Correlation between Left Atrial Echocardiographic Deformation Parameters and Invasive Left Ventricular End-Diastolic...

Area of Science:

• Cardiology
• Echocardiography
• Diastology

Background:

• Noninvasive estimation of elevated left ventricular end-diastolic pressure (LVEDP) is crucial for diagnosing left ventricular diastolic dysfunction (LVDD).
• Current echocardiographic parameters for LVEDP estimation have limitations.
• Left atrial (LA) strain shows promise as a noninvasive LVEDP assessment tool.

Purpose of the Study:

• To investigate the correlation between LA deformation parameters and invasively measured LVEDP.
• To evaluate the utility of speckle-tracking echocardiography (STE) for assessing LA strain in relation to LVEDP.

Main Methods:

• Prospective study of 82 patients in sinus rhythm undergoing left heart catheterization.
• Comprehensive transthoracic echocardiography and STE for peak atrial longitudinal strain (PALS) assessment within 12 hours of catheterization.

Main Results:

• PALS demonstrated a moderate inverse correlation with LVEDP (r=-0.590, P=0.001).
• PALS, age, and E/E' ratio were independent predictors of elevated LVEDP (≥12 mm Hg).
• PALS showed the highest diagnostic accuracy (AUC=0.849) for predicting elevated LVEDP, with a cutoff of 35% providing 81.1% sensitivity and 81.4% specificity.

Conclusions:

• Peak atrial longitudinal strain (PALS) is a reliable noninvasive parameter for predicting elevated LVEDP.
• The use of PALS may improve the early identification of left ventricular diastolic dysfunction (LVDD).