Vu et al developed several equations for predicting the risk of complications after abdominoplasty. These can help to identify a patient who may benefit from more aggressive management. The authors are from Northwestern University and the University of Illinois.
Patient selection: abdominoplasty
Outcomes: superficial surgical site infection (SSI); deep or organ-space surgical site infection (SSI); wound dehiscence
Parameters:
(1) age in years
(2) body mass index (BMI) in kg per square meter
(3) gender
(4) diabetes mellitus
(5) smoker within the past year
(6) pulmonary comorbidity
(7) hypertension requiring medication
(8) ASA class
|
Parameter |
Finding |
beta coefficient for superficial SSI |
beta coefficient for deep or organ-space SSI |
|
age |
|
(0.013*(age)) |
(0.024*(age)) |
|
BMI |
|
(0.088*(BMI)) |
(0.061*(BMI)) |
|
gender |
male |
0.007 |
-0.081 |
|
|
female |
0 |
0 |
|
diabetes |
no |
0 |
0 |
|
|
yes |
0.264 |
0.569 |
|
smoker |
no |
0 |
0 |
|
|
yes |
0.272 |
1.122 |
|
pulmonary comorbidity |
no |
0 |
0 |
|
|
yes |
-0.007 |
0.467 |
|
hypertension |
no |
0 |
0 |
|
|
yes |
0.122 |
-0.266 |
|
ASA class |
1 or 2 |
0 |
0 |
|
|
>= 3 |
0.257 |
1.135 |
|
Parameter |
Finding |
beta coefficient for wound dehiscence |
|
age |
|
(0.007*(age)) |
|
BMI |
|
(0.145 *(BMI)) |
|
gender |
male |
0.1 |
|
|
female |
0 |
|
diabetes |
no |
0 |
|
|
yes |
-0.614 |
|
smoker |
no |
0 |
|
|
yes |
0.443 |
|
pulmonary comorbidity |
no |
0 |
|
|
yes |
0.196 |
|
hypertension |
no |
0 |
|
|
yes |
-0.879 |
|
ASA class |
1 or 2 |
0 |
|
|
>= 3 |
0.952 |
X for superficial SSI =
= SUM(points for all 8 parameters) - 7.178
probability of superficial SSI =
= 1/(1+EXP((-1)*X))
Y for deep SSI =
= SUM(points for all 8 parameters) - 7.651
probability of deep SSI =
= 1/(1+EXP((-1)*Y))
Z for wound dehiscence =
= SUM(points for all 8 parameters) - 9.600
probability of wound dehiscence =
= 1/(1+EXP((-1)*Z))
Specialty: Infectious Diseases, Surgery, general
