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Table 2 Results of multivariable logistic regression analyses for development of bradypnea

From: Risk factors for bradypnea in a historical cohort of surgical patients receiving fentanyl-based intravenous analgesia

 

Odds

95% CI

P value

Sexa

1.401

0.796–2.464

0.242

BMI

0.949

0.889–1.013

0.114

Total fluid balance

0.990 (/100 ml)

0.955–1.025

0.560

Liver dysfunction

2.918

1.329–6.405

0.008

Renal dysfunction

0.349

0.128–0.955

0.040

Hypertension

0.669

0.389–1.151

0.146

Smoking

0.236

0.075–0.735

0.013

Duration of anesthesia

0.995 (/10 min)

0.967–1.024

0.739

Fentanyl 0 h (ng/ml)

1.467

0.337–6.379

0.610

Fentanyl 1 h (ng/ml)

0.442

0.052–3.780

0.456

  1. BMI body mass index, Fentanyl 0 h effect site concentrations of fentanyl at the end of surgery, Fentanyl 1 h effect site concentrations of fentanyl 1 h postoperatively
  2. aMale sex is defined as the reference level
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