Indications
-
• Evaluation of tachycardia mechanism, in preparation for catheter ablation procedure.
• Evaluation of wide QRS tachycardia, where ECG interpretation does not clarify mechanism of tachycardia.
• Evaluation of sudden cardiac arrest.
• Evaluation of unexplained syncope.
• Risk stratification for risk of cardiac arrest in patients with repaired congenital heart disease.
• Evaluation of conduction system, or risk of tachycardia, particularly prior to surgery for congenital heart disease.
Contraindications
Equipment
Risks
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• Vascular injury, peripheral or coronary.
• Bleeding.
• Infection.
• Pneumothorax.
• Cardiac perforation.
• Thromboembolism.
• Initiation of hemodynamically unstable arrhythmia, or conversion of one mechanism of tachycardia into another tachycardia.
• Arrhythmias may require direct current cardioversion or defibrillation.
• Radiation exposure.
• Risk of death: < 0.5%.
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