CARDIAC PACING WITH GOVERNOR

摘要

A leadless cardiac pacemaker includes a housing and two or more electrodes secured relative to the housing. A controller is configured to receive electrical signals from the two or more electrodes indicative of a heartbeat of the patient's heart and determine a first measure of cardiac load based at least in part on a delay between the Q or R feature and the T feature for the heartbeat. An accelerometer is configured to sense an activity level of the patient and the controller is configured to determine a second measure of cardiac load based at least in part on the activity level of the patient. A pacing rate is based at least in part upon the first measure of cardiac load, with the second measure of cardiac load used as a governor to the determined pacing rate.

主权项

1. A leadless cardiac pacemaker (LCP) configured to sense and pace a patient's heart, the LCP comprising:
a housing; two or more electrodes secured relative to the housing and configured to receive electrical signals emanating from the patient's heart; a controller coupled to the two or more electrodes, the controller configured to receive electrical signals from the two or more electrodes indicative of a heartbeat of the patient's heart, the received electrical signals including one or more of a Q, an R, and an S feature, as well as a T feature of a QRST complex, the controller configured to determine a first measure of cardiac load based at least in part on a delay between the Q or R feature and the T feature for the heart beat; an accelerometer configured to sense an activity level of the patient, the controller configured to determine a second measure of cardiac load based at least in part on the activity level of the patient; the controller further configured to determine a pacing rate based at least in part upon the first measure of cardiac load and to pace the patient's heart in accordance with the determined pacing rate; and the controller further configured to utilize the second measure of cardiac load to act as a governor to the determined pacing rate.