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Influence of pacemaker timing on detection of atrial tachycardias and signals of different frequencies

Jan Morava, Aneta Lhotová, Aleš Richter

. 2021 ; 51 (1-4) : 49-52.

Language English Country Czech Republic

Document type Review, Research Support, Non-U.S. Gov't

Persistent link   https://www.medvik.cz/link/bmc23006625

The pacemaker (PCM) timing is a basic feature of the stimulation system. The device tries to bring the function of the heart with the conduction system disorder as close as possible to its original physiologically correct state. The main function of the PCM is a bradyarrhythmia therapy. Current devices are programmable and can adequately respond to any fluctuations in a heart rate from required values. Common parts of these devices are algorithms for the atrial tachycardias detection such as atrial fibrillation. The interpretation of a fast heart rate is affected by the pacemaker timing and different refractory intervals, especially in the case of tachycardias of lower frequencies. In this paper we discuss the effect of different atrial event frequencies to the adequate PCM response according to the timing behavior of the device. We prove our hypotheses by an experimental verification on the phantom of the pacemaker system by the in vitro method. The obtained results are compared with the case report from clinical practice. We set limit intervals for the detection of atrial tachycardias and verify the rate of the activation of the PCM program response for different frequencies. Finally, we discuss the behavior of cardiac implantable electronic devices (CIEDs) during the detection of signals of higher frequencies.

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$a The pacemaker (PCM) timing is a basic feature of the stimulation system. The device tries to bring the function of the heart with the conduction system disorder as close as possible to its original physiologically correct state. The main function of the PCM is a bradyarrhythmia therapy. Current devices are programmable and can adequately respond to any fluctuations in a heart rate from required values. Common parts of these devices are algorithms for the atrial tachycardias detection such as atrial fibrillation. The interpretation of a fast heart rate is affected by the pacemaker timing and different refractory intervals, especially in the case of tachycardias of lower frequencies. In this paper we discuss the effect of different atrial event frequencies to the adequate PCM response according to the timing behavior of the device. We prove our hypotheses by an experimental verification on the phantom of the pacemaker system by the in vitro method. The obtained results are compared with the case report from clinical practice. We set limit intervals for the detection of atrial tachycardias and verify the rate of the activation of the PCM program response for different frequencies. Finally, we discuss the behavior of cardiac implantable electronic devices (CIEDs) during the detection of signals of higher frequencies.
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