Voltage mapping and right ventriculography to guide ablation for arrhythmogenic right ventricular cardiomyopathy ventricular tachycardia: a case report

Figures

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  Fig. 1. Preoperative and intraoperative twelve-lead surface electrocardiogram. (A). Three different forms of PVC before operation; (B). Electrocardiogram during operation showed VT

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  Fig. 2. Right ventriculography and voltage matrix mapping in sinus rhythm. (A). Right ventricular angiography shows the formation of right ventricular apical aneurysm, and the local systolic motion was weakened (dotted line); (B). Voltage matrix mapping under sinus rhythm showed a large area of low voltage in the right ventricular apical aneurysm

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  Fig. 3. Late potential mapping results of right ventricular apical aneurysms in sinus rhythm. (A). The late potential mapping results indicated that the latest activation was located in the aneurysm; (B). A large number of low-amplitude fragmented late potentials were recorded in the aneurysm

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  Fig. 4. Ablation of voltage matrix homogenization associated with right ventricular apical aneurysm. (A). Homogenized ablation point in the low-voltage area of ventricular aneurysm( saline perfusion mode: power 35 W, maximum temperature 43℃, flow rate 17 ml/min ); (B). Short-term paroxysmal VT stimulated during ablation