From: Treatment outcomes of postoperative mediastinitis in cardiac surgery; negative pressure wound therapy versus conventional treatment
El Oakley Class
VAC therapy
Conventional treatment
n
%
I
5
10.6
4
9.3
II
2
4.3
3
7
IIIA
17
36.1
13
30.2
IIIB
22
46.8
21
49
IVA
1
2.1
2.3
IVB
-
0
V