JASE VOLUME 35, ISSUE 3, P278-286, MARCH 01, 2022
Highlights
BAV aortic root is asymmetric (not circular), resulting in unequal root diameters.
Orientation in the thorax of the largest root diameter depends on BAV phenotype.
When BAV is present, the largest root diameter is perpendicular to the opening.
When N-R BAV is present, on TTE, the aortic valve opening is vertical.
In N-R BAV, the transthoracic PLAX view underestimates maximal root diameter.
Conclusions
Aortic root morphology in patients with BAV can be predicted by BAV phenotype: the largest root diameter is roughly perpendicular to the orientation of the valve opening. Therefore, echocardiographic measurements according to present recommendations (parasternal long-axis view) underestimate maximal diameter in patients with N-R BAV.
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