Lyon, RichardGowens, PaulEgan, GerryAndrews, PeterClegg, Gareth2021-11-252021-11-252011-03-01Lyon, R. et al, 2011. Back to basics—ECG impedance analysis for CPR quality control and feedback after out-of-hospital cardiac arrest: a pilot study. Emergency Medicine Journal, 28 (3), 237-238.1472-02051472-021310.1136/emj.2010.108597.3http://hdl.handle.net/20.500.12417/1209Out-of-hospital cardiac arrest (OHCA) remains a leading cause of mortality and severe neurological disability. Survival from OHCA depends on good quality cardiopulmonary resuscitation from EMS personnel. The ‘time on the chest’ and interruption time for defibrillation have recently been shown to be pivotal to survival. Electrocardiograph impedance analysis software allows retrospective quality control and feedback to EMS crews after a resuscitation attempt. Whilst this technique has been used by several EMS services worldwide, routine use and acceptance has yet to be established. https://emj.bmj.com/content/28/3/237.3 This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. http://creativecommons.org/licenses/by-nc/4.0/ DOI http://dx.doi.org/10.1136/emj.2010.1-8597.3enEmergency Medical ServicesHeart ArrestResuscitationElectrocardiogram (ECG)Quality Measures