Paroxysmal palpitations

Male patient, 42 years old, who consults for paroxysmal episodes of tachycardia which have worsened in recent months. They do not give way with vagal maneuvers, they have never collapsed, the tachycardia lasts more than 3 hours. He arrives today at the emergency department, with BP of 100/60, pulse of 180 BPM, and associated precordial […]

Tachyarrhythmia in a patient with congenital heart disease

A 30-year-old patient with a corrected congenital heart disease who reported dyspnea and palpitations of 1 month’s evolution. Presents the following ECG. What is the most likely diagnosis? 1. Atrial fibrillation See answer 3: Atypical Atrial Flutter. 2. Atrial tachycardia See answer 3: Atypical Atrial Flutter. 3. Atypical Atrial Flutter The ECG shows a regular […]


Despite technological, diagnostic, and therapeutic advances in electrophysiology, the electrocardiogram continues to be a fundamental tool in the field of cardiac arrhythmias. Its validity has not lost ground, given its simplicity, low cost and availability. In this new section, we will share interesting electrocardiographic tracings, shared by colleagues from across the Americas. If you have […]