Table 3:
Statistically significant differences in Groups A and B obtained from the analysis of HRV fluctuation A/N/D (Afternoon, Night, Day)-related parameters data from each different 5 min time periods examined together a day before operation
| HRV fluctuation of variables A/N/D | Group A (97 patients) |
Group B (19 patients) |
||||||
|---|---|---|---|---|---|---|---|---|
| Mean | Med | SD | P A/N/D | Mean | Med | SD | P A/N/D | |
| Mean RR A (s) | 0.71 | 0.69 | 0.1 | P <0.000001 | 0.76 | 0.77 | 0.08 | 0.13 |
| Mean RR N | 0.84 | 0.84 | 0.13 | 0.87 | 0.8 | 0.21 | ||
| Mean RR D | 0.77 | 0.75 | 0.14 | 0.8 | 0.79 | 0.15 | ||
| SDNN A (ms) | 0.04 | 0.03 | 0.02 | 0.037 | 0.04 | 0.04 | 0.03 | 0.17 |
| SDNN N | 0.03 | 0.03 | 0.02 | 0.04 | 0.04 | 0.02 | ||
| SDNN D | 0.04 | 0.03 | 0.03 | 0.05 | 0.04 | 0.04 | ||
| Mean HR A (1/min) | 86.44 | 87.41 | 11.93 | P <0.000001 | 79.93 | 81.77 | 9.28 | 0.12 |
| Mean HR N | 73.4 | 72.02 | 11.54 | 72.39 | 75.09 | 14.44 | ||
| Mean HR D | 80.34 | 80.52 | 13.85 | 77.24 | 77.32 | 12.41 | ||
| STD A (1/min) | 4.37 | 3.95 | 2.14 | P <0.000001 | 4.54 | 4.14 | 2.41 | 0.073 |
| STD N | 2.95 | 2.56 | 1.67 | 2.92 | 2.97 | 1.64 | ||
| STD D | 4.33 | 3.32 | 2.77 | 4.45 | 3.69 | 2.76 | ||
| RMSSD A (ms) | 17.43 | 14.9 | 11.11 | 0.0023 | 21.77 | 17.4 | 14.69 | 0.15 |
| RMSSD N | 23.8 | 16.9 | 20.46 | 26.87 | 18.3 | 22.29 | ||
| RMSSD D | 21.7 | 17.4 | 16.26 | 30.19 | 22.3 | 20.28 | ||
| NN50 A | 11.27 | 4 | 19.27 | 0.39 | 16.13 | 4 | 20.67 | 0.40 |
| NN50 N | 23.92 | 3 | 49.95 | 20 | 3 | 36.05 | ||
| NN50 D | 19.56 | 3 | 31.47 | 28.53 | 8 | 35.87 | ||
| PNN50 A | 2.71 | 0.9 | 4.52 | 0.20 | 4.15 | 1.2 | 5.38 | 0.27 |
| PNN50 N | 7.38 | 0.8 | 14.34 | 7.25 | 0.8 | 13.12 | ||
| PNN50 D | 5.49 | 0.6 | 9.34 | 8.36 | 2.1 | 11.25 | ||
| VLF A (ms²) | 179 451.34 | 167 194 | 54 556.77 | P <0.000001 | 198 917.42 | 189 693 | 67 312.37 | 0.031 |
| VLF N | 255 509.44 | 242 323 | 86 048.62 | 286 984.82 | 228 393 | 138 516.47 | ||
| VLF D | 21 6279.88 | 195 958 | 82 345.08 | 235 150.13 | 230 719 | 86 430.96 | ||
| LF A (ms²) | 1201.52 | 1097 | 379.67 | P <0.000001 | 1418.2 | 1289 | 452.67 | 0.13 |
| LF N | 1637.68 | 1537.5 | 632.74 | 1996.27 | 1634 | 1011.17 | ||
| LF D | 1465.07 | 1309 | 642.97 | 1770.93 | 1347 | 1181.97 | ||
| HF A (ms²) | 275.77 | 254 | 86.69 | P <0.000001 | 309.95 | 316 | 108.52 | 0.038 |
| HF N | 441.08 | 380.5 | 227.6 | 510.71 | 421 | 276.34 | ||
| HF D | 369.49 | 309 | 234.1 | 419.67 | 344 | 193.75 | ||
| LF/HF A | 4.39 | 4.29 | 0.66 | 0.00009 | 4.26 | 4.09 | 0.55 | 0.63 |
| LF/HF N | 3.9 | 4.06 | 0.6 | 3.83 | 4.09 | 0.33 | ||
| LF/HF D | 4.17 | 4.18 | 0.62 | 3.65 | 4.02 | 0.83 | ||
| SD1 A (ms) | 12.34 | 11 | 7.79 | 0.0019 | 15.41 | 12.3 | 10.42 | 0.15 |
| SD1 N | 16.85 | 12 | 14.5 | 19.03 | 13 | 15.8 | ||
| SD1 D | 15.36 | 12.3 | 11.52 | 21.38 | 15.8 | 14.37 | ||
| SD2 A (ms) | 48.96 | 44.6 | 25.37 | 0.0056 | 58.47 | 50 | 34.65 | 0.27 |
| SD2 N | 44.39 | 38.1 | 27.43 | 47.11 | 51.7 | 31.32 | ||
| SD2 D | 54.37 | 43.9 | 34.19 | 65.28 | 47 | 49.91 | ||
| SD2/SD1 A | 4.65 | 4.2 | 2.43 | 0.00002 | 4.17 | 3.93 | 1.61 | 0.42 |
| SD2/SD1 N | 3.5 | 2.93 | 1.96 | 3.16 | 2.52 | 1.76 | ||
| SD2/SD1 D | 4.34 | 3.83 | 2.7 | 3.24 | 2.61 | 2.19 | ||
A: means period time afternoon a day before operation; N: data from Holter by night; D: day early morning in day of operation, before operation.