William J O'Brien1,2, Radwan Dipp Ramos2, Kalpana Gupta2,3, Kamal M F Itani2,3,4. 1. VA Boston Center for Healthcare Organization and Implementation Research, Boston, MA. 2. VA Boston Department of Surgery, Boston, MA. 3. Boston University School of Medicine, Boston, MA. 4. Harvard Medical School, Boston, MA.
Abstract
To estimate the relative risk of explantation in patients with skin and soft tissue infection onset within 90 days of hernia surgery, compared with days 91-365 and after 1 year. BACKGROUND: Infectious complications occurring after hernia repair with synthetic mesh require prolonged treatment, and eventual mesh explantation. Little is known whether early versus late onset infection is associated with differential risk of mesh removal, and whether treatment with long-term antibiotics or debridement are associated with mesh salvage. METHODS: This was a retrospective observational cohort study. We obtained data on all inguinal, umbilical, and ventral hernia repairs with implanted synthetic mesh performed in Veterans Affairs hospitals during 2008-2015. Participants without a 5-year infection after hernia surgery were excluded. Logistic regression estimated the association of mesh explantation with exposure to mesh-related infection during postoperative days 0-90, versus days 91-365 versus after 1 year. Additional covariates included any subsequent abdominal operation, antibiotic administration, and incision and drainage (I&D) or debridement procedures. RESULTS: One thousand eight hundred eighty-five patients underwent index hernia repair and developed a skin and soft tissue infection within 5 years. Infection onset during days 91-365 was associated with increased explantation risk (OR, 1.62; 95% CI, 1.04-2.48), as was increased antibiotic use (OR, 1.04; 95% CI, 1.03-1.05) and surgical treatments (OR, 3.74; 95% CI, 3.02-4.67). Subsequent abdominal operation was associated with lower explantation risk (OR, 0.46; 95% CI, 0.33-0.61). CONCLUSIONS: Early infections may be more suitable for conservative management. Later-onset infections have lower probability of mesh salvage and should be considered for earlier explantation to save the patients prolonged courses of antibiotics and surgical interventions.
To estimate the relative risk of explantation in patients with skin and soft tissue infection onset within 90 days of hernia surgery, compared with days 91-365 and after 1 year. BACKGROUND: Infectious complications occurring after hernia repair with synthetic mesh require prolonged treatment, and eventual mesh explantation. Little is known whether early versus late onset infection is associated with differential risk of mesh removal, and whether treatment with long-term antibiotics or debridement are associated with mesh salvage. METHODS: This was a retrospective observational cohort study. We obtained data on all inguinal, umbilical, and ventral hernia repairs with implanted synthetic mesh performed in Veterans Affairs hospitals during 2008-2015. Participants without a 5-year infection after hernia surgery were excluded. Logistic regression estimated the association of mesh explantation with exposure to mesh-related infection during postoperative days 0-90, versus days 91-365 versus after 1 year. Additional covariates included any subsequent abdominal operation, antibiotic administration, and incision and drainage (I&D) or debridement procedures. RESULTS: One thousand eight hundred eighty-five patients underwent index hernia repair and developed a skin and soft tissue infection within 5 years. Infection onset during days 91-365 was associated with increased explantation risk (OR, 1.62; 95% CI, 1.04-2.48), as was increased antibiotic use (OR, 1.04; 95% CI, 1.03-1.05) and surgical treatments (OR, 3.74; 95% CI, 3.02-4.67). Subsequent abdominal operation was associated with lower explantation risk (OR, 0.46; 95% CI, 0.33-0.61). CONCLUSIONS: Early infections may be more suitable for conservative management. Later-onset infections have lower probability of mesh salvage and should be considered for earlier explantation to save the patients prolonged courses of antibiotics and surgical interventions.
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