Abstract Number: PB2362
Meeting: ISTH 2020 Congress
Background: Obesity is a major risk factor for venous thromboembolism (VTE). The incidence of VTE in bariatric surgery patients is low, but it contributes significantly to morbidity and mortality. Strategies for ideal prophylaxis are unclear due to the lack of evidence for risk stratification.
Aims: This study aims to determine the incidence of VTE in patients undergoing bariatric surgery in the DC metro area and to identify risk factors for VTE specific to this population.
Methods: We conducted a retrospective multicentric descriptive study, including all the patients who had bariatric surgery from Jan 1, 2017, to Dec 31, 2018. Statistical analysis was reported using means for descriptive data, t-test for continuous variables, and chi-square for categorical variables.
Results: A total of 1,175 patients underwent bariatric surgery, of which 3.91% (46) had VTE. The mean BMI was 44.69 (SD=9.10). The mean time to VTE was 34 days (SD=25). Older age was a risk factor (50 vs. 44 years, p=0.0002). Statistical differences were found in patients with the following comorbidities: diabetes (60% vs. 30%), history of VTE (32% vs. 4.34%), chronic kidney disease 21% vs. 5.49%), heart failure (15% vs. 5%) when comparing patients with VTE to those without VTE, respectively. BMI, race, length of stay, and duration of the operation were not significantly different. Caprini score was used to calculate perioperative VTE risk. Mean scores were significantly higher in patients with VTE (3.86; intermediate-risk) than those without a VTE event (2.75; low risk) (p=0.0021).
Conclusions: VTE incidence was higher in our bariatric patients (3.91%) compared to the literature (0.3-2.02%) and the general population (1-2 per thousand). VTE events were noted to occur at an average of 30 days following the procedure and in older patients with multiple comorbidities. Including the Caprini score to stratify the risk, we will design a prospective trial to achieve optimal thromboprophylaxis.
To cite this abstract in AMA style:Baez V, Latif H, Shenoy AG, Wang H, Hughes JM, Shope TR, Fitzpatrick K. Incidence and Risk Factors of Venous Thromboembolism in Patients Undergoing Bariatric Surgery [abstract]. Res Pract Thromb Haemost. 2020; 4 (Suppl 1). https://abstracts.isth.org/abstract/incidence-and-risk-factors-of-venous-thromboembolism-in-patients-undergoing-bariatric-surgery/. Accessed January 28, 2022.
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