Key result
Two-dimensional transthoracic echocardiography significantly underestimated left atrial volume compared to cardiac CT (67.6 vs 106 mL for the biplane area-length method; r=0.712).
Why the study?
How accurate are two-dimensional echocardiographic and CT methods for measuring left atrial volume compared to a CT volumetric reference standard?
Population
177 consecutive patients who underwent both a two-dimensional transthoracic echocardiography and…
Comparison
Left atrial volume measurement using… vs LAVol measured by CT using a volumetric method
Design
Cross-sectional
Authors
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Clinicians should interpret 2D echocardiographic left atrial volumes cautiously; Level 4 data leaves open validation against CT for outcomes.
Observational (n=177)
How accurate are two-dimensional echocardiographic and CT methods for measuring left atrial volume compared to a CT volumetric reference standard?
Effect estimate: r = 0.712
Absolute Event Rate: 67.6% vs 106%
While 2D echocardiography provides a reasonable assessment of left atrial volume, it significantly underestimates true volume compared to CT, with the biplane area-length method being the most accurate 2D estimate.
Al‐Mohaissen et al. (2013) reported an observational. Two-dimensional transthoracic echocardiography (2DTTE) vs. Cardiac computed tomography (CT) was evaluated on Left atrial volume (LAVol) (r = 0.712). Two-dimensional transthoracic echocardiography significantly underestimated left atrial volume compared to cardiac CT (67.6 vs 106 mL for the biplane area-length method; r=0.712).
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