Background and Aim: Postoperative infection is the most common surgical complications and surgical wound infection is one of the most important nosocomial infections. The purpose of the study is to investigate the effect of silver dressing in preventing of sternal incision infection in coronary bypass surgery.

Materials and Methods: It's a clinical trial done on two groups, the control and the case. We used normal sterile dressing without silver for the control group and sterile dressing with silver for the case group while the rest of the conditions were the same for the both groups.

Results: Amongst 62 patients in the control group %14.50 of the candidates were sternal culture due to inflammation and secretions. Staphylococcus aurous was observed in 5 patients, Enterococcus in 4 patients and yeast in one patient in the control group. %70.07 had diabetes and %79.3 was suffering from high triglycerides. About medicines (drugs) there were %60 of them insulin receptor, %24.1   Osivx receptor, all patients receiving aspirin and %50 were receiving Plavix. In the 62 patients in the experimental group, %4.83 of the candidates was sternum culture due to inflammation and secretions.  Aurous and Enterococcus were seen in 2 and 1 respectively.  There was no yeast. %68.05 had diabetes and %79.2 had hypertriglyceridemia. There was %42.6 were insulin receptor through injection.  %27.8 Osvix, %81.5 Aspirin and %50 of them Plavix consumers.

Conclusion: Comparing the results of two groups, we found that the results were almost identical and there were no significant differences between them and both had similar and acceptable efficiency.