Left atrial strain measured by two-dimensional speckle tracking represents a new tool to evaluate left atrial...

Area of Science:

• Cardiology
• Echocardiography
• Cardiac Physiology

Background:

• Left atrial (LA) strain (epsilon) and strain rate (SR) analysis via 2D speckle tracking offers a new approach to evaluate LA function.
• The study aimed to validate LA epsilon and SR by comparing them with standard Doppler echocardiographic parameters in healthy subjects.

Purpose of the Study:

• To assess the correlation between LA strain and strain rate and other Doppler echocardiographic parameters of LA and left ventricular function.
• To determine the potential value of LA strain and strain rate as diagnostic tools for LA function.

Main Methods:

• Sixty-four healthy individuals were studied.
• LA epsilon and SR were calculated using speckle tracking, identifying peak negative/positive epsilon and total epsilon, representing contractile, conduit, and reservoir functions.
• Specific SR parameters (late negative, positive, early negative) were identified corresponding to different phases of the cardiac cycle.

Main Results:

• Global LA epsilon (positive peak, negative peak, total) and SR (positive peak, early negative, late negative) values were quantified.
• LA epsilon and SR parameters demonstrated significant correlations with Doppler echocardiographic indexes of LA function and cardiac cycle phases.
• LA epsilon and SR also showed significant correlations with age and body mass index in healthy subjects.

Conclusions:

• LA strain analysis is a promising new tool for evaluating left atrial function.
• Further research is needed to establish the clinical utility of LA strain analysis in various disease states.