چکیده (انگلیسی):

Background: Delayed primary (DPC) and primary (PC) wound closures have been
applied in ruptured appendicitis, but results were controversial. This study aims at comparing
the rate of superficial surgical site infection (SSI) in ruptured appendicitis between DPC and PC.
Methods: A retrospective cohort of ruptured appendicitis was conducted between October 2006
and November 2009. Demographic, operative findings and postoperative infection data were
retrieved. The superficial SSI rates between groups were compared using an exact test. An odds
ratio of SSI was then estimated.
Results: One-hundred and twenty eight patients with ruptured appendicitis were eligible and their
data were retrieved; 115 (90%) patients had received DPC and 13 (10%) patients had received PC. The
SSI rate was much lower in PC patients than in DPC patients, i.e., 7.7% [95% confidence interval (CI):
0.02, 36.0] versus 27.8% (95% CI: 19.9, 37.0), respectively. There was an approximately 72%lower risk
of SSI in the PC group than in the DPC group, but this did not reach statistical significance (p Z0.18).
Conclusion: Our study suggested that PC does not increase risk of SSI in low SSI risk patients with
ruptured appendicitis. DPC should not be routinely done.