MRCP2-2191

MRCP2-2191

A 75-year-old man is receiving hospital care for a urinary tract infection. Initially, he was disoriented, but his condition has since improved. However, his daughter reports that his short-term memory has declined over the past five months, and he is experiencing visual hallucinations.

During the physical examination, his respiratory rate is 16 breaths per minute, and his oxygen saturation is 95% on air. His heart rate is 69 beats per minute, and his blood pressure is 121/80 mmHg. He is warm and well-perfused, and his abdomen is soft and non-tender. His Glasgow coma score is 14 due to confusion for voice, and he has a normal neurological examination except for mild rigidity. He is afebrile at 36.6ºC.

Which medication is most likely to alleviate his ongoing symptoms?