What Is the Most Common Cause of Upper Gastrointestinal Bleeding

Mr. Santos, a 65-year-old Male, Presents to the Emergency Department with Complaints of Melena (Black, Tarry Stools) and Dizziness. He Has a History of Peptic Ulcer Disease. on Physical Examination, His Blood Pressure Is 90/60 Mmhg, Heart Rate Is 110 Beats Per Minute and He Appears Pale