A 43-year-old man is stabbed in the chest and is brought to the emergency department for evaluation. Because of hemodynamic instability, he is brought to the operating room for thoracotomy. An adequate anesthesia history could not be obtained from the patient. No family member was present at the time of surgery. Upon induction of anesthesia with succinylcholine, the patient's heart rate increased to 150 beats/minute and experienced muscular rigidity. What is the most appropriate treatment for this patient?

A 43-year-old man is stabbed in the chest and is brought to the emergency department for evaluation. Because of hemodynamic instability, he is brought to the operating room for thoracotomy. An adequate anesthesia history could not be obtained from the patient. No family member was present at the time of surgery. Upon induction of anesthesia with succinylcholine, the patient's heart rate increased to 150 beats/minute and experienced muscular rigidity. What is the most appropriate treatment for this patient?

A 42-year-old man with ALS presents to his primary care physician for follow-up. He has not had any issues in the last few years and does not need supplemental oxygen. Which of the following agents may be beneficial to delay the need for ventilator support in this patient?

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?