Table 2 Time-domain parameters of HRV
VATS(n = 112) | THOR (n = 112) | P value | |
|---|---|---|---|
RR interval (ms) | |||
Pre-op 2 h | 620 ± 108 | 612 ± 130 | 0.43 |
Pre-op 4 h | 683 ± 109 | 708 ± 104 | 0.89 |
Post-op12h | 670 ± 118 | 706 ± 129 | 0.59 |
Post-op24h | 657 ± 108 | 648 ± 132 | 0.79 |
SDNN (ms) | |||
Pre-op 2 h | 35 ± 26 | 37 ± 28 | 0.81 |
Pre-op 4 h | 50 ± 37 | 48 ± 37 | 0.12 |
Post-op12h | 61 ± 43 | 55 ± 31 | 0.51 |
Post-op24h | 63 ± 42 | 58 ± 33 | 0.77 |
rMssD (ms) | |||
Pre-op 2 h | 31 ± 26 | 33 ± 36 | 0.79 |
Pre-op 4 h | 42 ± 60 | 38 ± 58 | 0.08 |
Post-op12h | 43 ± 41 | 36 ± 53 | 0.81 |
Post-op24h | 51 ± 39 | 45 ± 56 | 0.76 |
pNN50% | |||
Pre-op 2 h | 2.1 ± 4.8 | 2.3 ± 5.5 | 0.66 |
Pre-op 4 h | 3.8 ± 3.1 | 3.2 ± 5.6 | 0.73 |
Post-op12h | 3.5 ± 5.2 | 2.6 ± 5.7 | 0.41 |
Post-op24h | 3.9 ± 5.9 | 2.7 ± 6.6 | 0.32 |