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Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs

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Published on: December 22, 2023

Delayed lung liquid absorption after cesarean section at term.

Laura Martelius¹, Cecilia Janér, Liina Süvari

¹Department of Radiology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland. laura.martelius@hus.fi

|July 27, 2013

Summary

Lung ultrasound effectively assesses lung liquid in newborns. Infants born via cesarean section show higher lung liquid levels shortly after birth compared to vaginally born infants.

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Area of Science:

Neonatal Medicine
Pediatric Pulmonology
Medical Imaging

Background:

Delayed postnatal lung liquid removal can cause respiratory distress, particularly in cesarean-born infants.
Lung ultrasound B-lines correlate with lung liquid content.

Purpose of the Study:

To evaluate lung ultrasound for assessing postnatal lung liquid in healthy term infants.
To compare lung liquid in vaginally born versus cesarean-born infants.

Main Methods:

Lung ultrasound performed at 1, 3, and 24 hours post-birth.
22 vaginally born and 20 cesarean-born infants included.
B-line abundance scored by blinded observers on a five-step scale.

Main Results:

Lung liquid absorption, indicated by decreasing B-lines, occurred within 24 hours in both groups.
Cesarean-born infants had significantly more lung liquid at 3 hours post-birth compared to vaginally born infants.

Conclusions:

Noninvasive bedside ultrasound can estimate lung liquid.
This method shows promise for early identification of infants at risk for pulmonary maladaptation.