Abstract

BackgroundVenous thromboembolism (VTE) is rare after bariatric surgery but is the most common cause of mortality. The use of VTE risk-stratification tools and compliance with practice guidelines remain unclear. ObjectivesOur objectives were to determine the utilization of risk-stratified VTE prophylaxis and its impact on VTE and bleeding outcomes. SettingAcademic hospital system. MethodsRoux-en-Y gastric bypass and sleeve gastrectomy (2016–2021) were identified from our electronic health records. Caprini score and VTE prophylaxis regimen were retrospectively determined. VTE prophylaxis consistent with Caprini guidelines was considered appropriate. Outcomes were compared between VTE prophylaxis cohorts. Variables were compared by Kruskal–Wallis test, Pearson χ2 test, and regression models. A P value of <.05 was considered significant. ResultsA total of 1849 bariatric cases were analyzed, including 64% Roux-en-Y gastric bypass and 36% sleeve gastrectomy cases. Of these, 70% and 3.7% received appropriate risk-stratified VTE prophylaxis during hospitalization and at discharge. The mean Caprini score was higher in those without appropriate prophylaxis (8.45 versus 8.04; P = .0004). Inpatient and 30- and 90-day VTE rates were .22%, .47%, and .64%. All discharge VTE events occurred in those not receiving appropriate Caprini risk-stratified VTE prophylaxis. Inpatient and 30- and 90-day bleeding complications were .22%, .23%, and .35%. The likelihood of receiving appropriate prophylaxis varied by hospital site, and receiving appropriate prophylaxis was not associated with increased bleeding risk. ConclusionCaprini guideline–indicated VTE prophylaxis can be safely used in bariatric surgery patients and may reduce preventable VTE complications without increasing bleeding risk.

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