Opioid Overdose With Uncertain Pulse in a Shelter
You are a volunteer at an overnight shelter. At 2 a.m. you find a 30-year-old man slumped in a bathroom stall with a syringe on the floor, pinpoint pupils, and slow, shallow gasping at about 4 breaths per minute. He does not respond to a sternal rub. You have naloxone nasal spray in the office 30 seconds away, a barrier device, and a phone. A coworker is with you. The man has a weak, slow carotid pulse you think you feel, but you are not certain.
1. Decide the order of operations: naloxone, rescue breathing, compressions, or calling 911 - and justify it.
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Order:
- Call 911 immediately (delegate to coworker) - this is a life-threatening emergency regardless of naloxone response.
- Open the airway and give rescue breaths - he has a pulse (even if uncertain) but inadequate breathing at 4/min. The immediate killer in opioid overdose is respiratory depression/hypoxia, so ventilate: 1 breath every ~6 seconds (about 10/min) for an adult with a pulse but inadequate breathing, reassessing pulse and breathing about every 2 minutes.
- Give naloxone (nasal spray) as soon as it is at hand - it reverses opioid-induced respiratory depression. It is not a substitute for ventilation; if he is not breathing adequately, you breathe for him while the naloxone takes effect.
- Start CPR only if there is no pulse or he is not breathing normally and you cannot detect a pulse - for a lay rescuer, uncertain pulse plus abnormal breathing is treated as cardiac arrest: begin compressions. The judgment tested: ventilation is the priority in opioid overdose, and an uncertain pulse in an unresponsive, abnormally breathing adult should push you toward CPR, not toward waiting.
2. Naloxone is given and he begins breathing at 12/min but remains unresponsive. What now, and what are the two most dangerous misconceptions to avoid?
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Continue to monitor airway, breathing, and pulse continuously; place him in a recovery position to protect the airway; keep him warm; stay until EMS arrives. Naloxone's effect can wear off before the opioid does, so re-sedation and recurrent respiratory depression are expected risks - do not leave him unmonitored, and be ready to ventilate and re-dose per protocol/EMS direction. Misconceptions to avoid:
- 'Naloxone fixes it, we're done.' It does not guarantee airway protection or lasting reversal; ventilation and monitoring remain essential.
- 'He's breathing, so no CPR needed ever.' If respirations or pulse deteriorate again, you reassess and act - and if he becomes pulseless or stops breathing normally without a detectable pulse, you start CPR. Also avoid: assuming the syringe means only opioids (mixed overdose is possible), and giving anything by mouth to an unresponsive person.
3. Your coworker freezes and says 'I can't do compressions, I'll hurt him.' How do you manage the team in this moment?
Read the worked answer
Use closed-loop, task-specific communication rather than a general plea for help: name the person, name the task, and get confirmation. Example: "Sam - call 911 now on speaker, tell them opioid overdose, unresponsive, breathing 4 times a minute, and tell me when they answer." Then: "Sam - when you're done, bring the naloxone from the office and the barrier device." If Sam cannot compress, you compress and assign him the tasks he can do (calling, retrieving equipment, meeting EMS at the door, clearing a path). Address the fear directly and briefly: compressions on someone who is unresponsive and not breathing normally carry essentially no risk of 'hurting' a person who will die without them, and good compressions are deep and fast by design. Keep the correction short and return to care - prolonged reassurance is itself a delay. Judgment point: team dynamics in BLS means explicit role assignment, confirmation of understanding, and not letting a frozen helper stall the resuscitation.