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.


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

Mark Awori

Read the Original

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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