Echocardiographic features of left atrium in elite male athletes

Toutouzas, Konstantinos; Trikas, Athanasios; Pitsavos, Christos; Barbetseas, John; Androulakis, Aristides; Stefanadis, Christodoulos; Toutouzas, Pavlos

doi:10.1016/s0002-9149(96)00622-4

Cited by 52 publications

(41 citation statements)

References 17 publications

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“…Increased reservoir function may play an important role in accelerating left ventricular filling by helping to maintain an enhanced atrioventricular pressure gradient during diastole (25). Our present results clearly demonstrate a close relationship between the LA total emptying volume and rapid emptying volume in hypertensive patients with PAF.…”

Section: La Conduit Functionsupporting

confidence: 67%

Enhanced Left Atrial Reservoir, Increased Conduit, and Weakened Booster Pump Function in Hypertensive Patients with Paroxysmal Atrial Fibrillation

et al. 2008

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Section: La Conduit Functionsupporting

confidence: 67%

Enhanced Left Atrial Reservoir, Increased Conduit, and Weakened Booster Pump Function in Hypertensive Patients with Paroxysmal Atrial Fibrillation

et al. 2008

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“…22) During exercise, the LA reservoir and active pumping function are augmented, nevertheless, its conduit facilities remain unchanged. 9) To maintain LV filling at an optimum level during hemodynamic changes, the LA reservoir, conduit, and pumping function should work in harmony. It was reported that the LA contribution to LV filling increased as a compensatory mechanism in patients with asymptomatic or mildly symptomatic DCM, and therefore, stroke volume was relatively maintained.…”

Section: Discussionmentioning

confidence: 99%

“…5) In patients with severe heart failure, compensatory LA contraction is decreased as a result of increased workload imposed on the LA myocardium due to increased LV diastolic wall stress and intrinsic LA dysfunction. 9,23) Decreased LA function and increased LA dimensions are associated with decreased exercise capacity. 24) The results of this study indicate that LAEF and LA sizes are significantly related to peak oxygen uptake.…”

Section: Discussionmentioning

confidence: 99%

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<b>Value of Left Atrial Function in Predicting Exercise Capacity in Heart Failure With Moderate to Severe Left Ventricular Systolic Dysfunction</b>

et al. 2005

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SUMMARYLeft atrial (LA) function is associated with left ventricular (LV) diastolic filling and cardiac output response to exercise. But the relation between LA function and exercise performance has not been adequately evaluated.The aim of this study was to investigate the relation between LA function and exercise capacity in dilated cardiomyopathy (DCM) with cardiopulmonary exercise testing.Forty-four patients with a left ventricular end-diastolic dimension (LVDd) ≥ 60 mm and an ejection fraction (EF) ≤ 40%, and in normal sinus rhythm were included in this study. Patients were divided into group 1 and group 2 according to their exercise peak oxygen uptake (VO 2 ) (group 1: peak VO 2 >14 mL/kg/min, group 2: peak VO 2 ≤ 14 mL/ kg/min). LA function indices were defined as follows: LA end-systolic diameter (LASd), end-diastolic diameter (LADd), LA systolic volume (LASV), LA diastolic volume (LADV), LA ejection volume (LAEV), and LA ejection fraction (LAEF).LASd, LADd, LASV, and LADV were significantly increased in group 2 (P < 0.001, P < 0.001, P < 0.05, P < 0.005). Group 1 had significantly higher LAEF (P < 0.001 ) and LVEF (P < 0.05). Group 2 had significantly shorter exercise duration, and decreased anaerobic threshold levels and minute ventilation volumes (P < 0.001, P < 0.001, P < 0.005 ). There was a positive correlation between peak VO 2 and LVEF (r = 0.46, P = 0.002), and LAEF (r = 0.61, P < 0.001), peak A wave velocity (r = 0.39, P = 0.009), E wave deceleration time (r = 0.56, P < 0.001), and isovolumic relaxation time (IVRT) (r = 0.35, P = 0.04). There was a negative correlation between peak VO 2 and LASd (r = -0.53, P < 0.001) LADd (r = -0.59, P < 0.001), LASVI (r = -0.34, P = 0.027), LADVI (r = -0.37, P = 0.001), and the E/A ratio (r = -0.41, P = 0.006), Decreased LAEF and increased LA sizes were associated with decreased peak VO 2 . The results clearly demonstrate that LA functions at rest are related to exercise performance in patients with heart failure. (Int Heart J 2005; 46: 123-131)

