A method for early evaluation of a recently introduced technology by deriving a comparative group from existing clinical data: a case study in external support of the Marfan aortic root.

While the association between dissection and larger aortic size is highly significant, dissection can occur in Marfan syndrome in a relatively small aorta. 31 32 While this intimately applied external support might not completely obviate that risk, it seems a reasonable expectation that it will be substantially reduced.

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