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METHODS AND APPARATUS FOR PREDICTING ACUTE RESPONSE TO CARDIAC RESYNCRONIZATION THERAPY AT A GIVEN STIMULATION SITE
METHODS AND APPARATUS FOR PREDICTING ACUTE RESPONSE TO CARDIAC RESYNCRONIZATION THERAPY AT A GIVEN STIMULATION SITE
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机译:预测给定刺激部位对心脏再同步治疗的急性反应的方法和装置
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摘要
Response to cardiac resynchronization therapy is predicted for a given stimulation site so that an atrioventricular delay of an implantable device administering cardiac resynchronization therapy may be set to a proper amount. The first deflection of ventricular depolarization is measured, such as through a surface electrocardiogram or through an intracardiac electrogram measured by a lead positioned in the heart at the stimulation site. The maximum deflection of the ventricular depolarization is then measured by the lead positioned at the stimulation site. The interval of time between the first deflection and the maximum deflection of the ventricular depolarization is compared to a threshold to determine whether the stimulation site is a responder site. If the interval is larger than the threshold, then the site is a responder and the atrioventricular delay of the implantable device may be set to less than the intrinsic atrioventricular delay of the patient. Otherwise, the atrioventricular may be set to approximately equal the intrinsic atrioventricular delay.
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