3 results about "Atrial rate" patented technology

A medical device having a motion sensor is configured to sense a motion signal, generate ventricular pacing pulses in a non-atrial tracking ventricular pacing mode and detect atrial event signals from the motion signal during the non-atrial tracking ventricular pacing mode. The medical device may be configured to determine atrial event intervals from the detected atrial event signals, determine a frequency distribution of the determined atrial event intervals and determine an atrial rate based on the frequency distribution of the detected atrial event intervals.

An implantable medical device implantable in a human or animal heart that carries out the following steps during its operation: a) continuously detecting a cardiac electric signal; b) starting a coagulation timer if the detected cardiac electric signal is indicative for an atrial tachycardia; c) keeping the coagulation timer active during a temporary loss of the cardiac electric signal; and d) stopping the coagulation timer, if the following criteria are fulfilled: i) an amplitude of the cardiac electric signal of a plurality of cardiac intervals being close in time exceeds a presettable significance threshold, and ii) an atrial rate calculated from the plurality of cardiac intervals being close in time is below a predefinable threshold rate indicative for atrial tachycardia, or e) keeping the coagulation timer active for a predefined time period, if the criteria are not fulfilled.

Disclosed herein are implantable medical devices and systems, and methods for used therewith, that selectively perform atrial pacing at an atrial pacing rate that is faster than an intrinsic atrial rate of a patient while the patient is experiencing an atrial tachycardia or atrial fibrillation and the intrinsic atrial rate of the patient is within the specified range, to attempt to convert the arrhythmia to a normal sinus rhythm.