prompt a nurse to contact a physician?

A respiratory rate of 10 breaths per minute during morphine sulfate infusion is a significant cause for concern and warrants prompt communication with the physician. Morphine, as an opioid analgesic, can cause respiratory depression as a side effect, particularly at higher doses or with increased sensitivity in certain patients. A normal respiratory rate for adults typically falls between 12 to 20 breaths per minute. When the respiratory rate drops to 10, it indicates potential respiratory distress or over-sedation, which can lead to hypoxia and other serious complications if not addressed quickly.

This observation highlights the importance of monitoring respiratory status when administering opioids, as maintaining adequate ventilation is crucial to patient safety while managing pain.