Echocardiographic assessment of left atrial ejection force and kinetic energy in chronic heart failure

Triposkiadis, Filippos; Harbas, Christos; Sitafidis, George; Skoularigis, John; Demopoulos, Vassilios; Kelepeshis, Glafkos

doi:10.1007/s10554-007-9219-7

Cited by 34 publications

(31 citation statements)

References 32 publications

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“…LA contractile function was estimated by the LA active emptying fraction (%), computed as [(LA pre-A volume - minimum volume) / pre-A volume] × 100%. LA ejection force (kdynes.cm/m 2 ) was calculated according to the modified Manning method as (0.5 × ρ × LA active emptying volume index × A 2 ) / VTI A , where ρ is blood density of 1.06 g/cm 3 , A is peak late diastolic transmitral flow velocity (cm/sec), and VTI A is late diastolic transmitral flow velocity time integral (cm) 12). LA kinetic energy (kdynes/m 2 ) was defined as 0.5 × ρ × LA active emptying volume index × A 2 .…”

Section: Methodsmentioning

confidence: 99%

Left Atrial Mechanical Function and Stiffness in Patients with Paroxysmal Atrial Fibrillation

Yoon

Kim

et al. 2012

J Cardiovasc Ultrasound

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BackgroundAbnormalities in the left atrial (LA) structure and function may develop in patients with paroxysmal atrial fibrillation (AF). We sought to determine the contribution of LA mechanical function, including LA stiffness, to AF by comparing patients with paroxysmal AF with normal control subjects, and to evaluate whether LA mechanical function and stiffness are related with the structural changes of LA.MethodsSixty-four paroxysmal AF patients (57 ± 13 years, 59% male) were studied, using a speckle tracking echocardiography, and were compared with 34 age-, gender-, and left ventricular (LV) mass-matched controls (53 ± 14 years, 61% male). LA volume indices, expansion index for reservoir function, active emptying fraction for contractile function, mitral annular velocities, and global longitudinal LA strain were measured. The ratio of E/e' to LA strain was used as an index of LA stiffness.ResultsPatients with paroxysmal AF had similar LV volume indices, ejection fraction, and diastolic function, when compared with that of the normal controls. However, paroxysmal AF patients showed increased LA volume indices and decreased LA reservoir function, but similar contractile function. LA stiffness was increased in patients with paroxysmal AF than in the control subjects (0.40 ± 0.25 vs. 0.29 ± 0.10, p = 0.002), and was related with LA volume indices and reservoir function.ConclusionPatients with paroxysmal AF have decreased LA reservoir function and increased stiffness, in comparison with that of the control subjects. LA stiffness was significantly related with LA volume indices and reservoir function. LA stiffness can be used for the assessment of LA function in patients with paroxysmal AF.

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Section: Methodsmentioning

confidence: 99%

Left Atrial Mechanical Function and Stiffness in Patients with Paroxysmal Atrial Fibrillation

Yoon

Kim

et al. 2012

J Cardiovasc Ultrasound

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“…Two-dimensional and Doppler echocardiography allows assessment of LA systolic force by Manning' s equation and kinetic energy. 15 Tissue Doppler measures mitral annulus velocity at different phases. The velocity measured at end-diastole (A′ wave) shows association with invasive parameter of LA systolic function and can estimate atrial contractility.…”

Section: -13mentioning

confidence: 99%

Left Atrium in Heart Failure With Preserved Ejection Fraction

Rossi

Gheorghiade

Triposkiadis

et al. 2014

Circ: Heart Failure

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124

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LA is crucial for the volume receptor reflex through its mechanoreceptors located in the venous-atrial junctions. 6 An optimal volume control is essential for cardiovascular function and might be vital in conditions like hemorrhages and HF. This system is regulated on a moment-by-moment basis and works in parallel with other endocrine systems, such as natriuretic peptide, and angiotensin-aldosterone signals for more long-term regulation. The atrial mechanoreceptors are highly efficient, and fluctuation in venous volume of <1% can be signaled to the brain through autonomic nerves. 7 The LA (Circ Heart Fail.

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“…Patients with left ventricular dysfunction or congestive heart failure (CHF) were thought to have LA dysfunction [1]. Preserved LA contraction contributes to maintain left ventricular end-diastolic pressure and cardiac output [2]. With progression of left ventricular dysfunction, the LA contribution to left ventricular filling gradually decreases [1].…”

Section: Introductionmentioning

confidence: 99%

Decreased Mechanical Function of Left Atrium Assessed by Speckle Tracking and Tissue Doppler Echocardiography in Patients with Congestive Heart Failure

Tsai

Liu

Huang

et al. 2012

Journal of Medical Ultrasound

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KEY WORDScongestive heart failure, left atrium, speckle tracking echocardiography, strain, strain rate Mechanical dysfunction of left atrium (LA) could be documented by tissue Doppler and speckle tracking echocardiography in patients with congestive heart failure (CHF). This study included 28 CHF, 46 untreated hypertension (HT), and 52 normal (NM) individuals with normal sinus rhythm. LA volumes and emptying fraction (LAEF) were measured by biplane area-length method. Peak LA strain (LAS) and strain rate (LASR) measured from speckle tracking echocardiography were identified as the peak negative deflection after P-wave. Tissue velocity (LATV) and tissue Doppler-derived strain (LATS) of LA were also used as indices of LA mechanical function. LAEF, LAS, LASR, LATV, and LATS were significantly lower in CHF than in HT and NM. After multivariate analysis controlling for age and sex, LAS, LASR, and LATV were still significantly lower in CHF. LASR was significantly correlated with LAEF. In conclusion, LA mechanical function was decreased in patients with CHF. ª

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Echocardiographic assessment of left atrial ejection force and kinetic energy in chronic heart failure

Abstract: Despite the decreased LA systolic shortening, overall LA systolic performance is augmented in chronic HF due to LA dilation.

Cited by 34 publications

References 32 publications

Left Atrial Mechanical Function and Stiffness in Patients with Paroxysmal Atrial Fibrillation

Left Atrial Mechanical Function and Stiffness in Patients with Paroxysmal Atrial Fibrillation

Left Atrium in Heart Failure With Preserved Ejection Fraction

Decreased Mechanical Function of Left Atrium Assessed by Speckle Tracking and Tissue Doppler Echocardiography in Patients with Congestive Heart Failure

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