Atrial contraction detection by a ventricular leadless pacing device for atrio-synchronous ventricular pacing
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United States of America Patent
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Sep 8, 2020
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app pub date -
Jul 25, 2018
filing date -
Jul 25, 2014
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Abstract
A leadless pacing device (LPD) includes a motion sensor configured to generate a motion signal as a function of heart movement. The LPD is configured to analyze the motion signal within an atrial contraction detection window that begins an atrial contraction detection delay period after activation of the ventricle, and detect a contraction of an atrium of the heart based on the analysis of the motion signal within the atrial contraction detection window. If the LPD does not detect a ventricular depolarization subsequent to the atrial contraction, e.g., with an atrio-ventricular (AV) interval beginning when the atrial contraction was detected, the LPD delivers a ventricular pacing pulse.
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