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Neonatal Med > Volume 20(1); 2013 > Article
Neonatal Medicine 2013;20(1):106-112.
DOI: https://doi.org/10.5385/nm.2013.20.1.106    Published online March 8, 2013.
Partial Seizures Manifesting as Apnea Only in Preterm Infant.
Ja Kyung Jun, Cheong Jun Moon, Soon Ju Kim, Young Ah Youn, Ju Young Lee, Hyun Seung Lee, Jung Hyun Lee, In Kyung Sung, So Young Kim
Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea. sykimped@catholic.ac.kr
Abstract
PURPOSE
Extremely-low-birth-weight infants (ELBWIs), especially those < or =24 gestational weeks (GW), presented extremes in IWL and changes of water balance. The purpose of the present study was to retrospectively investigate fluid and electrolyte balance in infants of < or =24-GW during the first postnatal week under high humidification.
METHODS
Medical records of extremely-low-birth-weight infants (ELBWIs) who were born and admitted to the Neonatal Intensive Care Unit at Samsung Medical Center during March 2004-September 2010 were reviewed. Fluid intake, urine output, insensible water loss (IWL), and electrolyte balance of 22-GW (n=14), 23-GW (n=40), and 24-GW (n=67) infants nursed in high humidity (95%) were compared with > or =26-GW (n=65) infants nursed in 60% humidity.
RESULTS
Survival rate until discharge was 33%, 82%, 75%, and 89.3% in 22-GW, 23-GW, 24-GW, and > or =26-GW infants, respectively. Fluid intake and IWL was higher in 22-GW and 23-WG, but not different in 24-GW, than in > or =26-GW infants. At postnatal days (P) 3-5, the urine output was significantly lower in > or =26-GW infants than in the other age groups. Serum sodium level was significantly higher in 22-, 23-, and 24-GW (P1-2) than in > or =26-GW infants. Hypernatremia (>150 mEq/dl sodium) was more frequent in 22-GW (71%), 23-GW (41%), and 24-GW (21%) than in > or =26-GW infants (14%).
CONCLUSION
High-humidity environments significantly decreased fluid intake and improved electrolyte imbalance in 24-GW, but not 22- and 23-GW, infants. Increased IWL in the latter might be related to more immature skin, and implicates the need for additional nurturing conditions.
Key Words: Electrolytes, Extremely-low-birth-weight infant, Humidity, Insensible water loss


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