Related Experiment Video
Updated: Jun 6, 2026

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
Published on: May 23, 2021
Diagnostic criteria of broad QRS complex tachycardia: decades of evolution
Becker S N Alzand1, Harry J G M Crijns
1Department of Cardiology, Maastricht University Medical Center, P. Debyelaan 25, PO Box 5800, 6229 HX Maastricht, The Netherlands. alzand@hotmail.com
Abstract:
Broad QRS complex tachycardia still presents a diagnostic challenge when confronted with a 12-lead electrocardiogram (ECG). The ECG differential diagnosis includes ventricular tachycardia vs. supraventricular tachycardia with functional aberration, pre-existing bundle branch block, intraventricular conduction disturbances, or pre-excitation. Despite all available criteria, broad complex tachycardias are still misdiagnosed or remain undiagnosed. This paper will briefly review the most recognized criteria.
Related Concept Videos
Dysrhythmias III: Characteristics of Dysrhythmias
Dysrhythmias II: Classification of Tachyarrhythmias
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Dysrhythmias V: Evaluating Dysrhythmias
