Table 1

Role of advanced mapping systems based on arrhythmia

Limited role for advanced mapping (high conventional success rate)Advanced mapping shortens procedure, limits fluoroscopy, or enhances successAdvanced mapping extremely helpful or essential
AVNRT, atriventricular nodal re-entrant tachycardia; LVOT, left ventricular outflow tract; RVOT, right ventricular outflow tract, VT, ventricular tachycardia.
AVNRTTypical atrial flutterMacroreentrant atrial arrhythmias after surgical correction of congenital heart disease
Accessory pathway ablationIdiopathic ventricular tachycardia (RVOT, LVOT, fascicular VT)Transient/multiple focal atrial tachycardias
AV junction ablation (for rate control in atrial fibrillation)Repeat ablation after previously failed attemptHaemodynamically unstable VT
Haemodynamically stable VT (non-idiopathic)Atrial fibrillation: linear lesions for atrial compartmentalisation procedures; also useful, but role less defined for encircling pulmonary vein isolation and non-pulmonary vein focus localisation