A 53-year-old man is evaluated in the cardiology department. He has type II diabetes managed with metformin and hypertension managed with lisinopril. Temperature is 98.6 F, RR 16, BP 130/85. He is oriented to person, place, and time. An ECG is shown.
Which of the following is the next best step in management?
Adenosine
Amiodarone
Carotid massage
Electrocardioversion
Metoprolol
