• Maxime Maignan, François-Xavier Koch, Marie Kraemer, Bruno Lehodey, Damien Viglino, Marie-France Monnet, Dominique Pham, Christophe Roux, Céline Genty, Carole Rolland, Jean-Luc Bosson, Vincent Danel, and Guillaume Debaty.
• University Grenoble Alps - Emergency Department and Mobile Intensive Care Unit, CHU Michallon, Grenoble, France; University Grenoble Alps, CNRS UMR 5525, TIMC-IMAG Laboratory, Team PRETA, Grenoble, France. Electronic address: mmaignan@chu-grenoble.fr.
• Resuscitation. 2015 Aug 1; 93: 113-7.

AimSupraglottic devices are thought to allow efficient ventilation and continuous chest compressions during cardiac arrest. Therefore, the use of supraglottic devices could increase the chest compression fraction (CCF), a critical determinant of patient survival. The aim of this study was to assess the CCF in out-of-hospital cardiac arrest (OHCA) patients ventilated with a supraglottic device.MethodsWe conducted an open prospective multicenter study with temporal clusters. OHCA patients treated by emergency nurses received either intermittent chest compressions with bag-valve mask ventilations (30:2 rhythm; BVM group); or continuous chest compressions with asynchronous ventilations by laryngeal tube (LT group). The primary endpoint was the CCF assessed using an accelerometer connected to the defibrillator. We also investigated the ease of use of the laryngeal tube.ResultsEighty-two patients were included (41 in each group); 68% were male and the median age was 68 (54-80) years. Patients and cardiac arrest characteristics did not differ between groups. The CCF was 75% (68-79%) in the LT group and 59% (51-68%) in the BVM group (p<0.01). LT insertion failed in nine out of 40 cases (23%). The median time of LT insertion was 26s (11-56 s). CCF was significantly lower when LT insertion failed (58% (48-74%) vs. 76% (72-80%) when LT insertion succeeded; p=0.01).ConclusionThe use of the LT during OHCA increases the CCF when compared to standard BVM ventilation. However, the impact of LT use on mortality remains unclear.Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

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