Review Question - QID 109738

A 33-year-old woman presents to the emergency department with headache and muscle weakness. She says that her symptoms began approximately 3 days ago and that they have progressively worsened. She describes the headache as diffuse and with mild nausea but no emesis. She says the muscle weakness is accompanied by occasional cramping. She has been previously diagnosed with hypertension but has failed dietary modifications with exercise. She only takes a daily multivitamin and does not use illicit drugs. Her temperature is 98.6°F (37°C), blood pressure is 168/105 mmHg, pulse is 80/min, and respirations are 18/min. Physical examination is significant for 4/5 power in the bilateral lower extremity. There is no papilledema on fundoscopic exam. Laboratory testing is pending. An electrocardiogram is shown in Figure A. Which of the following is the best treatment option for this patient?