What is the clinical evidence from this study?

Study design: Cohort. Population: Left ventricular scar-related ventricular tachycardia (n=101). Intervention: Scar dechanneling alone vs. Scar dechanneling followed by ablation of residual inducible VT. Primary outcome: Event-free survival (p=0.013).

What question did this study set out to answer?

This research aims to assess the efficacy of scar dechanneling in limiting ablation in ventricular tachycardia cases.

January 13, 2015Circulation Arrhythmia and Electrophysiology

Scar Dechanneling

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Key result

Scar dechanneling alone is associated with ~80% 2-year event-free survival versus requiring additional VT ablation.

P=0.013
n=101

Why the study?

Does scar dechanneling alone improve event-free survival and reduce procedural burden compared to requiring additional ablation in patients with left ventricular scar-related VT?

Population

101 consecutive patients with left ventricular scar-related VT

Comparison

Scar dechanneling vs Patients requiring additional ablation for…

Design

Cohort

Follow-up

2 years

Authors

ABAntonio BerruezoElectrophysiology JFJuan Fernández‐ArmentaElectrophysiology DADavid AndreuRutgers, The State University of New Jersey

Discussion

Member takes

Implication

May support prioritizing scar dechanneling in LV scar-related VT; hypothesis-generating and requires randomized confirmation before practice change.

Key Points

This research aims to assess the efficacy of scar dechanneling in limiting ablation in ventricular tachycardia cases.
Included 101 patients with left ventricular scar-related VT, with a focus on eliminating conducting channels.
Evaluated outcomes post-scar dechanneling and subsequent ablation of residual VT.
Measured procedure duration, number of radiofrequency applications, and safety outcomes.
Scar dechanneling achieved noninducibility in 54.5% of patients; total ablation increased this to 78.2%.
Those needing only scar dechanneling had significantly shorter procedures (213 minutes vs 244 minutes, P=0.027) and fewer complications.
At 2 years, event-free survival was higher in the scar dechanneling group (80% vs 62%) with a lower mortality rate (5% vs 11%).

Study Design

Type

Cohort (n=101)

Structured PICO

Does scar dechanneling alone improve event-free survival and reduce procedural burden compared to requiring additional ablation in patients with left ventricular scar-related VT?

Population

101 consecutive patients with left ventricular scar-related VT (75 ischemic patients; left ventricular ejection fraction, 36 ± 13%)

Intervention

Scar dechanneling (elimination of all identified conducting channels by ablation at the entrance)

Comparator

Patients requiring additional ablation for residual inducible VT

Outcome

Event-free survival at 2 yearscomposite

Main Result

Absolute Event Rate: 80% vs 62%

p-value: p=0.013

Scar dechanneling alone achieves noninducibility in over half of patients with LV scar-related VT, leading to shorter procedures and better long-term outcomes compared to those requiring additional ablation.

Cite This Study

Berruezo et al. (2015) conducted a cohort in Left ventricular scar-related ventricular tachycardia (n=101). Scar dechanneling alone vs. Scar dechanneling followed by ablation of residual inducible VT was evaluated on Event-free survival (p=0.013). Scar dechanneling alone achieved 80% event-free survival at 2 years compared to 62% in patients requiring additional ablation for residual inducible VT (log-rank P=0.013).

synapsesocial.com/papers/6a0ec7b52eca052da647c7c5 https://doi.org/10.1161/circep.114.002386

Topics

Ventricular arrhythmias AF ablation outcomes

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Implication

May support prioritizing scar dechanneling in LV scar-related VT; hypothesis-generating and requires randomized confirmation before practice change.

Scar Dechanneling

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Topics

Scar Dechanneling

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

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Topics

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