A randomised controlled trial comparing sternal wires with sternal cabling for prevention of deep sternal wound infection in patients undergoing cardiac surgery

Background Deep sternal wound infection is a devastating complication of cardiac surgery. In the current era of increasing patient co-morbidity, newer techniques must be evaluated in attempts to reduce the rates of deep sternal wound infection. Methods A randomised controlled trial comparing sternal closure with traditional sternal wires in figure-8 formation with the Pioneer cabling system [Registered Trademark] from Medigroup after adult cardiac surgery was performed. Results 273 patients were enrolled with 137 and 135 patients randomised to sternal wires and cables group, respectively. Baseline characteristics between the two groups were well balanced. Deep sternal wound infection occurred in 0.7% of patients in the wires group and 3.7% of patients in the cables group (absolute risk difference = -3.0%, 95% confidence interval: -7.7% to 0.9%; p=0.12). Patients in the cables group were extubated slightly earlier than the patients in the sternal wires group postoperatively (9.7 vs. 12.8 hours; p=0.03). There was, however, no significant difference in hospital and follow-up pain scores or analgaesia requirements. Conclusions The Pioneer sternal cabling system appears to facilitate early extubation after adult cardiac surgery, but it does not reduce the rate of deep sternal infection.