Study Of Factors Related To The Etiology Of Small Intestinal Bleeding

Objective:Small intestinal bleeding(SBB),which usually refers to the intestinal bleeding between the duodenal papilla and the ileocecal valve,accounts for 5%-10%of all gastrointestinal bleeding.Because of its clinical characteristics of difficult examination difficulty,low diagnosis rate,and high missed diagnosis rate,which bring great difficulties and challenges to the diagnosis of clinicians.With the continuous update of small intestinal diagnostic technology,it is now possible to identify the small intestine as the source of Bleeding in most patients previously diagnosed with Obscure Gastrointestinal Bleeding(OGIB).Gastrointestinal guidelines from the American College of Gastrointestinal(ACG)recommend reclassification of the original term OGIB as intestinal bleeding.This article analyzes the etiology and clinical characteristics of Small intestinal bleeding to provide clinical diagnosis and treatment ideas.Methods:This study retrospectively analyzed the clinical data of 119Small intestinal bleeding patients admitted to our center from January 2015to January 2022.According to the etiology of Small intestinal bleeding,patients were divided into vascular lesions,tumors,inflammatory lesions,and small intestinal diverticulum.The data collected included anemia,sex,age,lesion site,examination method,lens admission method,and treatment and their prognosis.In the present study,patients with small intestinal bleeding were divided according to gender,and the differences between the two groups and the etiologys of small intestinal bleeding were statistically analyzed.The patients with small intestinal bleeding were divided into a less than 40 years old group,a 40-60 years old group,and a more than 60years old group according to age,to explore the differences between different age groups and the etiologys of small intestinal bleeding.According to the anatomical location of small intestinal bleeding,the patients were divided into a duodenum group,jejunum group,ileum group,and whole small intestine group(that is,every part of the small intestine had bleeding spots),and the correlation between the anatomical location of small intestinal bleeding and the etiology was discussed.Patients with small intestinal bleeding were divided according to the examination method,including electronic computed tomography(Computed tomography,CT),capsule endoscopy(Video capsule endoscopy,VCE),and balloon-assisted colonoscopy(Balloon assisted endoscopy,BAE),to investigate the different diagnosis results of small bowel bleeding.Results:In the present study,according to the gender division of patients with small intestinal bleeding,the results showed that the etiology of small intestinal bleeding and gender were different(?~2=7.925,P=0.048).According to the age division of patients with Small intestinal bleeding,the results showed that the etiology of Small intestinal bleeding was different with different age groups(?~2=35.884,P=0.001).According to the anatomical location of small intestinal bleeding,the results revealed that there was a difference between the duodenum and ileum(P=0.035),and there was also a difference between the jejunum and ileum(P<0.001).There were differences between duodenum and ileum(P=0.005)and between jejunum and ileum(P<0.001).According to the examination method of small intestinal bleeding,CT and BAE also had statistical significance in the diagnosis of small intestinal bleeding(P=0.002).Conclusions:In this study,the etiology of small intestinal bleeding varies according to age and sex.Different small bowel bleeding site and its etiology is also different.The detection rate of small intestinal bleeding varies with different examination methods.