A Patient Comes to the Clinic with a History of Syncope

A patient comes to the clinic with a history of syncope and weakness for 2 to 3 days.The primary care NP notes thready,rapid pulses and 3-second capillary refill.An ECG reveals a heart rate of 198 beats per minute with a regular rhythm.The NP should:

A) administer intravenous fluids and obtain serum electrolytes.
B) administer amiodarone in the clinic and observe closely for response.
C) order digoxin and verapamil and ask the patient to return for a follow-up examination in 1 week.
D) send the patient to an emergency department for evaluation and treatment.