What is an appropriate initial response if a patient with a morphine PCA exhibits respiratory depression?

In cases of respiratory depression caused by morphine administration, especially through a patient-controlled analgesia (PCA) pump, the immediate and appropriate response is to administer Narcan (naloxone). Narcan is an opioid antagonist that effectively reverses the effects of opioid overdose, including respiratory depression. Rapid intervention is crucial because respiratory depression can lead to hypoxia and other serious complications if not addressed promptly.

Administering Narcan works by displacing the opioid from its receptors, thereby restoring normal respiratory function. The key to this intervention is timeliness, as respiratory depression can quickly progress to life-threatening situations. Therefore, the use of Narcan is a critical lifesaving measure in this scenario.

The other options do not adequately address the immediate risks posed by respiratory depression. Increasing the dose of morphine would exacerbate the problem, while notifying the physician is important but does not provide the immediate relief needed for the patient's respiratory status. Monitoring the patient without any intervention is insufficient and could lead to worsening of their condition. Thus, administering Narcan is the most appropriate and effective response in this situation.