INCEPTION

Population

• Patients aged 18-70 years with out-of-hospital cardiac arrest who received bystander CPR, had an initial ventricular arrhythmia, and did not have return of spontaneous circulation within 15 minutes after CPR was initiated.

Intervention

Extracorporeal CPR.

Comparator

Conventional CPR (standard advanced cardiac life support).

Key results

• Of 160 patients who underwent randomization, 70 were assigned to extracorporeal CPR and 64 to conventional CPR; 26 patients who did not meet inclusion criteria at hospital admission were excluded.
• Thirty-day survival with a favorable neurologic outcome: 14 (20%) with extracorporeal CPR vs 10 (16%) with conventional CPR; OR 1.4 (95% CI 0.5-3.5; p=0.52).

Harms

• The number of serious adverse events per patient was similar in the two groups.

Practice impact

• Do not assume early extracorporeal CPR improves survival with a favorable neurologic outcome in refractory out-of-hospital cardiac arrest.

Applicability

• Most applicable to patients aged 18-70 years with out-of-hospital cardiac arrest who received bystander CPR, had an initial ventricular arrhythmia, and no ROSC within 15 minutes, treated in a multicenter ECPR system.

Limitations

• After randomization, 26 patients were excluded for not meeting inclusion criteria at hospital admission.
• This was a multicenter trial rather than a single-center ECPR pathway.
• The abstract does not detail specific extracorporeal CPR complications.

Common misinterpretations

• A negative multicenter ECPR trial does not erase a contrasting single-center result; the populations and systems differed.
• Similar counts of serious adverse events do not prove extracorporeal CPR is risk-free.