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  • Title: Smoking is a risk factor for incisional hernia.
    Author: Sørensen LT, Hemmingsen UB, Kirkeby LT, Kallehave F, Jørgensen LN.
    Journal: Arch Surg; 2005 Feb; 140(2):119-23. PubMed ID: 15723991.
    Abstract:
    HYPOTHESIS: A number of risk factors for incisional hernia have been identified, but the pathogenesis remains unclear. Based on previous findings of smoking as a risk factor for wound complications and recurrence of groin hernia, we studied whether smoking is associated with incisional hernia. DESIGN: Cohort study. Clinical follow-up study for incisional hernia 33 to 57 months following laparotomy for gastrointestinal disease. Variables predictive for incisional hernia were assessed by multiple regression analysis. SETTING: Department of Surgery, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark. PATIENTS: All 916 patients undergoing laparotomy from 1997 through 1998. Surgeons performed clinical examination in 310 patients; patients who failed to meet for examination, died, or were lost to follow-up were excluded. MAIN OUTCOME MEASURES: Thirty-four variables related to patient history, preoperative clinical condition, operative severity and findings, and the surgeon's training. RESULTS: The incidence of incisional hernia was 26% (81/310). Smokers had a 4-fold higher risk of incisional hernia (odds ratio [OR], 3.93 [95% confidence interval (CI), 1.82-8.49]) independent of other risk factors and confounders. Relaparotomy was the strongest factor associated with hernia (OR, 5.89 [95% CI, 1.78-19.48]). Other risk factors were postoperative wound complications (OR, 3.91 [95% CI, 1.99-7.66]), age (OR, 1.04 [95% CI, 1.02-1.06]), and male sex (OR, 2.17 [95% CI, 1.21-3.91]). CONCLUSION: Smoking is a significant risk factor for incisional hernia in line with relaparotomy, postoperative wound complications, older age, and male sex.
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