Clinical Research Directory

Inclusion Criteria: * No gender limit, age ≥ 18 years * Presenting to the emergency department with melena or hematemesis * Hemodynamically stable at presentation * No endoscopic examination has been performed due to this bleeding * Agree to participate in this clinical trial and sign an informed consent form Exclusion Criteria: * Patients with acute active massive bleeding or hemodynamic instability (blood pressure \< 90 mmHg and heart rate \> 120 beats per minute) * Patients with Hematochezia * Hemodynamics remained unstable after fluid resuscitation * Known or suspected intestinal obstruction, stenosis, or fistula * Severe motor disorders such as asthma, swallowing disorders, or gastric paralysis * History of abdominal surgery that affects the normal structure of the digestive tract in the past * When capsule retention occurs, the problem cannot be solved through surgery due to subjective or objective reasons * Implantable medical devices such as pacemakers, electronic cochlear implants, drug infusion pumps, and neural stimulators are installed inside the body, except for MRI compatible products * Pregnant women * Those who require MRI examination before capsule endoscopy discharge * Suffering from severe cardiovascular and pulmonary diseases (such as severe myocardial infarction, arrhythmia, heart failure, and respiratory failure) * Refuse MCE or gastroscopy examination * The researchers believe that the subjects have any other factors that are not suitable for participation in the study