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The ECG Blog with Reid

Atrial Fibrillation with Complete Heart Block: The Physiology of “Regularized” Atrial Fibrillation Jan 24, 2025

Atrial fibrillation (AF) is classically characterized by an irregularly irregular ventricular rhythm due to chaotic atrial depolarization and random conduction through the atrioventricular (AV) node. However, in rare instances, AF can produce a regular ventricular rhythm—a phenomenon that occurs whe...

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An ECG Misdiagnosis - Why 'The Anatomical Approach' Works Dec 20, 2024

This ECG was initially read as Sinus Bradycardia. What are your thoughts?

Before we begin, I highly recommend reading An Anatomical Approach to ECG.

At first glance the rhythm appears to be a regular bradycardia at a rate of 41 beats per minute, with a QRS morphology consistent with a Right Bund...

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