Purpose To validate the relationship between ABO blood type and risk of VTE post-RC in a large retrospective database. Methods Patients with urothelial bladder cancer (UBC) who underwent RC (intent-to-cure) for whom ABO blood type was available between 2003 and 2015 were identified from our IRB-approved database. VTE was defined as deep vein thrombo - sis (DVT) or pulmonary embolism (PE) within 90 days of surgery. VTE prophylaxis consisted of immediate postoperative Coumadin (2003–2009), unfractionated heparin (UFH) during hospitalization (2009–2015), and UFH during hospitalization plus 4 weeks of enoxaparin after discharge (2013–2015). Univariable and multivariable analyses of the association of ABO blood type with postoperative, symptomatic VTE and oncologic outcomes were performed. Results Of 1341 patients, 595 (44.4%) were ABO type O and 746 (55.6%) were non-O (A, B and AB). 90 patients were diagnosed with VTE within 90 days of surgery (6.7%) (43% DVT-only, 57% PE ± DVT). On multivariable analysis non-O blood type was associated with a nearly twofold increased risk of VTE (OR = 1.94, 95% CI 1.215–3.098, p = 0.004). No difference in recurrence-free survival or overall survival was seen between ABO groups. Conclusion Non-O blood type is an independent, non-modifiable risk factor for postoperative VTE after RC.
World Journal of Urology – Springer Journals
Published: Jun 6, 2018
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