Key result
An optimal single-pulse stimulus based on a sinoatrial model effectively induced heartbeat recovery for sudden cardiac arrest while reducing delivered energy by 91% compared to a conventional pulse.
Effect estimate: 91% reduction in delivered energy
A novel optimal single-pulse stimulus design based on a sinoatrial computational model demonstrates the potential to reduce pacemaker energy delivery by 91%, which could prolong battery life and reduce patient discomfort.
May lower energy needs for arrest pacing in animals; leaves open human translation and safety.
This study designs an optimal single-pulse stimulus in pacemakers to treat sudden cardiac arrest, while minimizing the pulse amplitude and reducing the delivered energy. Based on the Yanagihara, Noma, and Irisawa (YNI) model that describes the potential behavior of a sinoatrial node in a heart, it develops the frequency entrainment between irregular YNI-response and optimal single-pulse. This study derives the minimum amplitude of the optimal single-pulse for successful entrainment. Simulation results confirm that the proposed optimal single pulse is effective to induce rapid response of sudden cardiac arrest for heartbeat recovery, while a reduction in delivered energy of 91%, comparing with conventional pulse. This study will be helpful not only for the treatment of sudden cardiac arrest but also for prolonging battery longevity and reducing the stimuli pain on patients with implantable medical devices.
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Shi et al. (2011) studied Sudden cardiac arrest. Optimal single-pulse stimulus vs. Conventional pulse was evaluated on Delivered energy reduction and successful entrainment (91% reduction in delivered energy). An optimal single-pulse stimulus based on a sinoatrial model effectively induced heartbeat recovery for sudden cardiac arrest while reducing delivered energy by 91% compared to a conventional pulse.
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