What question did this study set out to answer?

To identify and eliminate the true arrhythmogenic substrate of sustained monomorphic ventricular tachycardia mimicking an apical septal origin in a patient with dilated-phase hypertrophic cardiomyopathy.

July 14, 2015Journal of ArrhythmiaOpen Access

Identifying the true origin of sustained monomorphic ventricular tachycardia associated with dilated‐phase hypertrophic cardiomyopathy: A case of successful catheter ablation

Q: What is the clinical evidence from this study?

Study design: Case Report. Population: Sustained monomorphic ventricular tachycardia associated with dilated-phase hypertrophic cardiomyopathy (n=1). Intervention: Epicardial catheter ablation. Primary outcome: Resolution of ventricular tachycardia.

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Key result

Epicardial ablation resolves sustained monomorphic VT in a patient with dilated-phase HCM.

Why the study?

Does epicardial catheter ablation resolve sustained monomorphic ventricular tachycardia in a patient with dilated-phase hypertrophic cardiomyopathy?

Population

A patient with sustained monomorphic ventricular tachycardia caused by a large epicardial scar, related to…

Design

Case_report

Authors

HKHiroshi KawakamiEhime University TNTakayuki NagaiTsurumi University AFAkira FujiiToyooka Hospital

Discussion

Member takes

Implication

May support epicardial ablation in select dilated-phase HCM VT cases; leaves open generalizability and requires prospective validation.

Key Points

To identify and eliminate the true arrhythmogenic substrate of sustained monomorphic ventricular tachycardia mimicking an apical septal origin in a patient with dilated-phase hypertrophic cardiomyopathy.
Evaluated a patient with dilated-phase hypertrophic cardiomyopathy presenting with sustained monomorphic ventricular tachycardia using 12-lead surface electrocardiography.
Mapped the ventricular reentrant circuit and targeted an extensive epicardial scar using epicardial catheter ablation.
Targeted epicardial catheter ablation successfully terminated the sustained monomorphic ventricular tachycardia.
Surface 12-lead electrocardiography reflected only the circuit exit site, which was anatomically remote from the critical reentrant isthmus within the epicardial scar.

Study Design

Type

Case Report (n=1)

Structured PICO

Does epicardial catheter ablation resolve sustained monomorphic ventricular tachycardia in a patient with dilated-phase hypertrophic cardiomyopathy?

Population

A patient with sustained monomorphic ventricular tachycardia caused by a large epicardial scar, related to dilated-phase hypertrophic cardiomyopathy

Intervention

Epicardial catheter ablation

Outcome

Resolution of ventricular tachycardia

Epicardial catheter ablation can successfully treat sustained monomorphic VT in dilated-phase hypertrophic cardiomyopathy, highlighting that surface ECG may only show the exit site and not the true origin.

Cite This Study

Kawakami et al. (2015) conducted a case report in Sustained monomorphic ventricular tachycardia associated with dilated-phase hypertrophic cardiomyopathy (n=1). Epicardial catheter ablation was evaluated on Resolution of ventricular tachycardia. Epicardial catheter ablation successfully resolved sustained monomorphic ventricular tachycardia caused by a large epicardial scar in a patient with dilated-phase hypertrophic cardiomyopathy.

synapsesocial.com/papers/6a0ecb281c5e2d2319f9e12c https://doi.org/10.1016/j.joa.2015.06.003

Topics

Hypertrophic cardiomyopathy Ventricular arrhythmias

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Identifying the true origin of sustained monomorphic ventricular tachycardia associated with dilated‐phase hypertrophic cardiomyopathy: A case of successful catheter ablation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Topics

Identifying the true origin of sustained monomorphic ventricular tachycardia associated with dilated‐phase hypertrophic cardiomyopathy: A case of successful catheter ablation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider