What should be monitored after administering Narcan to a patient?

Monitoring the patient’s respiratory rate after administering Narcan is particularly crucial because Narcan (naloxone) is an opioid antagonist used to reverse the effects of opioid overdose, particularly respiratory depression. Following administration, it's important to assess how well the patient is breathing as opioid overdose often leads to life-threatening respiratory depression, and Narcan's action can help restore normal breathing.

Blood pressure and heart rate are also significant parameters to monitor after Narcan administration. Changes in blood pressure and heart rate can occur due to the reversal of opioid effects on the cardiovascular system or as a reaction to the stress of potential withdrawal symptoms in opioid-dependent individuals. Therefore, monitoring all three, respiratory rate, blood pressure, and heart rate, gives a comprehensive view of the patient’s stability and response to the treatment.

Since respiratory monitoring is the most immediate concern, coupled with the importance of keeping an eye on cardiovascular indicators, it is essential to monitor them all for holistic patient care and safety post-intervention. Acknowledging the importance of each of these parameters confirms why monitoring all of them is the best choice in this situation.