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Related Experiment Videos

Successful external cardioversion for ventricular tachycardia using 2 Joules

H D Papaconstantinou1, C J Burrell

  • 1Department of Cardiology, Derriford Hospital, Plymouth, UK.

International Journal of Cardiology
|February 1, 1997
PubMed
Summary

This study shows low-energy external cardioversion effectively treats recurrent ventricular tachycardia after heart attack when drugs fail. This method may prevent heart damage in patients avoiding implantable defibrillators.

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Disease progression and adverse events in patients listed for elective percutaneous coronary intervention.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Internal Medicine

Background:

  • Recurrent sustained monomorphic ventricular tachycardia (SMVT) poses a significant risk post-myocardial infarction.
  • Drug therapy is often the first line of treatment, but can be refractory in some patients.
  • Implantable cardioverter-defibrillators (ICDs) are effective but carry risks and patient reluctance is common.

Observation:

  • A patient with drug-refractory SMVT post-myocardial infarction was hesitant to receive an ICD.
  • The patient demonstrated a positive response to transthoracic direct current cardioversion (TDCV).
  • Cardioversion was administered using very low energy levels via external pacing electrodes under sedation.

Findings:

  • Very low energy TDCV successfully terminated recurrent SMVT in this patient.

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  • The procedure was well-tolerated under sedation.
  • This approach offers an alternative for patients unwilling or unable to undergo ICD implantation.

    • Implications:

    • Very low energy TDCV may be a viable, less invasive alternative for managing recurrent ventricular tachycardia.
    • This method could potentially mitigate the risk of myocardial damage associated with higher energy cardioversion shocks.
    • Further research is warranted to establish the safety and efficacy of this low-energy approach in a broader patient population.