Risk factors and outcomes for early returns to the operating room following abdominal wall hernia repairs

Risks of re-operation in ventral hernias in non-American populations and recurrence have been studied extensively. However, data on early risk factors for reoperation in North America are still lacking. The most recent NSQIP study, analyzing risk factors for reoperation of ventral hernias was extracted from 2005-2008 data. Since then, there have been major advances in ventral hernia repair techniques. Here, we identify risk factors and indications for re-operation within 30 days.

NSQIP ACS data from 2020-2022 were used in our analysis. Additional procedures that posed significant morbidity and mortality were excluded. Risk factors were analyzed with univariate and multivariable models to determine association with re-operation within 30 days. ICD10 codes for re-operation were also analyzed.

Of 56,260 patients, 2.38 % returned to the OR within 30 days. Higher ASA, male gender, surgical site infection (SSI), smoking, ascites, age group > 70, dialysis patients, open surgeries and dehiscence were significantly associated with re-operation whereas outpatient surgery was protective in univariate and multivariable models (p < 0.01). The most common indications for re-operation were surgical site occurrence (SSO) and recurrence of hernia. Mortality was significantly higher in the reoperation group, 3.29 %, compared to those patients that did not require early reoperation (0.36 %, p < 0.01).

Mortality and early reoperation rates have decreased in the past decade in the U.S, which could be attributed to advancement in ventral hernia repair techniques. Our analysis of risk factors for reoperation supports findings in the broader literature. This study also suggests that SSO and recurrence of hernia are leading diagnoses for early reoperation.