What is it about?

Pulmonary annulus z-score is often used to decide whether a transannular patch should be inserted. Several z-score cut offs have been quoted in the literature and this is confusing. We show that the the multiple z score cut offs quoted in the literature may have resulted from the use of z scores derived from different populations. This may have implications for the use of cut offs representing small pulmonary valve annuli.

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Why is it important?

If you use a pulmonary valve z score cut off that is too small, you will not adequately relieve right ventricular outflow obstruction.

Perspectives

This paper is important because is contributes to the case for using well derived z scores in Congenital heart surgery.

Mark Awori

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This page is a summary of: Optimal Use of Z-Scores to Preserve the Pulmonary Valve Annulus During Repair of Tetralogy of Fallot, World Journal for Pediatric and Congenital Heart Surgery, April 2018, SAGE Publications, DOI: 10.1177/2150135118757991.
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