Table 2_Echocardiographic assessment of left atrial structure and function in severe aorti

A 2026 study by Yao Zhang compares left atrial structure and function in patients with severe aortic stenosis, grouped by preserved (≥50%) versus reduced (<50%) left ventricular ejection fraction. The dataset includes measurements from transthoracic and speckle-tracking echocardiography, with analyses using restricted cubic splines. It is a small, 24.7 KB document published under a CC-BY-4.0 license on figshare.

Use Cases

• Comparing left atrial volumes (LAVmax, LAVmin, LAVpre, LAVI) between patient groups with different ejection fractions.
• Analyzing the relationship between left ventricular ejection fraction and left atrial functional parameters like emptying fractions (LATEF, LAVaEF, LAVpEF) and strain.
• Investigating left atrioventricular coupling index (LACI) and left atrial stiffness index (LASI) as potential markers of cardiac impairment.
• Identifying inflection points (approximately 46% and 59% LVEF) for trend changes in atrial structure and function.

Strengths

• Includes specific, named echocardiographic parameters for left atrial structure and function.
• Analysis identifies LVEF inflection points (approximately 46% and 59%) for structural and functional changes.
• Uses advanced analysis methods like two-dimensional speckle-tracking echocardiography and restricted cubic splines.

Limitations

• The dataset is very small at 24.7 KB, suggesting limited scope or summary data.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for statistical modeling.

Provenance

Source

figshare, author Yao Zhang.

Collection Method

Clinical study using transthoracic and two-dimensional speckle-tracking echocardiography on patient cohorts.

Freshness

Last updated 2026-05-21 05:42:25; freshness should be verified.