High quality manual cardiopulmonary resuscitation (CPR) with minimal delays has been shown to improve outcomes following out-of-hospital cardiac arrest (OHCA). There are concerns that the quality of CPR can diminish over time and as little as 1 minute of CPR can lead to fatigue and deviation from the current recommended rate and depth of compressions. With this in mind, a mechanical device to provide chest compressions at a constant rate, depth and without tiring has considerable theoretical benefits to patients, yet clinical equipoise remains about the role for this treatment modality. In this podcast, we discuss and critically appraise 2 randomised controlled trials (RCTs) set out to answer exactly that question and give our take on the role for mechanical CPR devices in the future Hope you enjoy and feel free to leave any feedback below! Rob References  Mechanical versus manual chest compression for out-of-hospital cardiac arrest (PARAMEDIC): a pragmatic, cluster randomised controlled trial. Perkins GD. Lancet. 2015 Mechanical chest compressions and simultaneous defibrillation vs conventional cardiopulmonary resuscitation in out-of-hospital cardiac arrest: the LINC randomized trial. Rubertsson S. JAMA. 2014