Pulse Check Duration in Cardiac Arrest: The 10-Second Rule

Maximum pulse check time: 10 seconds. (AHA/ERC/ILCOR guideline)

Why 10 Seconds?

• Minimizes hands-off-chest time: Every second of no compressions ↓ coronary/cerebral perfusion.
• Diagnostic accuracy: >10 sec doesn’t improve detection; lay rescuers often miss pulse or mistake own pulse.
• Algorithm integration: “No pulse? Start CPR.” If unsure → treat as pulseless.

Technique

1. Locate carotid (adult/child) or brachial (infant) artery.
2. Use 2–3 fingers (not thumb).
3. Feel for ≤10 seconds.
4. If no definite pulse → begin compressions immediately.

Context in BLS/ACLS

• Lay rescuer: No pulse check – start compressions if unresponsive, not breathing normally.
• Healthcare provider: Pulse check ≤10 sec integrated into rhythm check cycle (every 2 min).
• Waveform capnography: Continuous CPR quality + ROSC detection (ETCO₂ spike) – reduces need for pulse checks.

Common Errors

• Checking too long (>15 sec).
• Checking radial/femoral (unreliable in shock).
• Mistaking own pulse (use thumb? No—use fingers on patient).
• Delaying compressions for “one more check.”

When in doubt, compress. High-quality CPR > perfect pulse check.