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Mitral annulus motion versus long-axis fractional shortening
Department of Clinical Physiology, Karlskoga Hospital, Karlskoga, Sweden; Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden.
Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden.
Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden.
Department of Clinical Physiology, Sahlgrens University Hospital, Gothenburg, Sweden.
2006 (English)In: Experimental & clinical cardiology, ISSN 1918-1515, Vol. 11, no 4, p. 302-304Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: In most echocardiographic studies concerning mitral annulus motion (MAM) in the assessment of left ventricular (LV) systolic function, comparisons have been performed between MAM, which represents a distance, and ejection fraction (EF), which represents a ratio between volumes. However, in theory, it is probably more suitable to compare the long-axis fractional shortening (FS(L)) (the ratio between the change in length [ie, MAM] and the end-diastolic length of the left ventricle) with EF. OBJECTIVES: To compare EF with MAM and EF with FS(L) in the assessment of LV systolic function. METHODS: Thirty healthy subjects were investigated using echo-cardiography, and the linear correlations between EF and MAM, and EF and FS(L) were calculated. RESULTS: The linear correlation (r) was found to be higher between EF and FS(L) (r=0.65; P<0.001) than between EF and MAM (r=0.49; P<0.01). CONCLUSIONS: The higher correlation between EF and FS(L) than between EF and MAM suggests that FS(L), which includes a correction for ventricular length, may be a more suitable index of LV systolic function than MAM per se.

Place, publisher, year, edition, pages
2006. Vol. 11, no 4, p. 302-304
Keyword [en]
Echocardiography; Left ventricular ejection fraction; Left ventricular function; Systolic function
National Category
Cardiac and Cardiovascular Systems
Research subject
Cardiology
Identifiers
URN: urn:nbn:se:oru:diva-12038ISI: 000244816600014PubMedID: 18651022Scopus ID: 2-s2.0-33845578734OAI: oai:DiVA.org:oru-12038DiVA: diva2:355099
Available from: 2010-10-05 Created: 2010-10-05 Last updated: 2017-10-17Bibliographically approved

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Emilsson, KentNygren, Britt MarieWandt, Birger

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