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Table 1 Patient baseline characteristics

From: Pupil maximum constriction velocity predicts post-induction hypotension in patients with lower ASA status: a prospective observational study

  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
  1. BMI Body mass index, ASA American Society of Anesthesiologists physical status, \(Decrease\ in\ MAP=\left(\frac{Baseline\ MAP- Minimum\ MAP}{Baseline\ MAP}\right)\times 100\%\)  
  2. \(Percentage\ change\ in\ HR=\left(\frac{Baseline\ HR- HR\ at\ minimum\ MAP}{Baseline\ HR}\right)\times 100\%\)  
  3. Normally distributed results were reported as means ± standard deviation (\(\overline{x}\) ± s), while non-normally distributed data were reported as the median [interquartile range]. Categorical data were reported as numbers (%)