Abstract
Evidence regarding safety and efficacy of heparin-bridging therapy for colonoscopic polypectomy remains scarce. The aim of the present study was to evaluate the risk of post-polypectomy bleeding (PPB) in patients receiving heparin-bridging therapy. We retrospectively reviewed the database of patients who underwent colonoscopic polypectomy with prophylactic clip closure between January 2007 and December 2014 at our institution. We evaluated patients receiving heparin-bridging therapy (HB group) compared with those who did not receive antithrombotic therapy (No-HB group). A total of 1421 polypectomies were carried out on 773 patients; 45 patients were in the HB group and 728 patients were in the No-HB group. The incidence of PPB per patient was significantly higher in the HB group (22.2% vs 1.9%, P<0.0001), and multivariate analysis showed that heparin-bridging therapy was an independent risk factor for PPB (OR 9.80, 95% CI 4.23-22.3, P<0.0001). In the HB group, the polyp size was not a risk factor for PPB (OR 0.67, 95% CI 0.19-2.26, P=0.55); the incidence of PPB in lesions of <10mm and ≥10mm in size was 14.6% and 10.2% respectively. In contrast, that was a significant risk factor in the No-HB group (OR 4.71, 95% CI 1.41-21.3, P=0.011). Activated partial thromboplastin time and international normalized ratio were in or under the therapeutic range in the HB group when PPB occurred. Heparin-bridging therapy is associated with a high risk of PPB regardless of polyp size.
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