Table 4 Measurements of HRV parameters and clinical signs of recruited patients
|  | No MACE within 72 h (N = 673) | MACE within 72 h (N = 29) | p |
|---|---|---|---|
Clinical signs | Â | Â | Â |
Glasgow Coma Scale | 15 (15 to 15) | 15 (15 to 15) | 0.001 |
Temperature (°C) | 36.4 (0.6) | 36.4 (0.5) | 0.871 |
Pulse rate (beats/minute) | 79 (17) | 86 (15) | 0.008 |
Respiratory rate (breaths/minute) | 18 (3) | 20 (5) | 0.010 |
Systolic BP (mmHg) | 142 (28) | 124 (31) | 0.001 |
Diastolic BP (mmHg) | 77 (15) | 67 (17) | 0.001 |
Oxygen saturation (%) | 98 (4) | 97 (4) | 0.469 |
Pain score | 2 (0 to 4) | 3 (0 to 5) | 0.358 |
HRV parameters | Â | Â | Â |
aRR (s) | 0.831 (0.171) | 0.723 (0.139) | 0.001 |
STD (s) | 0.038 (0.028) | 0.034 (0.020) | 0.657 |
avHR (beats/minute) | 75.545 (15.862) | 86.122 (15.927) | 0.001 |
sdHR (beats/minute) | 3.618 (2.735) | 4.328 (2.886) | 0.099 |
RMSSD (s) | 0.037 (0.039) | 0.039 (0.307) | 0.376 |
pNN50 (%) | 7.294 (12.617) | 7.978 (9.695) | 0.198 |
NN50 (count) | 23 (41) | 31 (44) | 0.220 |
Triangular index | 3.009 (1.233) | 2.481 (0.969) | 0.025 |
TINN | 0.134 (0.086) | 0.105 (0.069) | 0.086 |
LF power (ms2) | 0.128 (0.074) | 0.106 (0.092) | 0.024 |
HF power (ms2) | 0.125 (0.075) | 0.139 (0.080) | 0.303 |
Total power (ms2) | 0.489 (0.110) | 0.434 (0.177) | 0.054 |
LF power norm (n.u.) | 51.173 (20.535) | 40.947 (22.966) | 0.020 |
HF power norm (n.u.) | 48.827 (20.535) | 59.053 (22.996) | 0.020 |
LF/HF | 1.641 (1.869) | 1.018 (0.910) | 0.021 |