Left atrial ejection fraction is an indicator of left ventricular diastolic function

Area of Science:

• Cardiology
• Echocardiography
• Diastolic Function

Background:

• Left atrial ejection fraction (LAEF) has shown promise in identifying left ventricle diastolic dysfunction (LVDD).
• Previous studies excluded indeterminate cases, limiting LAEF's diagnostic scope.
• Accurate assessment of diastolic function is crucial for patient management.

Purpose of the Study:

• To evaluate the efficacy of LAEF in distinguishing between normal, indeterminate, and LVDD patients.
• To assess LAEF's diagnostic accuracy across different categories of diastolic function.
• To determine if LAEF can serve as a standalone or adjunctive diagnostic marker.

Main Methods:

• Retrospective analysis of 125 patients undergoing transthoracic echocardiography.
• Measurement of validated diastolic parameters and categorization based on ASE/EACVI criteria.
• Statistical analysis including ANOVA, logistic regression, and ROC curves to assess LAEF's discriminative power.

Main Results:

• Mean LAEF differed significantly across normal (56.3%), indeterminate (50.2%), and LVDD (44%) groups (p < 0.001).
• LAEF demonstrated excellent accuracy in distinguishing LVDD from non-LVDD (AUC 0.91) and good accuracy for indeterminate vs. LVDD (AUC 0.72).
• LAEF showed significant odds ratios for differentiating LVDD and indeterminate cases.

Conclusions:

• LAEF accurately differentiates between normal, indeterminate, and LVDD patient groups.
• LAEF exhibits strong discriminative power, supporting its role in diastolic function assessment.
• LAEF can be considered a valuable additional parameter for evaluating diastolic function.