What is the clinical evidence from this study?

Study design: Observational. Population: Ventricular tachycardia and arrhythmogenic right ventricular cardiomyopathy/dysplasia (n=11). Intervention: Three-dimensional electroanatomical mapping and radiofrequency ablation. Primary outcome: Ventricular tachycardia mechanisms and ablation success.

What question did this study set out to answer?

This research aims to explore the mechanisms of ventricular tachycardia in Arrhythmogenic Right Ventricular Dysplasia using electroanatomical mapping.

September 23, 2005EP EuropaceOpen Access

Electroanatomic mapping characteristics of ventricular tachycardia in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia

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Key result

Three-dimensional electroanatomical mapping identified a reentry mechanism in 8 of 12 induced ventricular tachycardias in ARVD patients, with linear radiofrequency ablation successful in 7 of 8 cases.

Population

11 patients with well tolerated sustained ventricular tachycardia and arrhythmogenic right ventricular…

Design

Case_series

Follow-up

9-50 months

Authors

HMHielko MiljoenElectrophysiology SSSimona StateVall d'Hebron Hospital Universitari CDC DECHILLOUCentre Hospitalier Régional et Universitaire de Nancy

Discussion

Member takes

Implication

Supports peritricuspid reentry as ablation target in ARVD; leaves open durability in larger prospective cohorts.

Key Points

This research aims to explore the mechanisms of ventricular tachycardia in Arrhythmogenic Right Ventricular Dysplasia using electroanatomical mapping.
Three-dimensional electroanatomical mapping conducted in 11 patients with sustained VT and ARVD.
Sinus rhythm mapping performed in eight patients, identifying low voltage areas (<1.2 mV).
Induced and mapped 12 tachycardias, assessing their characteristics and mechanisms.
Eight out of 12 tachycardias demonstrated a reentry mechanism, localized mainly to the peritricuspid area.
Successful RF ablation achieved in 7 of 8 reentrant tachycardias; 50% success in focal VT ablations.
During a follow-up of 9-50 months, VT recurred in four of eight initially successful ablations.

Study Design

Type

Observational (n=11)

Structured PICO

Population

11 patients with well tolerated sustained ventricular tachycardia and arrhythmogenic right ventricular cardiomyopathy/dysplasia, followed for 9-50 months.

Exposure

Three-dimensional electroanatomical mapping and linear radiofrequency ablation

Outcome

Ventricular tachycardia mechanisms and characteristics of their circuits

Detailed 3D electroanatomical mapping identifies peritricuspid ventricular reentry as a frequent mechanism of VT in ARVD patients, which can help guide radiofrequency ablation.

Cite This Study

Miljoen et al. (2005) conducted an observational in Ventricular tachycardia and arrhythmogenic right ventricular cardiomyopathy/dysplasia (n=11). Three-dimensional electroanatomical mapping and radiofrequency ablation was evaluated on Ventricular tachycardia mechanisms and ablation success. Three-dimensional electroanatomical mapping identified a reentry mechanism in 8 of 12 induced ventricular tachycardias in ARVD patients, with linear radiofrequency ablation successful in 7 of 8 cases.

synapsesocial.com/papers/6a22fd34d6da8eab4757ec85 https://doi.org/10.1016/j.eupc.2005.07.004

Topics

Ventricular arrhythmias

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Electroanatomic mapping characteristics of ventricular tachycardia in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Topics

Electroanatomic mapping characteristics of ventricular tachycardia in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

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Topics

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