Review Question - QID 213517

A 25-year-old man is brought to the emergency department by police. The patient was found intoxicated at a local bar. The patient is combative and smells of alcohol. The patient has a past medical history of alcoholism, IV drug use, and schizophrenia. His current medications include IM haloperidol and ibuprofen. The patient is currently homeless and has presented to the emergency department similarly multiple times. His temperature is 97.0°F (36.1°C), blood pressure is 130/87 mmHg, pulse is 100/min, respirations are 15/min, and oxygen saturation is 96% on room air. Physical exam is deferred due to patient non-compliance. Laboratory values reveal an acute kidney injury and a normal PT/PTT. The patient is started on IV fluids and ketorolac to control symptoms of a headache. The patient begins to vomit into a basin. The nursing staff calls for help when the patient’s vomit appears grossly bloody. Which of the following best describes the most likely diagnosis?