A 49-year-old man is brought to the physician by his wife for a 4-month history of “hearing voices.” He is commenced on risperidone. 48 hours later he develops muscle rigidity and abnormal eye movements. Temperature is 98.6 F. The most appropriate pharmacologic treatment for this patient’s condition has which of the following mechanisms of action?
Agonism; acetylcholinesterase
Agonism; cholinergic
Agonism; D2 receptor
Agonism; ryanodine channel
Antagonism; acetylcholinesterase
Antagonism; cholinergic
Antagonism; D2 receptor
Antagonism; ryanodine channel
