Using Z-scores allows surgeons to intervene in small children before the aorta reaches a diameter that is disproportionately large for their body size, preventing catastrophic dissection.
There is no single universal formula for calculating the aortic root Z-score, as different regression models have been proposed over the decades. The accuracy of a Z-score depends heavily on the reference population from which the normative data was derived.
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Using Z-scores allows surgeons to intervene in small children before the aorta reaches a diameter that is disproportionately large for their body size, preventing catastrophic dissection.
There is no single universal formula for calculating the aortic root Z-score, as different regression models have been proposed over the decades. The accuracy of a Z-score depends heavily on the reference population from which the normative data was derived.