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Atrioventricular plane displacement correlates closely to circulatory dimensions but not to ejection fraction in normal young subjects
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- Carlhäll, Carljohan, 1973- (författare)
- Linköpings universitet,Klinisk fysiologi,Hälsouniversitetet
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- Lindström, Lena (författare)
- Linköpings universitet,Klinisk fysiologi,Hälsouniversitetet
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- Wranne, Bengt, 1940- (författare)
- Linköpings universitet,Klinisk fysiologi,Hälsouniversitetet
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- (creator_code:org_t)
- 2008-10-09
- 2001
- Engelska.
- Ingår i: Clinical Physiology. - : Wiley. - 0144-5979 .- 1365-2281. ; 21:5, s. 621-628
- Tidskriftsartikel (refereegranskat)
Abstract
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- Aims Mitral atrioventricular plane displacement (AVPD) provides information about left ventricular systolic function. M-mode of systolic annulus amplitude or tissue Doppler imaging of systolic annulus velocity are the current methods of evaluating AVPD. A correlation to ejection fraction (EF) has been demonstrated in patients with coronary artery disease and left ventricular dysfunction. Our aim was (i) to investigate the mitral AVPD of normal subjects with different physical work capacities and (ii) to further evaluate AVPD as an index of left ventricular systolic function.Methods and results Twenty-eight healthy men mean age 28 years (20–39) were included: endurance trained (ET) (n=10), strength trained (ST) (n=9) and untrained (UT) (n=9). The systolic AVPD was recorded at four sites, septal, lateral, anterior and posterior, using M-mode. Left ventricular volumes were calculated according to Simpson’s rule. Systolic AVPD was higher in endurance trained, 16·9 ± 1·5 mm, as compared with both strength trained, 13 ± 1·6 (P<0·001) and untrained, 14 ± 1·6 (P<0·001). Left ventricular systolic AVPD correlated strongly with end-diastolic volume (r=0·82), stroke volume (r=0·80) and maximal oxygen consumption per body weight (r=0·72). The correlation between AVPD and EF was poor (r=0·22).Conclusion In the subjects studied, with a range of normal cardiac dimensions, AVPD correlated to stroke volume, end-diastolic volume and maximal oxygen consumption per body weight, but not to EF. On theoretical grounds, it also seems reasonable that a dimension like AVPD is related to other cardiac dimensions and volumes, rather than to a fraction, like EF. AVPD is one parameter that is useful for evaluation of left ventricular systolic function but is not interchangeable with other measurements such as EF.
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