Table 1 Patient baseline characteristics
|  | PIH (n = 31) | no-PIH (n = 30) | P |
|---|---|---|---|
Age overall (years) | 42 [29–51] | 31 [24–36] | 0.007 |
 18–24 | 3 (9.7) | 8 (26.7) |  |
 25–34 | 8 (25.8) | 13 (43.3) |  |
 35–44 | 6 (19.4) | 6 (20.0) |  |
 45–54 | 12 (38.7) | 2 (6.7) |  |
 55–64 | 2 (6.5) | 1 (3.3) |  |
Gender (M/F) | 15/16 | 17/13 | 0.517 |
BMI, kg/m^2 | 23.06 ± 3.11 | 23.78 ± 3.64 | 0.409 |
ASA (I/II) | 3/28 | 3/27 | 1.000 |
History of smoking | 7 (22.6) | 9 (30.0) | 0.510 |
History of drinking | 8 (25.8) | 7 (23.3) | 0.823 |
Sinus bradycardia | 6 (19.4) | 3 (10) | 0.504 |
Sinus arrhythmia | 1 (3.2) | 0 (0) | 1.00 |
Left ventricular high voltage | 1 (3.2) | 1 (3.3) | 1.00 |
Aortic sclerosis | 3 (9.7) | 0 (0) | 0.248 |
Red blood cell, 10^12/L | 4.47 [3.98–4.97] | 4.40 [4.21–4.91] | 0.708 |
Hemoglobin, g/L | 136.0 ± 16.9 | 136.3 ± 15.8 | 0.949 |
Hematocrit | 0.404 [0.368–0.442] | 0.402 [0.373–0.431] | 0.708 |
Albumin, g/L | 42.0 ± 3.0 | 43.7 ± 3.4 | 0.046 |
Propofol, mg | 124 [110–140] | 141 [106–156] | 0.191 |
Sufentanil, μg | 19.0 [16.5–21.0] | 21.2 [16.0–23.0] | 0.157 |
Baseline MAP, mmHg | 97 ± 13 | 95 ± 11 | 0.470 |
Baseline HR, beats/min | 76 ± 11 | 75 ± 13 | 0.749 |
Decrease in MAP (%) | 34.9 ± 8.0 | 20.7 ± 7.1 | < 0.001 |
Percentage change in HR(%) | 13.9 ± 10.9 | 9.8 ± 18.3 | 0.598 |