A Case of Complicated Bacteremia: When the Source Is in the Blood.

Infective endocarditis is an infectious disease of the heart tissue, mainly affecting heart valves and intracardiac devices. We present the case of a 71-year-old male pacemaker carrier with a history of hepatic cirrhosis, esophageal varices, hepatocellular carcinoma, and severe aortic stenosis, who was admitted to the emergency room and hospitalized due to upper gastrointestinal bleeding. Although upper endoscopy showed no signs of active acute hemorrhage, the patient required a red blood cell transfusion.