This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

We reviewed randomized controlled trials, review articles and clinical practice guidelines to present a practical approach to the diagnosis and management of SVTs (Box 1). We focus on the most common ...

The rhythm in Figure 1 has a subtle pattern—a narrow QRS complex with alternating short and long R-R intervals, resulting in paired QRS complexes. Careful observation of V1 in Figure 2 reveals tiny ...

Correct Answer: Atrial flutter with alternating atrioventricular (AV) conduction ratio (2:1 alternating with 4:1). Discussion: The saw-tooth pattern of atrial flutter is evident in lead II (the top ...

Multifocal atrial tachycardia is a tachycardic version of wandering atrial pacemaker in which the atrial rate is greater than 100 beats per minute. Multifocal atrial tachycardia occurs when multiple ...

Atrial flutter is a type of irregular heartbeat, or an arrhythmia. It causes your heart to beat too fast. Atrial flutter doesn't always have symptoms, but it can sometimes have serious consequences if ...

Multifocal atrial tachycardia — or MAT — is a rhythm that frequently occurs in the setting of severe lung disease. MAT is characterized by three different P-wave morphologies within one 10-second ...