Therefore, we conducted a prospective cohort study in a clinical setting to assess bleeding risk attributable to gastric biopsy in patients taking antiplatelet agents and the validity of performing endoscopic biopsy with small cup biopsy forceps. Methods: The study was performed during

the 1-year for 5374 scheduled esophagogastroduodenoscopy performed. 1128 patients, PD 332991 including 65 patients taking antiplatelet agents underwent gastric biopsy with small cup biopsy forceps, and 2025 biopsy specimens were obtained from each part of the stomach. Clinical bleeding was investigated during and after endoscopy. Two pathologists assessed the presence of muscularis mucosae in biopsy specimens in addition to the suitability of specimens for histological diagnosis. Results: Ratio of appropriate

specimens obtained with small cup biopsy forceps was 99.3% (2010/2025) and muscularis mucosae was detected BTK inhibitor price in 27.8% (538/1394) of specimens. After endoscopy, 1 patient of 1049 patients who took no antithrombotic agents experienced major bleeding (0.095%); however, 65 patients receiving antiplatelet treatment experienced no bleeding. Conclusion: Endoscopic forceps with a small cup is useful and the absolute risk attributable to gastric biopsy in patients taking antiplatelet agents seems to be low. Key Word(s): 1. endoscopic biopsy; 2. antiplatelet agent; 3. bleeding; 4. biopsy forceps; 5. antithrombotic agent Presenting Author: KUNIO IWATSUKA Additional Authors: TAKUJI GOTODA, SHIN KONO, SHO SUZUKI, NAOKO YAGI, CHIKA KUSANO, MASAKATSU FUKUZAWA, TAKASHI KAWAI, FUMINORI MORIYASU Corresponding Author: KUNIO IWATSUKA Affiliations:

Tokyo Medical University, Tokyo Medical University, Tokyo Medical University, Tokyo Medical University, Tokyo Medical University, Tokyo Medical University, Tokyo Medical University Hospital, Tokyo Medical University Objective: Despite improvements in pharmacological click here and endoscopic hemostasis, gastrointestinal bleeding (GIB) remains fatal clinical event in the elderly patients. With increasing numbers of the elderly population, endoscopists might face such kind of serious cases. The aims of this study are to research treatment outcomes and clinical features of GIB in elderly patients. Methods: Medical records of 185 patients (mean age 68.2 years, range 10–99 years, male/female 123/62) with GIB who underwent esophagogastroduodenoscopy or colonoscopy from April 2012 to March 2014 were reviewed. Clinical outcomes and clinicopathological features including pre-existing co-morbidities, prescribed drugs (antiplatelet agent, anticoagulant, NSAIDs, corticosteroid) were compared between younger <70 years old) and elderly groups (≤70 years old). Results: Following features were specifically found in elderly patients (N = 100) compared to non-elderly patients (N = 85): presence of co-morbid diseases (90.0% vs. 62.4%: p < 0.001), low hemoglobin level (9.0 vs. 10.6 g/dl: p < 0.