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Estimation of global left ventricular function from the velocity of longitudinal shortening

Vinereanu, Dragos, Khokhar, Azhar, Tweddel, Ann C., Cinteza, Mircea and Fraser, Alan Gordon 2002. Estimation of global left ventricular function from the velocity of longitudinal shortening. Echocardiography -Mount Kisco- 19 (3) , pp. 177-185. 10.1046/j.1540-8175.2002.00177.x

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AIMS: To determine if global ventricular function can be assessed from the long-axis contraction of the left ventricle, we compared pulsed-wave Doppler myocardial imaging of mitral annular motion to radionuclide ventriculography. METHODS AND RESULTS: We studied 51 patients (56 +/- 10 years, 11 women) with a radionuclide ejection fraction of 52 +/- 13% (15%-70%). Peak systolic velocities of medial and lateral mitral annular motion correlated with ejection fraction (0.55 and 0.54, respectively; P < 0.001), as did the time-velocity integrals (0.57 and 0.58, respectively; P < 0.001). Correlations were higher in normal ventricles (0.62-0.69) than in patients with previous myocardial infarction (0.39-0.64). Patients with anterior myocardial infarction had the lowest correlations (0.39-0.46). The best differentiation of normal (> or = 50%) from abnormal (< 50%) ejection fraction was provided by peak systolic velocity > or = 8 cm/sec for the medial (sensitivity 80%, specificity 89%) or lateral (sensitivity 80%, specificity 92%) mitral annulus. CONCLUSION: Global left ventricular function can be estimated by recording mitral annular velocity. The implementation of a cutoff limit of 8 cm/sec gave a simple guide for differentiating between normal and abnormal left ventricular systolic function that might be useful clinically in patients without regional wall-motion abnormalities. However, in patients with important segmental wall-motion abnormalities during systole, left ventricular longitudinal shortening is an imperfect surrogate for ejection fraction.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
R Medicine > RZ Other systems of medicine
Uncontrolled Keywords: Doppler myocardial imaging; left ventricle; mitral annulus; systolic function.
Publisher: Wiley-Blackwell
ISSN: 0742-2822
Last Modified: 04 Jun 2017 07:50

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