…a history of surgical atrial septal defect repair via a longitudinal atriotomy presents with highly symptomatic, persistent atypical atrial flutter (macro-re-entrant atrial tachycardia)…

In patients with atrial fibrillation with an indication for oral anticoagulation, what is the recommended strategy for antithrombotic therapy after 1 week of triple antithrombotic…

A 64-year-old woman with a history of recurrent symptomatic atrial fibrillation is started on quinidine (a sodium channel blocking agent) to maintain sinus…

…initial assessment concludes that the ECG is normal, but your colleague warns you that lead V1 may reveal an ongoing atrial flutter. Is that correct…

What is the correlation of isolated axis deviation or voltage criteria for atrial enlargement with cardiac pathology in athletes?

A 28-year-old male with Wolff-Parkinson-White (WPW) syndrome presents to the emergency department in atrial fibrillation. His ECG shows a rapid, irregular…

…Ventricular Rate 126 beats/min Atrial Rate 126 beats/min QRS Duration 90 ms QT Interval 334 ms QT Corrected 483 ms RAxis 243 ms…

…that started approximately 2 hours ago. An electrocardiogram (ECG) reveals atrial fibrillation with a rapid ventricular rate of 140 bpm. Initial troponin I is elevated…