What is the role of naloxone in patients in cardiac arrest with suspected opioid overdose?

• A. Naloxone administration should not interfere with high-quality CPR
• B. Naloxone should replace high-quality CPR
• C. Naloxone should be given immediately and alone
• D. Naloxone has no role in the field

Answer: (A)

In cardiac arrest with suspected opioid overdose, the priority is high-quality CPR. Naloxone can reverse opioid-induced respiratory depression, but it does not restore circulation on its own, so it should be used as an adjunct without interrupting chest compressions.

The reason this is the best approach is that maintaining continuous, effective CPR keeps blood flowing to vital organs and buys time for any reversible causes to be addressed. Administering naloxone should not lead to delaying or stopping CPR; ideally, give it in a way that minimizes pauses, such as during a brief interruption or through a route available without delaying compressions.

If naloxone is given, continue CPR and reassess the patient for return of spontaneous circulation as per ACLS protocols. If circulation returns, manage airway, breathing, and circulation accordingly. The drug can help reverse the opioid effects, but it does not replace the need for ongoing CPR, defibrillation when indicated, and other resuscitation steps.