Table 2.
Holter Parameter in HF patients and control.
| HF (N = 55) | Control (N = 97) | P value | |
|---|---|---|---|
| Time domain analysis | |||
| Mean RR | 740.59 (673.54 ~ 808.53) | 841.55 (737.90 ~ 907.57) | < 0.001 |
| SDRR | 29.08 (22.01 ~ 27.22) | 40.94 (33.11 ~ 48.21) | < 0.001 |
| pNN20 | 0.17 (0.049 ~ 0.32) | 0.32 (0.20 ~ 0.42) | < 0.001 |
| pNN50 | 0.012 (0.0035 ~ 0.052) | 0.029 (0.010 ~ .066) | 0.023 |
| Frequency domain analysis | |||
| VLF | 222.91 (128.43 ~ 382.66) | 477.44 (308.03 ~ 644.04) | < 0.001 |
| LF | 47.51 (7.79 ~ 123.42) | 157.34 (103.22 ~ 239.55) | < 0.001 |
| HF | 22.57 (10.39 ~ 53.15) | 35.84 (24.58 ~ 80.05) | 0.001 |
| LF/HF ratio | 2.77 (1.52 ~ 4.84) | 4.64 (2.77 ~ 5.88) | < 0.001 |
| Detrended fluctuation analysis | |||
| DFAα1 | 1.03 (0.78 ~ 1.23) | 1.25 (1.06 ~ 1.33) | < 0.001 |
| DFAα2 | 1.23 (0.78 ~ 1.23) | 1.16 (1.06 ~ 1.21) | 0.005 |
| Multiscale entropy | |||
| Slope 1–5 | − 0.0017 (− 0.048 ~ 0.024) | 0.038 (− 0.013 ~ 0.077) | < 0.001 |
| Scale 5 | 1.064 (0.86 ~ 1.14) | 1.39 (1.24 ~ 1.52) | < 0.001 |
| Area 1–5 | 3.88 (3.16 ~ 4.81) | 5.23 (4.47 ~ 5.62) | < 0.001 |
| Area 6–20 | 17.95 (15.44 ~ 20.31) | 21.33 (19.33 ~ 22.92) | < 0.001 |
Data were presented as Values are median (25th–75th percentile).
SDRR standard deviation of normal RR intervals, pNN20 percentage of the absolute change in consecutive normal RR interval exceeds 20 ms, pNN50 percentage of the absolute change in consecutive normal RR interval exceeds 50 ms, VLF very low frequency, LF low frequency, HF high frequency, DFA detrended fluctuation analysis.