Abstract
Antithrombotic (AT) therapy has been known to increase post-endoscopic resection (ER) bleeding risk; however, there are few studies quantifying the effect of AT agents. This study aimed to analyze the incidence of delayed bleeding (DB) based on AT agents administered and to identify the proper timing of drug cessation. Between January 2011 and March 2017, 7752 patients with 8242 lesions underwent ER for single gastric neoplasm. After a 2:1 propensity score matching using age, sex, specimen size, tumor location, diagnosis, chronic kidney disease, and liver cirrhosis, 798 and 399 lesions were classified as belonging to the matched control (MC) group and AT group, respectively. The clinical outcomes were compared between the 2 groups. The DB rate of the MC and AT groups was 6.3% and 10.0%, respectively. There was no significant difference in the early DB rate between the 2 groups; however, the late DB rate of the AT group was higher than the MC group. The continuation group of the AT group had a higher incidence of DB than their matched control subjects (15.9% vs 5.1%; odds ratio, 3.55; 95% confidence interval, 1.24-10.14; P= .018). In patients taking anticoagulants, heparin bridging therapy (HBT) increased the incidence of DB compared with non-HBT (35.7% vs 10.0%; odds ratio, 5.00; 95% confidence interval, 1.11-22.50; P= .036). No thromboembolic events were observed in patients taking AT agents. Patients receiving AT therapy had a higher incidence of DB than those not receiving AT therapy, especially with the continued administration of AT agents and HBT.
Published Version
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