Echocardiography underestimated aortic valve area compared with MRI (mean difference -0.23 cm2; 95% CI -1.01 to 0.59), which alongside revised thresholds reduced diagnostic discordance by 48%.
Observational (n=166)
Does echocardiography underestimate stroke volume and aortic valve area compared to MRI in patients with aortic stenosis?
Echocardiography underestimates LVOT area and stroke volume compared to MRI, which contributes significantly to the discordance seen in small-area low-gradient aortic stenosis and highlights inconsistencies in current guideline thresholds.
Effect estimate: Mean difference -0.23 cm2 (95% CI -1.01 to 0.59)
BACKGROUND: Discordance between small aortic valve area (AVA; 40% of patients with discordant small-area low-gradient AS.
Chin et al. (Fri,) conducted a observational in Aortic stenosis (n=166). Echocardiography vs. Cardiovascular magnetic resonance imaging (MRI) was evaluated on Aortic valve area (AVA) estimation (Mean difference -0.23 cm2, 95% CI -1.01 to 0.59). Echocardiography underestimated aortic valve area compared with MRI (mean difference -0.23 cm2; 95% CI -1.01 to 0.59), which alongside revised thresholds reduced diagnostic discordance by 48%.