A 72-year-old man is having an electrocardiogram performed by his primary care physician to further evaluate intermittent chest pain. Regarding the phase 0 of the cardiac action potential, which of the following statements is true?

A 72-year-old man is having an electrocardiogram performed by his primary care physician to further evaluate intermittent chest pain. Regarding the phase 0 of the cardiac action potential, which of the following statements is true?

A 52-year-old man with chest pain presents to the emergency department for treatment. Three cardiac nitrates are available for treatment. The following is a listing of the agents and their onset and duration of action. Which of the following would be most appropriate for this patient?

Select the odd oe out: Sotalol:

We are administering nitroprusside intravenously for control of severe hypertension during surgery. The dose has gotten too high, and the drug has been administered too long. Refractoriness to the antihypertensive effects has occurred. Blood pressure is decreased and other signs and symptoms of potentially severe toxicity develop. What is the main nitroprusside metabolite that accounts for those problems?