Independent predictors and timing of portomesenteric vein thrombosis after bariatric surgery |
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Institution: | 1. Department of Surgery, Henry Ford Health, Detroit, Michigan;2. Michigan Bariatric Surgery Collaborative, Ann Arbor, Michigan;3. Department of Surgery, Michigan Medicine, Ann Arbor, Michigan;4. Center for Healthcare Outcomes and Policy, Ann Arbor, Michigan |
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Abstract: | BackgroundPortomesenteric vein thrombosis (PVT) is a rare complication following bariatric surgery but can result in severe morbidity as well as death.ObjectiveIdentification of risk factors for PVT to facilitate targeted management strategies to reduce incidence.SettingProspective, statewide bariatric-specific clinical registry.MethodsWe identified all patients who underwent primary bariatric surgery between June 2006 and November 2021 (n = 102,869). Patient characteristics, procedure type, operative details, and 30-day postoperative complications were analyzed with multivariable logistic regression to evaluate for independent predictors of PVT.ResultsA total of 117 patients (.11%) developed a postoperative PVT, with 6 (5.1%) associated deaths. The majority of PVTs occurred in patients who underwent sleeve gastrectomy (109 patients; 93.2%), and the PVT occurred most commonly during the second (37%), third (31%), and fourth weeks (23%) after surgery. Independent risk factors for PVT included a prior history of venous thromboembolism (odds ratio OR] = 3.1; 95% confidence interval CI]: 1.64–5.98; P = .0005), liver disorder (OR = 2.3; 95% CI: 1.36–4.00; P = .0021), undergoing sleeve gastrectomy (OR = 12.4; 95% CI: 4.98–30.69; P < .0001), and postoperative complications including obstruction (OR = 12.5; 95% CI: 4.65–33.77; P < .0001), leak (OR = 7.9; 95% CI: 2.76–22.64; P = .0001), and hemorrhage (OR = 7.6; 95% CI: 3.57–16.06; P < .0001).ConclusionsIndependent predictors of PVT include a prior history of venous thromboembolism, liver disease, undergoing sleeve gastrectomy, and experiencing a serious postoperative complication. Given that the incidence of PVT is most common within the first month after surgery, extending postdischarge chemoprophylaxis during this time frame is advised for patients with increased risk. |
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Keywords: | Portomesenteric vein thrombosis Venous thromboembolism Sleeve gastrectomy Liver disease Postoperative complications Hypercoagulable Bariatric surgery Chemoprophylaxis |
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