Journal
HERNIA
Volume 23, Issue 5, Pages 899-907Publisher
SPRINGER
DOI: 10.1007/s10029-019-01944-6
Keywords
Laparoscopic hernia repair; NSQIP; Obesity; Body mass index; Obesity paradox
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Purpose Body mass index (BMI) >= 35 kg/m(2) is a known independent risk factor for complications following open ventral hernia repair (VHR). We sought to examine the relationship between BMI and minimally invasive VHR. Methods The ACS-NSQIP database was queried for all patients age >= 18 years undergoing minimally invasive VHR (2005-2015). Patients were stratified into seven BMI classes: underweight (BMI < 18.5 kg/m(2)), normal weight (BMI 18.5-24.9), overweight (25-29.9), obese (30-34.5), severely obese (35-39.9), morbidly obese (40-49.9), and super obese (BMI >= 50), as well as by hernia type (reducible vs. strangulated) and time of repair (initial vs. recurrent). Multivariate logistic regression was employed to assess the risk of complication by BMI class. Results A total of 55,180 patients met inclusion criteria, and 61.4% had a BMI > 30 kg/m(2). When stratified by BMI class, we found significant differences in age, gender, race, comorbidities, and pre-operative characteristics across groups. The overall complication rate was 4.0%, ranging from 3.0% for normal BMI patients, to 6.9% for patients with a BMI >= 50 kg/m(2). Recurrent repairs and strangulated hernias both demonstrated higher complication rates. All complications (surgical and medical) were significantly associated with BMI class after adjustment (p < 0.0001). Patients with a BMI >= 50 kg/m(2) had a 1.4 times greater risk for complications than patients with normal BMIs (18-24.9 kg/m(2), p = 0.01). Conclusion BMI >= 50 kg/m(2) was determined to be an independent risk factor for surgical and medical complications after minimally invasive VHR.
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