Variable

NonVT group (n = 48)

VT group (n = 22)

P


DC (ms)

5.62 ± 1.75

4.13 ± 1.72

0.036

AC (ms)

5.82 ± 1.84

4.76 ± 1.69

0.040

SDNN (ms)

78.7 ± 22.1

68.2 ± 19.8

0.041

SDANN (ms)

68.7 ± 11.0

58.5 ± 10.5

0.043

rMSSD (ms)

21.3 ± 8.2

14.6 ± 6.2

0.045

LF (ms^{2})

1152.2 ± 440.5

1250.2 ± 408.6

0.068

HF (ms^{2})

221.5 ± 34.1

210.8 ± 27.6

0.071

LF/HF ratio

5.1 ± 2.0

5.9 ± 2.5

0.070

 Data presented as the mean ± standard deviation
 AC acceleration capacity of the heart rate, DC deceleration capacity of the heart rate, HF highfrequency power, LF lowfrequency power, rMSSD the root mean square value of the standard deviations of the successive differences between adjacent normal RR intervals in the whole 24h period, SDANN the standard deviation of the average normal RR intervals in all 5min segments, SDNN the standard deviation of all normal RR intervals, VT ventricular tachycardia