Blaser et al reported factors predictive of intra-abdominal hypertension in a critically-ill patient. The authors are from multiple institutions in Europe, Australia and the United States.
Patient selection: critically-ill
Intra-abdominal hypertension is associated with a mean intra-abdominal pressure >= 12 mm Hg.
Parameters on the day of admission:
(1) body mass index (BMI) in kg per square meters
(2) APACHE II score
(3) abdominal distention
(4) bowel sounds
(5) PEEP in cm H2O
(6) constant
Parameter
Finding
OR
beta-coefficient
BMI
< 27
1
0
>= 27
1.937
0.661
APACHE II
< 18 points
1
0
>= 18 points
2.768
1.018
abdominal distention
no
1
0
yes
3.191
1.160
bowel sounds
yes
1
0
no
1.731
0.5487
PEEP
< 7 cm H2O
1
0
>= 7 cm H2O
2.339
0.8497
constant
0.276
-1.287
value of X =
= SUM(all of the beta coefficients)
probability of intra-abdominal hypertension =
= 1 / (1 + EXP((-1) * X))
Additional factors associated with intra-abdominal hypertension:
(1) mechanical ventilation
(2) positive fluid balance after day 1
To read more or access our algorithms and calculators, please log in or register.