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Electrical storm in systemic sclerosis: Inside the electroanatomic substrate.

Michela Casella1, Corrado Carbucicchio1, Eleonora Russo1

  • 1Michela Casella, Corrado Carbucicchio, Eleonora Russo, Francesca Pizzamiglio, Sergio Conti, Antonio Dello Russo, Claudio Tondo, Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy.

World Journal of Cardiology
|October 29, 2014
PubMed
Summary
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This case study highlights successful catheter ablation for refractory ventricular arrhythmias in a systemic scleroderma patient. Advanced imaging and mapping isolated a complex right ventricular aneurysm, resolving electrical storms.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Rheumatology

Background:

  • Systemic scleroderma can lead to severe cardiac complications, including arrhythmias and structural heart disease.
  • Recurrent electrical storms refractory to antiarrhythmic drugs pose a significant management challenge.
  • Catheter ablation is an established treatment for arrhythmias but requires precise anatomical and substrate characterization.

Observation:

  • A 63-year-old woman with systemic scleroderma presented with severe cardiac involvement, including ventricular tachyarrhythmias and electrical storms.
  • Electrophysiological study revealed significant right ventricular dilatation with a complex aneurysmal lesion.
  • Intracardiac echocardiography and 3D electroanatomical mapping were crucial for visualizing the arrhythmogenic substrate.

Findings:

Keywords:
Electrical stormRadiofrequency catheter ablationSystemic sclerosisVentricular tachycardia

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  • A substrate-guided catheter ablation strategy successfully isolated the right ventricular aneurysm.
  • All abnormal electrical activities were abolished, leading to resolution of the electrical storms.
  • The integration of advanced imaging (intracardiac echocardiography) with electroanatomical mapping enhanced procedural efficacy and safety.

Implications:

  • This case demonstrates the feasibility and effectiveness of advanced ablation techniques in managing complex ventricular arrhythmias associated with systemic scleroderma.
  • Utilizing detailed cardiac imaging and mapping can improve the understanding and treatment of challenging arrhythmogenic substrates.
  • Substrate-guided ablation offers a promising approach for patients with structural heart disease and refractory arrhythmias.