INCIDENCE AND RISK FACTORS FOR INCISIONAL HERNIA FOLLOWING MIDLINE LAPAROTOMY: A RETROSPECTIVE STUDY
Main Article Content
Keywords
Incisional hernia; midline laparotomy; wound closure; surgical site infection; BMI; mass closure; Bhopal; Madhya Pradesh
Abstract
Background: Incisional hernia is among the most prevalent and costly complications following midline laparotomy, with reported incidence ranging from 11% to 23% in published literature. In central India, particularly in Bhopal's tertiary care sector, the burden is compounded by delayed presentations, high rates of emergency surgery driven by bowel obstruction and trauma, suboptimal nutritional status, and uncontrolled diabetes mellitus in a predominantly working-class population attending Peoples College of Medical Sciences (PCMSR). Despite this substantial burden, institution-specific incidence data and locally validated risk factor profiles from Madhya Pradesh remain unpublished.[1][7][14]
Objectives: To determine the cumulative incisional hernia incidence at PCMSR within a defined follow-up period following midline laparotomy, and to identify independent patient-level and operative-level risk factors using multivariate Cox proportional hazards regression.
Methodology: A retrospective cohort study of 342 patients who underwent midline laparotomy between November 2022 and April 2023 at Shri Mahant Indiresh Hospital-affiliated wards and surgical units of PCMSR. Case records, operative notes, wound assessment charts, and outpatient follow-up data were systematically reviewed. Cox proportional hazards regression identified independent predictors. Analysis: IBM SPSS v26.0 and R v4.2.1.
Results: Incisional hernia developed in 78 patients (22.8%; 95% CI: 18.4-27.7%) over the follow-up period. Independent predictors included wound infection/SSI (HR 5.14, p<0.001), BMI >=30 (HR 3.62, p<0.001), emergency surgery (HR 2.94, p<0.001), mass closure technique (HR 2.78, p<0.001), and hypoalbuminaemia (HR 2.44, p=0.002). The temporal onset chart identified peak hernia emergence at 4-6 months post-operatively. The population attributable risk of SSI was 31.4%.
Conclusion: Incisional hernia incidence at PCMSR Bhopal (22.8%) exceeds published Indian benchmarks, driven predominantly by SSI, obesity, and mass closure technique. Adoption of the small-bites running suture closure technique, aggressive perioperative glycaemic and nutritional optimisation, and rigorous SSI prevention bundles could reduce hernia incidence by an estimated 30-35% in the PCMSR surgical population.
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