Journal article

Non-invasive assessment of ventricular force-frequency relations in the univentricular circulation by tissue Doppler echocardiography: a novel method of assessing myocardial performance in congenital heart disease.

MMH Cheung, JF Smallhorn, BW McCrindle, GS Van Arsdell, AN Redington

Heart | Published : 2005

Abstract

OBJECTIVE: To describe the first clinical application of a novel tissue Doppler derived index of contractility, isovolumic acceleration (IVA), in the assessment of the ventricular myocardial force-frequency relation (FFR) in the univentricular heart (UVH). DESIGN: Prospective study. SETTING: Tertiary referral centre. INTERVENTIONS: Non-invasive assessment of the myocardial FFR by tissue Doppler echocardiography during atrial pacing. RESULTS: IVA was used to measure the FFR of the systemic ventricle in patients with structurally normal hearts and in patients with UVHs. Basal IVA of the normal hearts (mean (SD) 1.9 (0.3) m/s2) was significantly greater than that of UVHs in patients with a domi..

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