Objective: Delayed bleeding is a major complication of endoscopic submucosal dissection (ESD) of gastric neoplasms. We aimed to clarify risk factors for delayed bleeding from ESD.
Material And Methods: This study included 447 patients in whom 544 gastric neoplasms were resected by ESD between April 2006 and March 2011 in Yamaguchi University Hospital. We analyzed risk factors for delayed bleeding from ESD in relation to various clinical and pathological factors.
Results: En bloc resection rate was 95.4% (519/544), and curative resection rate was 87.8% (477/544). Delayed bleeding occurred in 7.0% (38/544) and perforation occurred in 1.8% (10/544) of patients. Univariate analysis revealed platelet count (Plt) <15 × 10⁴/μl (p = 0.013), prothrombin time (PT) <70% (p = 0.044), resected size ≥ 50 mm (p = 0.038), and positive/indeterminate lateral margin (p = 0.012) to be risk factors for delayed bleeding. Multivariate analysis showed that Plt <15 × 10⁴/μl (odds ratio [OR], 2.62; 95% confidence interval [CI]: 1.17-5.53, p = 0.020) and positive/indeterminate lateral margin (OR, 5.45; 95% CI: 1.39-17.95, p = 0.018) were independent risk factors for delayed bleeding.
Conclusions: Low Plt, low PT, large resected size, and positive/indeterminate lateral margin were significant risk factors for delayed bleeding from ESD. Patients with these risk factors must be carefully observed for signs of delayed bleeding.
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