[Effect of radio frequency catheter ablation on spectral parameters of heart rate variability in patients with paroxysmal supraventricular tachyarrhythmias].
OBJECTIVE
To assess effect of radio frequency catheter ablation (RFCA) on heart rate variability (HRV) in patients with supraventricular tachyarrhythmias (SVT).


METHODS
Spectral analysis of HRV on 5-minute ECG strips was carried out in 19 patients with SVT before and 2 days after RFCA.


RESULTS
Both total and high frequency power significantly decreased (p<0,05) after RFCA in supine and orthostatic positions. Significant decrease of low frequency power occurred after RFCA in orthostatic position.


CONCLUSIONS
In patients with SVT RFCA alters autonomic regulation of chronotropic function of the heart. Sympathetic and parasympathetic influences on the chronotropic function of the heart are attenuated in early period after the procedure.
Chikhirev
O A
OA
Cardiology Research Complex, ul. Tretiya Cherepkovskaya 15a, 121552 Moscow, Russia.
Mazygula
E P
EP
Tadzhieva
N I
NI
Lukoshkova
E V
EV
Sveshnikov
A V
AV
Maykov
E B
EB
Golitsyn
S P
SP
D000293:Adolescent; D000328:Adult; D017115:Catheter Ablation / Q000295:instrumentation*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013617:Tachycardia, Supraventricular / Q000628:therapy*