Atrial fibrillation detection

Abstract

An apparatus includes a sensing circuit configured to generate a sensed physiological signal representative of cardiac activity of a subject, and an arrhythmia detection circuit. The arrhythmia detection circuit is configured to monitor information corresponding to ventricular depolarization (V-V) intervals using the sensed physiological signal; determine a V-V interval distribution; determine a heart rate density index (HRDI) as a portion of samples of the V-V interval distribution corresponding to a V-V interval occurring most often in the distribution; and generate an indication of atrial fibrillation (AF) using the HRDI.

Description

[0001] priority claim [0002] This application claims the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Patent Application Serial No. 62 / 142,184, filed April 2, 2015, the entire contents of which are incorporated herein by reference. Background technique [0003] Mobile medical devices include implantable medical devices (IMDs), wearable medical devices, handheld medical devices, and other medical devices. Some examples of IMDs include cardiac function management (CFM) devices such as implantable pacemakers, implantable cardioverter-defibrillators (ICDs), subcutaneous implantable cardioverter-defibrillators (S-ICDs), Cardiac resynchronization therapy devices (CRTs) and devices comprising combinations of these capabilities. These devices may be used to treat a patient or subject using electrical or other therapy, or to assist a physician or caregiver in patient diagnosis by internally monitoring the patient's condition. [0004] Some implantable medical dev...

AI Technical Summary

Problems solved by technology

[0007] CFM devices may be implantable, but in some cases may not include specialized atrial sensing capabilities

Additionally, some diagnostic-only implantable, wearable, and handheld devices do not include dedicated atrial sensing capabilities

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