Key points
- Breathing needs the chest and belly to move freely
- Face-down positions with the arms or legs tied behind are the highest risk
- Weight on the chest or back can stop effective breathing
- A person who suddenly goes quiet or limp is in danger
- Release first, ask questions later
In detail
- Positional asphyxia happens when body position stops a person from breathing deeply enough. It can build slowly, then turn dangerous fast
- High-risk positions: lying face down with wrists tied to ankles (hogtie), the head bent forward onto the chest, hanging by the arms, and anyone kneeling, sitting or lying on another person's chest or back
- Risk rises with exhaustion, struggling, alcohol or drugs, a larger body, heart or lung conditions and any gag or hood
- Warning signs: fast or labored breathing, gasping, being unable to speak in full sentences, confusion, panic, bluish lips, or sudden silence
- Keep high-risk positions short, stay within arm's reach and keep your eyes on the person's breathing the whole time
- Prefer positions where the person lies on their side or back and can lift their head
- If the person is unresponsive: release them, check breathing, put them in the recovery position if they breathe, start CPR if they do not, and call emergency services
Warnings
- Do not mistake silence or stillness for enjoyment
- Never combine a gag with a face-down tie
- A safeword cannot help someone who cannot get enough air to speak
- Never leave a restrained person alone, even briefly
- Struggling uses more oxygen and makes things worse, not better
Resources and next steps
- A first aid course that includes CPR and the recovery position
- Local emergency services (112 in the EU, 911 in the US)
- Rope and restraint classes run by experienced instructors
- The guide on medical emergencies on this site