Patient selection: open revascularization (lower extremity arterial bypass or thromboendarterectomy)
Rate of SSI: 11% at 30 days
Risk factors for SSI with odds ratio 1.5 to 2.1):
(1) obesity (odds ratio 2.1)
(2) dialysis (odds ratio 1.5)
Risk factors for SSI with odds ratio 1.2 to 1.4:
(1) female (odds ratio 1.4)
(2) operation time > 4 hours (odds ratio 1.4)
(3) COPD (odds ratio (1.2)
(4) preoperative hyponatremia (odds ratio 1.2)
Four of these risk factors involve comorbid conditions. Notably diabetes, steroid therapy and immunosuppression are not listed as risk factors.
A patient who developed an SSI was at risk for:
(1) prolonged hospital stay (> 10 days)
(2) graft loss at 30 days
(3) re-operation
