A 32-year-old man presents to his primary care physician because of a 2-week history of nasal stuffiness, cough, and sinus pain. He is prescribed with phenylephrine. He must be aware of which of the following potential adverse effects?

A 32-year-old man presents to his primary care physician because of a 2-week history of nasal stuffiness, cough, and sinus pain. He is prescribed with phenylephrine. He must be aware of which of the following potential adverse effects?

A 35-year-old man who serves as a chief operating officer of a local bank consumes 14 cups of coffee per day as a means of dealing with his stressful job. He presents to his primary care physician as a checkup to be established as a patient. Which of the following signs might the physician observe in this patient?

A 42-year-old woman presents to her primary care physician in follow-up from a visit to the emergency department for a treatment of a seizure. The patient has had seizures approximately every other month for the last 6 months. Consideration is now being given to beginning an antiseizure medication. Which of the following indications will play the lowest role in the physician's mind as to which antiseizure agent to start in this patient?

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 54-year-old man is elected to undergo a total knee replacement following a knee arthroscopy. He arrives the day of the surgery in good health. The anesthesiologist induces sedation using phenobarbital. Which of the following parameter changes may be evident in this patient because of the phenobarbital?