Immediate Initiation of CPR in Unresponsive Patients

Indications and Guideline Recommendations

The 2020 American Heart Association (AHA) guidelines state that when a patient is unresponsive, has absent or abnormal breathing (including gasping), and no definite pulse is detected within 10 seconds, cardiopulmonary resuscitation (CPR) must be started immediately, regardless of frailty or appearance. 1, 2
In an elderly, frail, unresponsive patient without a documented Do‑Not‑Resuscitate (DNR) order, immediate CPR is recommended because the presumption is to attempt resuscitation in the absence of known patient wishes. 1, 3

Performing CPR on a person who is not in true cardiac arrest carries minimal harm: chest pain occurs in ~8.7 % of cases, rib or clavicle fractures in ~1.7 %, and rhabdomyolysis in ~0.3 %; no visceral injuries have been reported. 3, 2
Withholding CPR from a patient who is actually in cardiac arrest results in death, making the risk–benefit balance overwhelmingly in favor of initiating resuscitation. 3, 4

Agonal breathing (gasping or irregular respirations) is observed in 40–60 % of cardiac‑arrest victims and is the most common reason rescuers fail to recognize arrest. 3, 2
Any unresponsive patient with absent or abnormal breathing should be treated as being in cardiac arrest. 3, 2

Clinicians frequently exceed the recommended 10‑second limit when checking for a pulse and often have difficulty confirming pulse presence. 3, 2, 5
If a definitive pulse is not felt within 10 seconds, chest compressions should be started immediately. 1, 2, 5

Check responsiveness by tapping and shouting; this should be done first. 1, 6
Simultaneously assess breathing and pulse for no longer than 10 seconds. 1, 2
If the patient is unresponsive, has no breathing or only gasping, and no definite pulse → start CPR immediately. 1, 3
Activate the emergency response system and retrieve an automated external defibrillator (AED). 1, 6
Begin chest compressions at a rate of 100–120 compressions per minute, depth of at least 2 inches, with a 30:2 compression‑to‑ventilation ratio. 6, 4

Do not delay the start of compressions to remove clothing; begin compressions immediately. 4, 7
Do not interpret agonal breathing as adequate respiration; it signifies cardiac arrest and requires CPR. 3, 2

The American Heart Association recommends initiating CPR if a patient is unconscious/unresponsive with absent or abnormal breathing and no definite pulse within 10 seconds, as evidenced by the patient's agonal breathing, severe bradycardia, and half-open eyes with no focus or tracking 8, 9
Agonal breathing with mouth open is a common sign of cardiac arrest, present in 40-60% of cases, and should not delay CPR initiation 8, 9
A single pulse felt does not constitute adequate circulation, and CPR should not be delayed if pulse is not definitively palpated, with healthcare providers having difficulty reliably detecting pulses 8, 9, 10
The benefit of providing CPR to someone in cardiac arrest vastly outweighs any potential harm of compressions on someone who is unconscious but not in arrest, with injury rates being low 8, 9

The American Heart Association guidelines suggest that epinephrine is appropriate in cardiac arrest with suspected hyperkalemia, as it helps maintain coronary and cerebral perfusion pressure during CPR 11
Epinephrine provides additional inotropic and chronotropic support to restore adequate cardiac output in cardiac arrest 11
Calcium and sodium bicarbonate can precipitate if mixed directly, but flushing between medications minimizes this risk, and sequential administration with flushing is reasonable in emergency situations 11

Intubation was indicated once ROSC was achieved, as the patient was fighting the BVM, post-cardiac arrest, and at risk for re-arrest, requiring controlled ventilation to optimize oxygenation and prevent hyperventilation 11, 12
Avoiding succinylcholine in hyperkalemia is critical, as it can cause dangerous potassium release, and rocuronium and etomidate are appropriate alternatives for rapid sequence intubation in this setting 12

Preloading the bougie in the tube can work but requires the bougie to maintain its curve, and going in "live" without suction connected is not ideal but can be managed successfully 12
Ensuring suction setup familiarity before intubation attempts and considering pre-curved bougie technique can improve efficiency and effectiveness in difficult airways 12
IO access is appropriate when IV access is difficult, as it provides an alternative route for medication administration 11