Heparin-bridging therapy is associated with a high risk of post-polypectomy bleeding regardless of polyp size

Background and Aim

Evidence regarding safety and efficacy of heparin-bridging therapy for colonoscopic polypectomy remains scarce. The aim of this study was to evaluate the risk of post-polypectomy bleeding (PPB) in patients receiving heparin-bridging therapy.

Methods

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 to those who did not receive antithrombotic therapy (No-HB group).

Results

A total of 1421 polypectomies were performed 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 revealed that heparin-bridging therapy was an independent risk factor for PPB (odds ratio [OR] 9.80, 95% confidence interval [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 lesions that were < 10 mm and ≥ 10 mm in size was 14.6% and 10.2% respectively. In contrast, that was a significant risk factor in the No-HB group (OR 4.73, 95% CI: 1.42-21.3, p < 0.01). Activated partial thromboplastin time and international normalized ratio were in or under the therapeutic range in the HB group when PPB occurred.

Conclusions

Heparin-bridging therapy is associated with a high risk of PPB regardless of polyp size.

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