Skip to main content

Table 4 Predictive values of pupil diameter variations for insufficient analgesia (RASS increase ≥1 point)

From: Pupillary reflex measurement predicts insufficient analgesia before endotracheal suctioning in critically ill patients

 

10 mA tetanic stimulation

20 mA tetanic stimulation

40 mA tetanic stimulation

Best cutoff for pupil diameter variation (%)

1

5

13

Sensitivity

0.67 (0.52 – 0.81)

0.72 (0.58 – 0.86)

0.78 (0.65 – 0.91)

Specificity

0.73 (0.59 – 0.87)

0.77 (0.64 – 0.90)

0.86 (0.76 – 0.97)

Positive predictive value

0.67 (0.52 – 0.81)

0.72 (0.58 – 0.86)

0.82 (0.71 – 0.94)

Negative predictive value

0.73 (0.59 – 0.87)

0.77 (0.64 – 0.90)

0.83 (0.71 – 0.94)

Youden index

0.39

0.49

0.68

  1. All data except Youden index were 95% confidence interval. RASS Richmond Agitation Sedation Scale.