Three-dimensional ultrasound fetal lung volumes and infant respiratory outcome: a prospective observational study

BJOG : an International Journal of Obstetrics and Gynaecology
M PrendergastAnne Greenough

Abstract

To determine if fetal lung volumes (FLVs), determined by three-dimensional rotational ultrasound and virtual organ computer-aided analysis software (vocal), correlated with neonatal respiratory outcomes in surviving infants who had a high risk [fetuses with congenital diaphragmatic hernia (CDH)], lower risk [fetuses with anterior wall defects (AWDs)] and no risk (controls) of abnormal antenatal lung growth. Prospective observational study. Tertiary fetal medicine and neonatal intensive care units. Sixty fetuses (25 with CDH, 25 with AWDs and ten controls). FLVs were measured and expressed as the percentage of the observed compared with the expected for gestational age. Neonatal respiratory outcome was determined by the duration of supplemental oxygen, mechanical ventilation and dependencies, and assessment of lung volume using a gas dilution technique to measure functional residual capacity (FRC). The infants with CDH had lower FLV results than both the infants with AWDs (P=0.05) and the controls (P<0.05). The infants with CDH had longer durations of mechanical ventilation (P<0.001) and supplementary oxygen (P<0.001) dependence, compared with infants with AWDs. The infants with CDH had a lower median FRC than both the infants w...Continue Reading

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