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Substrate Ablation for Ventricular Tachycardia

An advanced ablation technique in which reentrant VT circuits within scarred myocardium are interrupted using electrophysiologic mapping.

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Kardiyoloji department. Book Appointment →

What is Substrate Ablation for Ventricular Tachycardia?

Ventricular tachycardia (VT) substrate ablation is an advanced electrophysiology procedure used primarily in patients with scar-related monomorphic VT from ischemic or non-ischemic cardiomyopathy. Three-dimensional electroanatomic mapping is used to survey the endocardium of the right and/or left ventricle and, when needed, the epicardium.

Low-voltage areas within scar and border zones, late potentials and local abnormal ventricular activity (LAVA) are annotated to identify reentrant circuits and ablated with radiofrequency energy. The procedure ends when induction testing no longer triggers the clinical VT.

Substrate ablation can be life-saving in patients with recurrent ICD shocks, drug-refractory VT and electrical storm.

Symptoms

Palpitations and non-sustained VT
Syncope or presyncope
Recurrent ICD shocks
Chest pain
Dyspnea
Fatigue
Worsening heart failure

Risk Factors

Prior myocardial infarction
Advanced structural cardiomyopathy
Pre-existing ICD
Failure of antiarrhythmic therapy
Electrical storm
Low ejection fraction
Specific substrates such as sarcoidosis or ARVC

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Multiple ICD shocks
  • New-onset sustained palpitations
  • Syncope
  • VT recurrence on antiarrhythmic therapy
  • New dyspnea or edema
  • Electrical storm

Treatment Methods

01
Three-dimensional electroanatomic mapping
02
Radiofrequency substrate ablation
03
Epicardial access when required
04
Optimization of ICD programming
05
Combination antiarrhythmic therapy
06
Treatment of the underlying disease
07
Ablation with mechanical circulatory support when needed

Which Department to Visit?

You can visit our Kardiyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.