A 52-year-old woman presents to the emergency department with weakness. The following ECG is obtained:
A 80-year-old woman is referred to the emergency department for suspected rapid atrial fibrillation. The following ECG is obtained on arrival:
A 72-year-old man with PMHx of HTN presents to the emergency department with vomiting and lightheadedness. He is noted to be slightly bradycardic with an irregular rhythm on arrival. The…