Relationship between operative time and complication rate after endovascular interventions in patients with PAOD

Objective: The relationship between operative time and postoperative complications in patients with endovascular revascularization for intermittent claudication (IC) and critical limb ischemia (CLI) was analyzed. Material and method: Retrospective data from 398 patients who underwent an endovascular procedure for IC (n= 274) or CLI (n= 119) at the Marienhospital Osnabruck between 2016 and 2018were analyzed. Perioperative and late complications as well as the respective operative time were analyzed. Results: The perioperative complication rate was 18.6% and the late complication rate 1 year after the intervention was 34.5% across all stages. The perioperative complication rate was 14.2% for IC and 28.6% for CLI (p< 0.001), the late complication rate was 26% for IC and 54.8% for CLI (p< 0.001). In the total patient population the interventions associated with a peri-interventional complication lasted 13.1min longer than the interventions without complications (58.1min vs. 71.2min, p= 0.023). Patients without peri-interventional complications stayed in hospital for a mean of 3.07 days, patients with peri-interventional complications stayed for 8.08 days (p< 0.001). A significant relationship between duration of the intervention and the length of hospital stay was observed (R= 0.141, p= 0.005). Conclusion: In the current study a correlation between the length of the operation and the level of the complication rate was observed. Procedures for CLI took significantly longer than for IC, and the operative time correlated with the length of hospital stay. The operative time should be evaluated as a standard in the future to define interventions that under certain conditions can also be performed on an outpatient or day surgery basis.