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Table 3 BMI and IAP values in regard to the type of surgery

From: Effects of zero reference position on bladder pressure measurements: an observational study

Type of surgery

BMI (kg/m2)

IAP (mmHg)

   

MAL

SP

p value

CI (95%)

Emergency (n = 55)

22.1 ± 2.1

7.4 ± 1.9

5.4 ± 2.0

< 0.0001b

1.5-2.4

Elective

Bariatric (n = 24)

42.4 ± 10.0

12.1 ± 0.8

10.0 ± 1.3

< 0.0001b

1.5-2.6

 

Non-bariatric (n = 21)

23.1 ± 2.5

7.1 ± 2.7

5.4 ± 2.4

0.002b

0.7-2.6

 

Total (n = 45)

30.5 ± 18.1a

9.8 ± 3.1

7.8 ± 2.9

< 0.0001b

1.6-2.4

  1. aMedian ± IQR; bTwo-sample paired t test;cWilcoxon signed-rank test; BMI, body mass index; IAP, intra-abdominal pressure; MAL, midaxillary line; SP, symphysis pubis.