Re‐evaluation of lung to thorax transverse area ratio immediately before birth in predicting postnatal short‐term outcomes of fetuses with isolated left‐sided congenital diaphragmatic hernia: A single center analysis

ABSTRACT We aimed to investigate whether the lung‐to‐thorax transverse area ratio (LTR) immediately before birth is of diagnostic value for the prediction of postnatal short‐term outcomes in cases of isolated left‐sided congenital diaphragmatic hernia (CDH). We retrospectively reviewed the cases of fetal isolated left‐sided CDH managed at our institution between April 2008 and July 2016. We divided the patients into two groups based on LTR immediately before birth, using a cut‐off value of 0.08. We compared the proportions of subjects within the two groups who survived until discharge using Fisher's exact test. Further, using Spearman's rank correlation, we assessed whether LTR was correlated with length of stay, duration of mechanical ventilation, and supplemental oxygen. Twenty‐nine subjects were included (five with LTR