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January 26, 2021
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Increased operative time is associated with complications, transfusion after revision TKA

According to published results, every 15-minute increase in operative time is associated with a higher likelihood of wound complications, blood transfusion and prolonged length of hospital stay after revision total knee arthroplasty.

Researchers used the American College of Surgeons National Surgical Quality Improvement Program to identify a retrospective cohort of 14,769 patients who underwent revision TKA from 2007 to 2016. Researchers recorded demographic data, 30-day postoperative complications and performed multinomial multivariate analysis to analyze the effect of increased operative time.

According to the study, mean operative time was 133 minutes. Of the cohort, 2.8% (n = 419) experienced wound complications, 10.7% (n = 1,584) required a blood transfusion and 4.5% (n = 664) had an extended hospital stay of greater than 7 days. Additionally, 3.4% of patients (n = 495) required an unplanned return to the OR.

“Every 15-minute increase in operative time led to a 1.028 times greater chance of developing a wound complication, 1.177 times greater chance of requiring a postoperative transfusion, 1.056 times greater chance of requiring an extended hospital stay and 1.036 times greater chance of requiring an unplanned return to the operating room,” the researchers wrote in the study.

“Although operative time is often an uncontrollable factor, surgeons should consider the effect of prolonged operative time on potential complications in the acute postoperative period,” they concluded.