Key result
Abnormal cardiac iron load in β-thalassemia was associated with significantly lower global longitudinal strain (P<.0001), with a GLS cutoff of -18.5% predicting T2* <20 ms (AUC 0.742).
Why the study?
Does left ventricular global longitudinal strain correlate with cardiac magnetic resonance T2* to predict myocardial iron overload in individuals with β-thalassemia?
Population
130 individuals with β-thalassemia
Comparison
Left ventricular global longitudinal strain… vs Cardiac magnetic resonance T2* imaging
Design
Cross-sectional
Authors
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GLS may aid noninvasive detection of iron overload in β-thalassemia; hypothesis-generating and requires prospective validation.
Cross-Sectional (n=130)
Does left ventricular global longitudinal strain correlate with cardiac magnetic resonance T2* to predict myocardial iron overload in individuals with β-thalassemia?
Effect estimate: AUC 0.742
p-value: p=<.0001
Global longitudinal strain via echocardiography is a useful and accessible tool to predict myocardial iron overload in patients with β-thalassemia, correlating significantly with the gold-standard cardiac MRI T2*.
Parsaee et al. (2018) conducted a cross-sectional in β-thalassemia (n=130). Abnormal cardiac iron load vs. Normal cardiac iron load was evaluated on Left ventricular global longitudinal strain (GLS) (AUC 0.742, p=<.0001). Abnormal cardiac iron load in β-thalassemia was associated with significantly lower global longitudinal strain (P<.0001), with a GLS cutoff of -18.5% predicting T2* <20 ms (AUC 0.742).
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