Arrhythmia

The occurrence of major arrhythmic events in patients with arrhytmogenic right ventricular cardiomyopathy is associated with a reduced SDNN in the time domain and reduced LF power in the frequency domain. Just prior to an arrhythmogenic event the LF/ HF ratio increases. Because ventricular arrhythmias can induce pH changes and cause reentrant tachycardia, in which the reentry circuit returns to the atrium via accessory AV connections, changes in signaling intrinsic to the sinoatrial node may cause changes in HRV. Moreover, patients with a transplanted heart (i.e., the autonomic nervous system is not intact) have respiratory sinus arrhythmia heart rate fluctuations similar to those in healthy subjects

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Last date updated on September, 2024