Synchronization of defibrillation and chest compressions

Abstract

A resuscitation system for use by a rescuer for resuscitating a patient having a ventricular arrhythmia, comprising circuitry and processing configured for detection of chest compression / phase timing information indicative of the start of the decompression phase, circuitry and processing configured for delivery of eletromagnetic therapy for the termination of ventricular arrhythmias, wherein the circuitry and processing for the delivery of electromagnetic therapy utilizes the chest compression phase timing information to initiate delivery of the electromagnetic therapy within 300 milliseconds of the start of the decompression phase.

Description

[0001] cross reference [0002] This application claims priority to US Application Serial No. 61 / 001,347, filed November 1, 2007. technical field [0003] The present invention relates to the field of medical devices for cardiopulmonary resuscitation (CPR) and defibrillation, and more particularly to the synchronization of defibrillation shocks with chest compression cycles. Background technique [0004] There are many different types of abnormal heart rhythms, some of which can be treated with defibrillation therapy ("shockable rhythm") and some of which cannot be treated with defibrillation therapy ("non-shockable rhythm") . For example, most ECG rhythms that produce significant cardiac output are considered non-shockable (examples include normal sinus rhythm, certain bradycardias, and sinus tachycardia). There are also several abnormal ECG rhythms that do not result in substantial cardiac output but are still considered non-shockable because defibrillation therapy usual...

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