Turkish Journal of Gastroenterology
Gastrointestinal Tract - Original Article

Risk of colonoscopic post-polypectomy bleeding in patients after the discontinuation of antithrombotic therapy

1.

Department of Endoscopy, Saku Central Hospital Advanced Care Center, Saku, Japan

2.

Department of Gastroenterology, Nara City Hospital, Nara, Japan

3.

Division of Endoscopy and Gastrointestinal Oncology, Shizuoka Cancer Center, Nagaizumi, Japan

4.

Nakamura Clinic, Shimanto, Japan

5.

Department of Gastroenterology, Saku Central Hospital Advanced Care Center, Saku, Japan

6.

Department of Gastroenterology, Isesaki Municipal Hospital, Isesaki, Japan

7.

Department of Medical Oncology, Saku Central Hospital Advanced Care Center, Saku, Japan

8.

Department of Gastroenterology, Matsudo City Hospital, Matsudo, Japan

9.

Department of Community Care, Saku Central Hospital, Saku, Japan

Turk J Gastroenterol 2020; 31: 752-759
DOI: 10.5152/tjg.2020.19428
Read: 471 Downloads: 228 Published: 14 December 2020

Background/Aims: Few studies have examined the incidence of post-polypectomy bleeding (PPB) after discontinuation of antithrombotic therapies. Therefore, this study aimed to evaluate the incidence of PPB and thromboembolic events in patients whose antithrombotic agents were discontinued before colonoscopy.

Materials and Methods: We retrospectively selected all patients who underwent colon polypectomy at a community hospital. A total of 282 patients (540 polypectomies) discontinued antithrombotic agents (group 1), and 1,648 patients (2,827 polypectomies) did not take antithrombotic agents (group 2). The cessation periods before and after polypectomies were 4 and 3 days for warfarin, 5 and 3 days for anti-platelet agents, and 7 and 5 days of combination therapy, respectively. Main outcome measurements were the incidence of PPB and thromboembolic events.

Results: Immediate PPB rates were 3.9% (11/282) in group 1 and 4.6% (76/1648) in group 2 (adjusted odds ratio [OR], 0.85; 95% confidence interval [CI], 0.42-1.72; p=0.65). Delayed PPB rates were 1.4% (4/282) in group 1 and 1.1% (18/1648) in group 2 (adjusted OR, 1.24; 95% CI, 0.36-4.24; p=0.732). No thromboembolic events were observed in either group.

Conclusion: Our cessation periods were appropriate, and further shortening of these periods is possible.

Cite this article as: Kishino T, Oyama T, Hotta K, et al. Risk of colonoscopic post-polypectomy bleeding in patients after the discontinuation of antithrombotic therapy. Turk J Gastroenterol 2020; 31(11): 752-9.

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