The quantitative lung index: the left lung

We have previously described a gestational age-independent sonographic parameter to assess fetal lung growth in the right lung (right quantitative lung index, or QLI-R). The purpose of this study was to develop a similar sonographic parameter to assess the growth of the left lung in the fetus, indep...

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Bibliographic Details
Published in:The journal of maternal-fetal & neonatal medicine 2022-11, Vol.35 (21), p.4142-4148
Main Authors: Kontopoulos, Eftichia V., Quintero, Luis F., Chmait, Ramen, Quintero, Rubén A.
Format: Article
Language:English
Subjects:
congenital diaphragmatic hernia
lung-to-head ratio
Quantitative lung index
tracheal occlusion
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Summary:We have previously described a gestational age-independent sonographic parameter to assess fetal lung growth in the right lung (right quantitative lung index, or QLI-R). The purpose of this study was to develop a similar sonographic parameter to assess the growth of the left lung in the fetus, independent of gestational age, or QLI-L. A new index, the QLI-L was derived using published formulas for the head circumference (HC) and the area of the base of the left lung (LA), with the corresponding percentiles. Left lung growth can be expressed using the following formula: The 50th percentile of the QLI-L remained approximately constant at 1.0 for the GA between 16-32 weeks. A small left lung (
ISSN:1476-7058
1476-4954
DOI:10.1080/14767058.2020.1847076