Key result
Beta-thalassemia major patients had significantly reduced global longitudinal peak systolic strain compared to healthy controls, with a cutoff of ≤-19 demonstrating 90% sensitivity and 100% specificity for detecting subclinical cardiac iron overload.
Why the study?
Routine MRI T2* for myocardial iron overload in beta-thalassemia is limited by cost and availability, prompting evaluation of two-dimensional speckle-tracking echocardiography for early myocardial disease detection.
Does 2D speckle-tracking echocardiography detect subclinical cardiac iron overload in beta-thalassemia major patients?
Population
30 beta-thalassemia major patients with no clinical heart disease and 30 healthy age- and sex-matched controls
Comparison
Beta-thalassemia major patients vs healthy controls
Design
Case-control study
Authors
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STE may detect early LV dysfunction in thalassemia; leaves open validation against T2* MRI before routine use.
Cross-Sectional (n=60)
Blinded assessors
No
Does 2D speckle-tracking echocardiography detect subclinical cardiac iron overload in beta-thalassemia major patients?
Absolute Event Rate: -19.2% vs -22%
p-value: p=0.001
2D speckle-tracking echocardiography is a sensitive and specific alternative to MRI T2* for detecting early subclinical myocardial iron overload in beta-thalassemia major patients.
Tantawy et al. (2022) conducted a cross-sectional in Beta-thalassemia major (n=60). Beta-thalassemia major vs. Healthy controls was evaluated on Global longitudinal peak systolic strain average (GLPS AVG) (p=0.001). Beta-thalassemia major patients had significantly reduced global longitudinal peak systolic strain compared to healthy controls, with a cutoff of ≤-19 demonstrating 90% sensitivity and 100% specificity for detecting subclinical cardiac iron overload.
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