Case Presentation: A 75-year-old male with a history of gastrointestinal bleeding (GIB) due to angiodysplasia, aortic stenosis (AS) status post TAVR, moderate-severe mitral regurgitation (MR), CKD, GERD, and atrial fibrillation not on anticoagulation presented due to lightheadedness for 1 day when standing up, and fatigue for a few weeks. He also reported dark brown stools [...]