Usability testing of a novel automated external defibrillator user interface: A pilot study

High quality CPR in conjunction with early defibrillation can enhance survival outcomes following cardiac arrest. This usability study aimed to evaluate a novel prototype user interface of a public access defibrillator for the improvement of CPR during a simulated resuscitation attempt. Test candidates were asked to use the device in the absence of audible instructions, relying solely on the device membrane, to perform CPR chest compressions. The rate of the rescuer chest compression were then assessed and evaluated according to current resuscitation guidelines. All participants improved their rate of CPR within-test. All but one achieved the correct compression rate within 20 seconds. This study suggests that the device interface could potentially enhance real-time CPR quality during resuscitation attempts.