Improved simulated ventilation with a novel tidal volume and peak inspiratory pressure controlling bag valve mask: A pilot study

•Hyperventilation during resuscitation can be dangerous to patients.•This study of emergency medicine (EM) residents using traditional Bag Valve Masks (BVMs) showed high tidal volume (Vt), pressures, and minute ventilations with a traditional BVM in simulated pediatric and adult patients.•The novel Butterfly BVM generally demonstrated more accurate and appropriate Vt, pressures, and minute ventilations in this study.•EM residents found the Butterfly BVM easy to use and preferred it to the traditional BVM.