Korean J Pediatr.
2018 Mar;61(3):78-83. 10.3345/kjp.2018.61.3.78.
Augmentation of respiratory muscle activities in preterm infants with feeding desaturation
- Affiliations
-
- 1Department of Rehabilitation Medicine, Daegu Catholic University Medical Center, Catholic University of Daegu School of Medicine, Daegu, Korea.
- 2Department of Pediatrics, Daegu Catholic University Medical Center, Catholic University of Daegu School of Medicine, Daegu, Korea.
- 3Department of Pediatrics, Kyungpook National University Medical Center, Kyungpook National University School of Medicine, Daegu, Korea. pshmom00@gmail.com
- KMID: 2407557
- DOI: http://doi.org/10.3345/kjp.2018.61.3.78
Abstract
- PURPOSE
Frequent desaturation due to immature incoordination of suck-swallow-breathing in preterm infants can influence multiple organs such as the heart, lungs, and brain, which can then affect growth and development. Most notably in preterm infants, feeding desaturation may even affect pulmonary function during gavage feeding. Because respiratory muscle activities may reflect the work required during respiration, we evaluated the differences in these activities between full-term and preterm infants with feeding desaturation, and investigated the correlations with clinical variables.
METHODS
Nineteen preterm infants with feeding desaturation (group 1) and 19 age-matched full-term infants (group 2) were evaluated. Oromotor function was evaluated using video recording. The root-mean-squre (RMS) envelope of the electromyography signal was calculated to quantify the activities of muscles involved in respiration. The differences in RMS between both groups and the correlation with clinical variables including gestational age (GA), birth weight (BW), and Apgar scores (AS) at 1 and 5 minutes after birth were evaluated.
RESULTS
The RMS values of the diaphragm (RMS-D) and rectus abdominis (RMS-R) were significantly greater in group 1 compared to group 2, and the 1- and 5-min AS were significantly lower in group 1 compared to group 2. RMS-D and RMS-R were inversely correlated with GA, BW, 1- and 5-min AS in all infants.
CONCLUSION
This study showed that respiratory muscle activities were augmented during feeding in preterm infants compared to full-term infants. Additionally, respiratory muscle activities were inversely correlated with all clinical variables.
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