Early diastolic mitral annular velocity at the interventricular septal annulus correctly reflects left ventricular longitudinal myocardial relaxation

Okada, Kazunori; Mikami, Taisei; Kaga, Sanae; Onozuka, Hisao; Inoue, Mamiko; Yokoyama, Shinobu; Nishino, Hisao; Nishida, Mutsumi; Matsuno, Kazuhiko; Iwano, Hiroyuki; Yamada, Satoshi; Tsutsui, Hiroyuki

Early diastolic mitral annular velocity at the interventricular septal annulus correctly reflects left ventricular longitudinal myocardial relaxation

Okada, Kazunori; Mikami, Taisei; Kaga, Sanae et al.

European Heart Journal, Cardiovascular Imaging, 2011, 12(12), 917-923

Permalink : https://hdl.handle.net/2115/50013

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アクセス権	open access
URI	https://hdl.handle.net/2115/50013
タイトル	Early diastolic mitral annular velocity at the interventricular septal annulus correctly reflects left ventricular longitudinal myocardial relaxation
著者	Okada, Kazunori ; Mikami, Taisei ; Kaga, Sanae ; Onozuka, Hisao ; Inoue, Mamiko ; Yokoyama, Shinobu ; Nishino, Hisao ; Nishida, Mutsumi ; Matsuno, Kazuhiko ; Iwano, Hiroyuki ; Yamada, Satoshi ; Tsutsui, Hiroyuki
著者名 Okada, Kazunori
e-Rad_Researcher 90250456 著者名 Mikami, Taisei
著者名 Kaga, Sanae
著者名 Onozuka, Hisao
著者名 Inoue, Mamiko
著者名 Yokoyama, Shinobu
著者名 Nishino, Hisao
e-Rad_Researcher 90404722 著者名 Nishida, Mutsumi
e-Rad_Researcher 70102332 著者名 Matsuno, Kazuhiko
著者名 Iwano, Hiroyuki
e-Rad_Researcher 80374320 著者名 Yamada, Satoshi
e-Rad_Researcher 70264017 著者名 Tsutsui, Hiroyuki
言語	英語
キーワード	Tissue Doppler imaging
	Early diastolic mitral annular velocity
	Two-dimensional speckle tracking imaging
	Left ventricular longitudinal myocardial relaxation
発行日	2011-12
出版者	Oxford University Press
収録物名	European Heart Journal, Cardiovascular Imaging
巻(号)	12(12)
ページ	917-923
抄録	Aims: Early diastolic mitral annular velocity (e') obtained by tissue Doppler imaging (TDI) is widely used to evaluate left ventricular (LV) diastolic function based on the assumption that it reflects myocardial relaxation in the long-axis direction. In this study, we aimed to determine whether or not e' truly reflects early diastolic longitudinal myocardial relaxation, and which is the most useful for evaluating LV diastolic function among e' measured at the interventricular-septal annulus (IS-e'), that measured at the lateral annulus (LW-e') or their mean value (M-e'). Methods and results: IS-e', LW-e', and M-e' were measured using colour TDI in 15 patients with hypertrophic cardiomyopathy, 13 patients with hypertension and 19 control subjects. Using two-dimensional speckle tracking imaging, early diastolic myocardial strain rates (SR_[E]) were measured for the IS (IS-SR_[E]), LW(LW-SR_[E]) and entire LV myocardium (G-SR_[E]). IS-e' was excellently correlated with IS-SR_[E] (r = 0.90, P < 0.001); the correlation was better than that between LW-e' and LW-SR_[E] (r = 0.75, P < 0.001). IS-e' and M-e' were well correlated with G-SR_[E] (r = 0.88, P < 0.001 and r = 0.86, P < 0.001, respectively) and with LV early diastolic flow propagation velocity (r = 0.77, P < 0.001 and r = 0.78, P < 0.001, respectively). The correlations of LW-e' to G-SR_[E] (r = 0.80, P < 0.001) and flow propagation velocity (r = 0.75, P < 0.001) did not reach this level. Conclusion: IS-e' well reflected LV longitudinal myocardial relaxation and LV diastolic function, and was found to be more useful in evaluating LV diastolic function than LW-e'.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a pre-copy-editing, author-produced PDF of an article accepted for publication in European Heart Journal, Cardiovascular Imaging following peer review. The definitive publisher-authenticated version Eur J Echocardiogr (2011) 12(12): 917-923 is available online at: http://ehjcimaging.oxfordjournals.org/content/12/12/917.
PISSN	1525-2167
関連情報	PMID 21908514
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1093/ejechocard/jer154