Extracorporeal Cardiopulmonary Resuscitation

Background Extracorporeal cardiopulmonary resuscitation (eCPR) is a rescue therapy for a selected group of patients. Extracorporeal membrane oxygenation (ECMO) is initiated to bypass the cardiac system and bridge time to definitive treatment of the cardiac arrest (CA) origin. eCPR treatment is very time-critical and, if indicated, should be initiated as early as possible. Patient selection for this highly specific treatment is challenging and relies on numerous factors. In the following phase of intensive care treatment, neuroprognostication is performed. However, following current guidelines, this is only recommended 72hours after CA. Once ECMO is initiated, a complex intensive care treatment is expected, without a guarantee for full neurological recovery. There is a recognized clinical need for more precise selection criteria, alongside predictive values, to enable earlier, reliable neuroprognostication. Aim This study aims to investigate whether super-early neuroprognostication before ECMO initiation is feasible. Super-early neuroprognostication will be performed using automated pupillometry and cerebral near-infrared spectroscopy (cNIRS) before ECMO initiation. Methods Patients evaluated for eCPR treatment at the Department of Emergency Medicine will be included in this study. By a study member not involved in clinical treatment, cNIRS and automated pupillometry will be performed before ECMO initiation and at predefined intervals: 10-20 minutes after ECMO Initiation, 1 hour (±15 minutes), 2 hours (±15 minutes), and 3 hours (±15 minutes). Follow-up measurements will be taken 24 hours (± 6 hours), 48 hours (± 6 hours), and 72 hours ± 6 hours after ECMO initiation. The secondary objective is to interpret the collected data regarding outcome parameters.

Out-of-hospital cardiac arrest without resumption of spontaneous circulatory activity despite advanced medical resuscitation is considered refractory. Under certain well-defined conditions, today in many cities around the world and particularly in Paris, it benefits from resuscitation called ECPR (extracorporeal cardiopulmonary resuscitation). This technique consists of the installation of an extracorporeal membrane oxygenation (ECMO) device allowing organ perfusion while waiting for a resumption of cardiac activity. Since 2011, the Paris SAMU (SAMU 75) has set up a team capable of implementing ECPR for refractory out-of-hospital cardiac arrests. This team based within the SAMU of Paris at the Necker hospital (ECMO team) composed of an emergency doctor or anesthesiologist-resuscitator, a nurse anesthetist and an ambulance driver intervenes in Paris and its nearby region at the request of medical regulation. Given the growing development of this activity, it is essential to measure its effectiveness in real-life conditions.

A prospective pilot feasibility study of prehospital ECPR in patients with refractory OHCA

The OSIRIS trial is an investigator-initiated, multicenter, multinational, open-label, randomized controlled trial with a 2:1 concealed allocation of refractory out-of-hospital cardiac arrest (OHCA) patients to the extracorporeal cardiopulmonary resuscitation (ECPR) based approach versus the conventional cardiopulmonary resuscitation (CCPR) approach.