Intraoperative TEE. Evaluation in a patient with pulmonary atresia and intact ventricular septum who has moderate hypoplasia of the tricuspid valve. TEE typically gives excellent views of the annulus size and is a good modality for evaluating tricuspid valve function. This example shows that there is some antegrade tricuspid valve flow, though with a narrowed inflow jet, and no significant tricuspid regurgitation.

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