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“…All volumes were corrected with respect to the body surface areas and left atrial functional parameters were calculated using the below mentioned formulas; 1 -LA passive emptying volume (LAPE V) = LAVmax -LAVp, 2-LA passive emptying fraction (LAPEF) = LAPEV/LAVmax, 3-conduit volume (CV) = Left ventricular stroke volume (LAVp-LAVmin), 4-LA active emptying volume (LAAEV) = LAVp-LAVmin, 5-LA active emptying fraction (LAAEF) = LAAEV/ LAVp, 6-LA total emptying volume (LATEV) = (LAVmax -LAVmin), 7-LA total emptying fraction (LATEF) = LATEV/LAmax (Toutouzas et al 1996). All measurements were repeated during three consecutive beats and their average was taken.…”

Section: Left Atrial Mechanical Functionmentioning

confidence: 99%

Early Effects of Percutaneous Mitral Valvuloplasty on Left Atrial Mechanical Functions

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Türkmen

Karakaya

et al. 2006

Tohoku J. Exp. Med.

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It has been suggested that successful percutaneous balloon mitral valvuloplasty (PMV) decreases the intensity of spontaneous left atrial contrast, reduces the size of the left atrium, and improves left atrial function in patient with mitral stenosis. However, left atrial mechanical functions immediately after PMV have not been extensively evaluated yet. The aim of this study was to evaluate the effects of PMV on left atrial mechanical functions. Twenty patients with critical mitral stenosis who have normal sinus rhythm (male/female: 4 to 16; mean age: 33 ± 8 years) were included in the study. Left atrial mechanical functions were evaluated before and after PMV, including left atrial passive emptying volume, LA passive emptying fraction, conduit volume, left ventricular stroke volume, LA active emptying volume, LA active emptying fraction, LA total emptying volume and LA total emptying fraction. PMV resulted in a significant increase in the mitral valve area ( p < 0.001) and a substantial reduction in the mean transmitral pressure gradient ( p < 0.001) as well as LA diameter ( p < 0.002). LA maximal volume, minimal volume and atrial presystolic volumes were significantly decreased after PMV ( p: 0.001; p: 0.002; p: 0.001, respectively). The conduit volume was increased and LA total emptying volume was decreased after PMV ( p: 0.014; p: 0.035). The other left atrial volumes were not altered after PMV. The early increase in conduit volume and the decrease in left atrial presystolic volume indicate that PMV has favorable effects on atrial reservoir and conduit functions. PMV therefore improves atrial mechanic functions. left atrial mechanical functions; percutaneous mitral valvuloplasty; mitral stenosis

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Echocardiographic features of left atrium in elite male athletes

Cited by 52 publications

References 17 publications

Enhanced Left Atrial Reservoir, Increased Conduit, and Weakened Booster Pump Function in Hypertensive Patients with Paroxysmal Atrial Fibrillation

Enhanced Left Atrial Reservoir, Increased Conduit, and Weakened Booster Pump Function in Hypertensive Patients with Paroxysmal Atrial Fibrillation

<b>Value of Left Atrial Function in Predicting Exercise Capacity in Heart Failure With Moderate to Severe Left Ventricular Systolic Dysfunction</b>

Early Effects of Percutaneous Mitral Valvuloplasty on Left Atrial Mechanical Functions

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