The past, present, and future of ventilation during cardiopulmonary resuscitationChang, Mary P.; Idris, Ahamed H.Current Opinion in Critical Care: June 2017 - Volume 23 - Issue 3 - p 188–192 doi: 10.1097/MCC.0000000000000415 CARDIOPULMONARY RESUSCITATION: Edited by Paul E. Pepe Abstract Author Information Purpose of review To evaluate the past and present literature on ventilation during out of hospital cardiac arrest, highlighting research that has informed current guidelines. Recent findings Previous studies have studied what are optimal compression-to-ventilation ratios, ventilation rates, and methods of ventilation. Continuous chest compression cardiopulmonary resuscitation (CPR) has not shown to provide a significant survival benefit over the traditional 30 : 2 CPR. The optimal ventilation rate is recommended at 8 to 10 breaths per minute. Methods such as capnography and thoracic impedance are being used to evaluate ventilation in research studies. Summary Future out of hospital cardiac arrest studies are still exploring how to optimize the delivery of ventilation during the initial stages of resuscitation. More prospective studies focusing on ventilation are needed to inform guidelines. University of Texas Southwestern, Dallas, Texas, USA Correspondence to Mary P. Chang, MD, MPH, Assistant Professor of Emergency Medicine, University of Texas Southwestern, Dallas, TX 75390-8890, USA. Tel: +1 214 648 3022; e-mail: email@example.com Copyright © 2017 YEAR Wolters Kluwer Health, Inc. All rights reserved.