A client with lung cancer was given an oral narcotic for pain one hour ago. Which finding should the practical nurse (PN) report to the charge nurse?

A. Heart rate reduced to 100 beats/minute: A HR of 100 is within normal limits for an adult and not concerning here. B. Bilateral pupils equal and reactive to light: Normal finding, no immediate concern. C. Pain decreased to a 2 on a 0 to 10 point pain scale: Indicates the medication was effective for pain relief. D. Respiratory rate of 6 breaths/minute: Dangerously low; indicates opioid-induced respiratory depression requiring immediate action.