Keywords: Cardiovascular, Diagnosis/Prediction, Fontan, Congenital heart disease, sarcopenia
Motivation: Reduced muscle mass is linked to adverse outcomes in patients with Fontan physiology. Psoas muscle volume measurement may enable more precise muscle mass assessment.
Goal(s): To identify whether psoas muscle area or volume is a more accurate predictor of adverse outcomes in Fontan patients.
Approach: Psoas muscle volume and area indexes, measured with abdominal MRI using the UTE sequence, were compared using logistic regression between patients with Fontan-associated complications and those with stable clinical progress.
Results: In patients with Fontan circulation, psoas muscle volume measurements are strongly correlated with area measurements and might show a stronger association with adverse outcomes than area.
Impact: The psoas muscle volume is a reproducible and easily obtained measurement using abdominal MRI, showing a strong correlation with the psoas muscle area. The psoas muscle volume could better correlate with these outcomes than the psoas muscle area.
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