A 62-year-old man presents with cogwheel rigidity, resting tremor, and bradykinesia. He is diagnosed with Parkinson's disease. His medications include a monoamine oxidase (MAO) inhibitor and a catechol-O-methyltransferase (COMT) inhibitor. The intent of inhibiting these enzymes is to increase synaptic dopamine, although many amine neurotransmitters are substrates for both of these enzymes. Which of the following is a substrate for MAO only?

A 62-year-old man presents with cogwheel rigidity, resting tremor, and bradykinesia. He is diagnosed with Parkinson's disease. His medications include a monoamine oxidase (MAO) inhibitor and a catechol-O-methyltransferase (COMT) inhibitor. The intent of inhibiting these enzymes is to increase synaptic dopamine, although many amine neurotransmitters are substrates for both of these enzymes. Which of the following is a substrate for MAO only?

A 37-year-old man is preparing to undergo functional endoscopic sinus surgery. In the operating room, he is given intravenous succinylcholine. This agent will initially produce which of the following responses?

Favorable characteristics of pramipexole as a dopamine agonist for treatment of parkinsonism in a 72-year-old man would include which of the following?

A physician is preparing to suture a wound in a 19-year-old man who sustains a laceration of his left leg while playing in a baseball game. The physician is injecting 1% lidocaine to anesthetize the wound. He aspirates back prior to injection. If he did not do this and the lidocaine got into the systemic circulation, which of the following effects would be possible?

A 63-year-old man with a history of Parkinson's disease and generalized anxiety is placed on a first-generation antipsychotic medication. Characteristics of this class of medications include which of the following?