Review Question - QID 213192

A 37-year-old man is brought into the emergency department as he was wandering the streets naked with a sword. The patient had to be forcibly restrained by police and is currently combative. Upon calming the patient and obtaining further history, the patient states that he is being pursued and that he needs to kill them all. The patient is given intramuscular (IM) haloperidol and diphenhydramine, and is admitted into the psychiatric ward. The patient has a past medical history of schizophrenia, obesity, anxiety, recurrent pneumonia, and depression. The patient is started on his home medication and is discharged 5 days later with prescriptions for multiple psychiatric medications including mood stabilizers and antidepressants. One week later, the patient is found by police standing outside in freezing weather. He is brought to the emergency department with a rectal temperature of 93.2°F (34°C). Resuscitation is started in the emergency department. Which of the following medications most likely exacerbated this patient's current presentation?