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01-09-2016 | Special Article

Challenges for ‘diastology’: contributions from Japanese researchers

Authors: Takashi Oki, Hirokazu Miyoshi, Yoshifumi Oishi, Yukio Mizuguchi, Arata Iuchi, Hirotsugu Yamada, Satoshi Nakatani

Published in: Journal of Echocardiography | Issue 3/2016

Abstract

Diastology is a study to treat diastole of the heart. Transmitral flow and pulmonary venous flow velocities recorded by pulsed Doppler echocardiography provide more important information about left ventricular (LV) diastolic dysfunction [left atrial (LA)−LV coupling] than cardiac catheterization in clinical practice; however, these waveforms are influenced by loading conditions, particularly preload. The early diastolic mitral annular and LV wall motion indices measured by tissue Doppler echocardiography can evaluate LV relaxation abnormality and filling pressure by being relatively preload independent. In addition, the role of concomitant systolic longitudinal dysfunction is well characterized in asymptomatic patients and in patients with heart failure and preserved ejection fraction. Two-dimensional speckle tracking echocardiography is an angle-independent method, and has the potential to evaluate the contraction and relaxation abnormalities in the longitudinal, circumferential, and radial directions of the LV myocardium as well as LV torsion/untwisting and, moreover, deformation of the LA myocardium and large arterial wall. As a result, this new technique can facilitate the early detection of impaired LA−LV−arterial coupling in patients before occurrence of overt heart failure symptoms.

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Title: Challenges for ‘diastology’: contributions from Japanese researchers
Authors: Takashi Oki
Hirokazu Miyoshi
Yoshifumi Oishi
Yukio Mizuguchi
Arata Iuchi
Hirotsugu Yamada
Satoshi Nakatani
Publication date: 01-09-2016
Publisher: Springer Japan
Published in: Journal of Echocardiography / Issue 3/2016
Print ISSN: 1349-0222
Electronic ISSN: 1880-344X
DOI: https://doi.org/10.1007/s12574-016-0307-3

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Challenges for ‘diastology’: contributions from Japanese researchers

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