Skip to main content

Table 2 Pupil measurement comparisons

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

BPD, mm

3.946 [3.415–4.387]

4.166 [3.679–4.752]

0.286

MPD, mm

3.248 [2.756–3.709]

3.300 [2.998–3.538]

0.931

PCL, s

0.200 [0.167–0.233]

0.184 [0.133–0.300]

0.483

PCT, s

0.433 [0.400–0.500]

0.417 [0.392–0.500]

0.618

ACV, mm/s

1.696 ± 0.577

2.118 ± 0.474

0.003

MCV, mm/s

2.736 ± 1.128

3.855 ± 0.882

< 0.001

1/MCV, s/mm

0.372 [0.302–0.476]

0.260 [0.224–0.314]

< 0.001

CR, %

82.841 ± 5.903

78.602 ± 4.762

0.003

  1. BPD Baseline Pupil Diameter, MPD Minimum Pupil Diameter, PCL Pupil Constriction Latency, PCT Pupil Constriction Time, ACV Average Constriction Velocity, \(ACV=\frac{BPD- MPD}{PCT}\); MCV Maximum Constriction Velocity, 1/MCV the reciprocal of MCV, CR Constriction Ratio (%),\(CR=\left(\frac{MPD}{BPD}\right)\times 100\%\)
  2. 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 (%)