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[Myocardial dysfunction secondary to persistent tachycardia].

D T Hachul, E A Sosa, M Barbero-Marcial

    Arquivos Brasileiros De Cardiologia
    |December 1, 1989
    PubMed
    Summary
    This summary is machine-generated.

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    Incessant atrioventricular tachycardia (IAVT) can cause reversible ventricular dysfunction. Surgical ablation of the anomalous pathway effectively restored normal heart function and eliminated tachycardia in patients refractory to medication.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Cardiac Surgery

    Context:

    • Incessant atrioventricular tachycardia (IAVT) is a significant arrhythmia.
    • Patients with IAVT often experience ventricular dysfunction.
    • Drug-refractory cases pose a clinical challenge.

    Purpose:

    • To evaluate the impact of surgical ablation on ventricular dysfunction in IAVT patients.
    • To assess the efficacy of treating IAVT with a focus on myocardial recovery.

    Summary:

    • This study investigated five patients with IAVT and ventricular dysfunction who underwent surgical ablation.
    • Preoperative assessments revealed persistent tachycardia and impaired ejection fraction (mean 49.6%).
    • Post-ablation, patients were asymptomatic with normalized heart rates and improved ejection fraction (mean 71.6%), demonstrating reversible myocardial dysfunction.

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    Impact:

    • Surgical ablation is a viable treatment for drug-refractory IAVT.
    • Restoration of normal sinus rhythm reverses tachycardia-induced ventricular dysfunction.
    • This approach improves cardiac function and patient outcomes.