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Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
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The effect of myocardial revascularization on malignant ventricular arrhythmias in coronary artery disease

A Sudzinova1, B Stancak, J Sedlak

  • 1Arrhythmology Department, East Slovakian Institute for Cardiac and Vascular Diseases, Kosice, Slovakia. asudzinova@vusch.sk

Bratislavske Lekarske Listy
|June 11, 2009
PubMed

Insights

Myocardial revascularization has minimal impact on malignant ventricular arrhythmias in coronary artery disease (CAD) patients. However, complete revascularization significantly reduces the need for implantable cardioverter-defibrillator (ICD) implantation compared to incomplete procedures.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Surgery

Background:

  • Malignant ventricular arrhythmias in coronary artery disease (CAD) pose a significant risk for sudden cardiac death.
  • Myocardial revascularization's role in preventing these arrhythmias is debated.
  • Understanding its impact is crucial for secondary prevention strategies.

Purpose of the Study:

  • To evaluate the inducibility of sustained ventricular tachycardia (VT) or ventricular fibrillation (VF) post-myocardial revascularization.
  • To compare the effectiveness of complete versus incomplete revascularization in managing these arrhythmias.
  • To assess the impact on the need for implantable cardioverter-defibrillator (ICD) implantation.

Main Methods:

  • Study included fifty patients with documented sustained VT/VF and CAD.
  • Patients were assessed for arrhythmia inducibility after revascularization.
  • Comparison between complete and incomplete revascularization groups was performed.

Main Results:

  • A trend towards lower arrhythmia inducibility was observed in revascularized patients, though not statistically significant.
  • Incompletely revascularized patients were exclusively male.
  • Significantly fewer ICDs were implanted in the completely revascularized group.

Conclusions:

  • Myocardial revascularization shows limited effect on the inducibility of malignant ventricular arrhythmias.
  • Complete revascularization substantially lowers the requirement for ICD implantation compared to incomplete revascularization.
  • This suggests a benefit of complete revascularization in reducing device dependency.
Abstract

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