Adaptive confirmation of treatable arrhythmia in implantable cardiac stimulus devices

Abstract

Methods and devices for adjusting therapy delivery decisions in an implantable cardiac stimulus device by observing cardiac activity following an initial identification of a treatable condition. In some examples, cardiac activity that appears benign is quantified and a therapy confirmation threshold is adjusted according to how much apparently benign cardiac activity is seen after an initial identification of a treatable condition. In other examples, a new threshold is applied following the initial identification of treatable condition, removing historical data preceding the initial identification from subsequent therapy delivery decisions.

Description

[0001] related application [0002] This application claims the benefit and priority of U.S. Provisional Patent Application No. 61 / 221,316, entitled CONFIRMATION OF TREATABLE ARRHYTHMIA IN IMPLANTABLE CARDIAC STIMULUS DEVICES, filed June 29, 2009, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates generally to an implantable medical device system for sensing and analyzing cardiac signals. More particularly, the present invention relates to an implantable medical device that analyzes cardiac signals to classify cardiac activity as likely benign or treatable. Background technique [0004] An implantable cardiac stimulation device (ICSD) typically senses cardiac electrical signals in an implantee and uses the sensed signals to classify the implanted patient's heart rhythm as normal / benign or treatable / malignant. Exemplary treatable cardiac arrhythmias may include ventricular fibrillation and / or ventricula...

AI Technical Summary

Problems solved by technology

Thus, once a treatable condition is identified, there is a charging period corresponding to preparing the device to deliver therapy

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