Table 2 Continuous 24-h ECG monitoring and functional tests before the procedure.

From: Effect of age on clinical impact and mid-term denervation in patients undergoing cardioneuroablation

 

< 50 years (n = 17)

≥ 50 years (n = 33)

p-value

Minimum HR (bpm)

41.3 ± 9.4

41.6 ± 9.5

0.942

Median HR (bpm)

73.6 ± 19.7

69.6 ± 11.8

0.428

Maximum HR (bpm)

124.2 ± 24.6

112.1 ± 21.4

0.127

SDNN 24 h (ms)

165.5 ± 64.6

146.0 ± 35.6

0.225

RMSSD (ms)

43 (28–72)

26.5 (21.3–37)

0.03

PNN50 (%)

12 (8–32)

5 (3–15)

0.051

VLF (ms2)

3553 (2509–4900)

1925 (1236–2783)

0.023

LF (ms2)

1139 (1032–1308)

469 (358–1039)

0.011

HF (ms2)

333 (272–599)

116 (93–211)

0.005

Relative HR variation with the Valsalva test (%)

53.7 (31.7–72.6)

24.4(12.9–34.1)

0.016

Relative HR variation with the deep inspiration test (%)

31.5 ± 15.2

23.0 ± 25.3

0.291

Relative HR variation with the atropine test (%)

60.0 (42.9–90)

62.6 (48.3–75.6)

0.944

Maximum HR with the atropine test (bpm)

117.9 ± 20.3

102.4 ± 22.0

0.037

  1. HR heart rate, SDNN standard deviation of NN intervals, RMSSD root mean square of successive RR interval differences, PNN50 percentage of successive RR intervals that differ by > 50 ms, VLF absolute power of the very-low-frequency band (0.0033–0.04 Hz), LF absolute power of the low-frequency band (0.04–0.15 Hz), HF absolute power of the high-frequency band (0.15–0.4 Hz).