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Diagnosing a wide complex tachycardia using basic electrophysiologic properties of the cardiac conduction system

Gregory P Siroky1, Davendra Mehta1

  • 1Department of Cardiology Division of Electrophysiology Mount Sinai Morningside Icahn School of Medicine at Mount Sinai New York New York USA.

Journal of Arrhythmia
|February 28, 2022
PubMed

Insights

A 65-year-old man with heart conditions experienced palpitations due to a wide complex tachycardia, likely from missed medications. This case highlights a diagnostic approach for complex arrhythmias using cardiac conduction properties.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Diagnostics

Background:

  • The patient had a history of coronary artery disease (CAD) post-percutaneous coronary intervention (PCI) and atrial fibrillation (AF) post-pulmonary vein isolation (PVI).
  • He presented with acute palpitations after non-adherence to prescribed medications.

Purpose of the Study:

  • To describe a systematic diagnostic strategy for wide complex tachycardia (WCT).
  • To illustrate the application of cardiac conduction system properties in differentiating WCT origins.

Main Methods:

  • Clinical presentation review of a patient with known cardiac history.
  • Electrocardiographic (ECG) analysis to identify characteristics of the wide complex tachycardia.
  • Stepwise diagnostic algorithm based on electrophysiological principles.

Main Results:

  • The patient was diagnosed with a wide complex tachycardia.
  • The diagnostic approach successfully identified the likely mechanism of the tachycardia.

Conclusions:

  • A structured, stepwise diagnostic method is effective for evaluating wide complex tachycardia in patients with complex cardiac histories.
  • Understanding the cardiac conduction system is crucial for accurate arrhythmia diagnosis.

Keywords:
Mobitz I AV blockatrial tachycardiaelectrocardiogramlinkingphase 3 block

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