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Journal of the Korean Society of Neonatology 2006;13(1):83-89.
Published online May 1, 2006.
The Study of the Influenced Factors of Hyperkalemia in Low Birth Weight Infants.
Dong Soo Kim, Yeo Soon Jang, Yong Joo Kim, Chang Ryul Kim, Sung Hee Oh, Su Ji Moon
Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea. sjmoon@hanyang.ac.kr
저출생 체중아에서 고칼륨혈증과 이에 영향을 미치는 요인에 대한 연구
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The aim of this study is to evaluate the incidence of hyperkalemia and the contributing factors of nonoliguric hyperkalemia in low birth weight infants within 48 hours after birth.
The incidence of nonoliguric hyperkalemia and difference of clinical features between hyperkalemia (>6.7 mEq/L) and normokalemia (< or =6.7 mEq/L) groups were determined by reviewing medical records of 196 low birth weight infants who were born in Hanyang university hospital between Oct. 2001. and Jul. 2004. We analized the serum level of sodium, potassium, fluid intake, urine output, pH of blood gas and others.
Among 196 infants, 17 infants was hyperkalemia developed in 48 hours after birth. In that cases, 10 infants were showed EKG abnormalities, such as ventricular tachycardia. In all cases, birth weight, gestational age, Apgar score, usage of surfactant, urine output, BUN and creatinine were significant. In A group gestational age, urine output, BUN, creatinin were significant, in B group BUN, creatinine were significant, in C group BUN were significant between hyperkalemia and normokalemia. Six infants with hyperkalemia died as a result of hyperkalemia induced cardiac arrhythmia.
Hyperkalemia frequently occurred extremely premature infants. But hyperkalemia also be developed in low birth weight infants who were not suffered from asphyxia or tissue damage. Serum potassium level should be monitored to avoid life threatening cardiac arrhythmia in low birth weight infant.
Key Words: Hyperkalemia; Low birth weight infants


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