2 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.