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Normal values and clinical relevance of left atrial myocardial function analysed by speckle-tracking echocardiography: multicentre study.
MedLine Citation:
PMID:  25368210     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: The aim of this multicentre study was to determine the normal range and the clinical relevance of the myocardial function of the left atrium (LA) analysed by 2D speckle-tracking echocardiography (2DSTE).
METHODS AND RESULTS: We analysed 329 healthy adult subjects prospectively included in 10 centres and a validation group of 377 patients with left ventricular diastolic dysfunction (LVDD). LA myocardial function was analysed by LA strain rate peak during LA contraction (LA-SRa) and LA strain peak during LA relaxation (LA-Strain). The range of values of LA myocardial function in healthy subjects was LA-SRa -2.11 ± 0.61 s(-1) and LA-Strain 45.5 ± 11.4%, and the lowest expected values of these LA analyses (calculated as -1.96 SD from the mean of healthy subjects) were LA-SRa -0.91 s(-1) and LA-Strain 23.1%. Concerning the clinical relevance of these LA myocardial analyses, LA-SRa and LA-Strain detected subtle LA dysfunction in patients with LVDD, even though LA volumetric measurements were normal. In addition, in these patients we found that the functional class (dyspnoea-NYHA classification) was inversely related to both LA-Strain and LA-SRa.
CONCLUSION: In the present multicentre study analysing a large cohort of healthy subjects and patients with LVDD, the normal range and the clinical relevance of the myocardial function of the LA using 2DSTE have been determined.
Authors:
Daniel A Morris; Masaaki Takeuchi; Maximilian Krisper; Clemens Köhncke; Tarek Bekfani; Tim Carstensen; Sabine Hassfeld; Marc Dorenkamp; Kyoko Otani; Kiyohiro Takigiku; Chisato Izumi; Satoshi Yuda; Konomi Sakata; Nobuyuki Ohte; Kazuaki Tanabe; Engin Osmanoglou; York Kühnle; Hans-Dirk Düngen; Satoshi Nakatani; Yutaka Otsuji; Wilhelm Haverkamp; Leif-Hendrik Boldt
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-3
Journal Detail:
Title:  European heart journal cardiovascular Imaging     Volume:  -     ISSN:  2047-2412     ISO Abbreviation:  Eur Heart J Cardiovasc Imaging     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-4     Completed Date:  -     Revised Date:  2014-11-5    
Medline Journal Info:
Nlm Unique ID:  101573788     Medline TA:  Eur Heart J Cardiovasc Imaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2014. For permissions please email: journals.permissions@oup.com.
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