Implantable cardioverter-defibrillator (ICD) tachyarrhythmia detection modification in response to detected pacing

Abstract

An implantable medical device includes a sensing module configured to obtain electrical signals from one or more electrodes, and a control module configured to process the electrical signals from the sensing module according to a tachyarrhythmia detection algorithm to monitor tachyarrhythmia. The control module detects initiation of a pacing string delivered by the second implantable medical device, determines a type of the detected pacing string, and modifies a tachyarrhythmia detection algorithm based on the detected type of pacing string.

Description

technical field [0001] The present application relates to medical devices, and more particularly, to implantable medical devices configured to detect and treat cardiac arrhythmias. Background technique [0002] ICD systems can be used to deliver high energy cardioversion or defibrillation shocks to a patient's heart to terminate detected tachyarrhythmias, such as atrial fibrillation or ventricular fibrillation. Cardioversion shocks are usually delivered synchronously with the detected R-wave when the fibrillation detection criteria are met. A defibrillation shock is typically delivered when fibrillation criteria are met, and the R-wave cannot be discerned from the signal sensed by the ICD. In addition, ICD systems can deliver high-energy cardioversion or defibrillation shocks to terminate certain types of ventricular tachycardia (VT). [0003] An ICD system typically includes an ICD coupled to one or more electrical leads placed within or attached to the heart. The electr...

AI Technical Summary

Problems solved by technology

A defibrillation shock is usually delivered when the fibrillation criteria are met, and the R-wave cannot be discerned from the signal sensed by the ICD

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