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Case Report
A Case of Congenital Laryngeal Atresia with Single Umbilical Artery Who Required a Tracheotomy
Ho Sung Wi, Hey Sung Baek, Jae Won Oh, Myung-Kul Yum, Yong Joo Kim, Soo Jee Moon, Kyung Tae, Chang-Ryul Kim
Clin Exp Pediatr. 2005;48(5):557-560.   Published online May 15, 2005
Congenital laryngeal atresia is a rare cause of airway obstruction that is almost always lethal within a few minutes after birth. Therefore congenital laryngeal atresia should be diagnosed in the prenatal period. If not, it should be considered in newborn infant with life-threatening symptoms at birth such as cyanosis and dyspnea that need emergent procedures like a tracheotomy. We report...
Original Article
A Clinical Study of Neurologic Abnormalities Associated with Rotavirus Gastroenteritis
Yoon-Duk Kang, Myung-Kul Yum, Jae-Won Oh, Chang-Ryul Kim, In-Joon Seol, Jung-Oak Kang
Clin Exp Pediatr. 2004;47(7):751-755.   Published online July 15, 2004
Purpose : Reports of neurologic abnormalities associated with acute diarrhea are increasing recently. It was reported that the incidence of the neurologic abnormalities related to gastroenteritis was higher in rotavirus gastroenteritis than in non-rotavirus gastroenteritis. We investigated the incidence, the manifestations and the prognosis of the neurologic abnormalities associated with rotavirus diarrhea and non-rotavirus diarrhea in Korean children. Methods : Six...
Decreased Nonlinear Coupling of Peripheral Blood Volume to Heart Rate in Preterm Infants
Eun-Young Park, Chang-Ryul Kim, Myung-Kul Yum
Clin Exp Pediatr. 2004;47(4):386-391.   Published online April 15, 2004
Purpose : We investigated the autonomic nervous and complex modulation of heart rate and peripheral blood volume, and linear and nonlinear coupling between heart rate and peripheral blood volume in full-term and preterm infants. Methods : In twenty healthy preterm infants and twenty full-term infants at postconceptional age of 30-37 and 38-41 weeks each, we recorded electrocardiogram and photoplethysmogram simultaneously during...
Abnormal Fractal Correlation of Heart Rate in Children with Neurocardiogenic Syncope
Keoung-Young Kim, Eun-Young Joo, Myung-Kul Yum, Je-Wen Oh, Chang-Ryul Kim, Nam-Su Kim, Cheol-Beom Lee, Chung-Ill Noh
Clin Exp Pediatr. 2002;45(9):1114-1119.   Published online September 15, 2002
Purpose : The purposes of this study were to determine short- and long-term fractal correlation behavior of heart rates during daily activity in patients with neurocardiogenic syncope. Methods : Twenty five patients with histories of neurocardiogenic syncope episodes were included. Their analogue 24h ambulatory Holter electrocardiograms were analyzed. The tape was digitized and the digitized electrocardiograms were partioned into...
Effect of Parenteral Nutrition Guideline Changes on Neonatal Sepsis in Premature Infants
Chang-Ryul Kim, Jae-Won Oh, Myung-Kul Yum, Soo-Jee Moon
Clin Exp Pediatr. 2001;44(6):620-626.   Published online June 15, 2001
Purpose : We hypothesized that decreased parenteral nutrition would lower the incidence of neonatal sepsis in premature infants. Methods : The study involves 223 premature infants who were admitted to the neonatal intensive care unit of Hanyang University Kuri Hospital from July 1995 to January 1999. Infants were divided into two groups based on different parenteral nutrition guidelines : Old...
Ventricular Inhomogeneity and Beat-to-beat QT Interval Variability after Surgical Repair of Tetralogy of Fallot
Su-Hyun Kim, Myung-Kul Yum, Nam-Su Kim, Chang-Ryul Kim, Chul-Burm Lee, Chung-Ill Noh, Hee-Soo Kim
Clin Exp Pediatr. 2001;44(4):418-425.   Published online April 15, 2001
Purpose : The object of this study is to determine whether QT interval variability in patients with postoperative tetralogy of Fallot increases. Methods : We enrolled 41 patients who had total correction of tetralogy of Fallot, and 31 healthy controls. They were 6-12 years old. Patients were divided into 2 groups : arrhythmia-positive patients(n=10) who had ventricular premature contractions more than...
Risk Factors for Neonatal Sepsis in Premature Infants Admitted to Neonatal Intensive Care Unit
Chang-Ryul Kim, Jae-Won Oh, Myung-Kul Yum, Soo-Jee Moon
Clin Exp Pediatr. 2000;43(9):1174-1179.   Published online September 15, 2000
Purpose : The purpose of this study is to find out the risk factors of sepsis except the prematurity itself. Methods : Seventy-seven premature infants less than 37 weeks of gestation, who were admitted to the neonatal intensive care unit of Hanyang University Kuri Hospital between July 1995 and December 1996, were enrolled in this study. All 77 premature infants, 14...
Comparison of Phototherapy Guidelines for Neonatal Jaundice in Healthy Term Newborns
Hyo-Jung Kim, Chang-Ryul Kim, Jae-Won Oh, Myung-Kul Yum, Soo-Jee Moon
Clin Exp Pediatr. 1999;41(5):606-613.   Published online May 15, 1999
Purpose : We hypothesized that phototherapy, if the total serum bilirubin(TSB) is ≥14mg/dl, would decrease not only in frequency and duration, but complications due to phototherapy, such as weight loss, rash, temperature instability, feeding intolerance, and diarrhea, would decrease when compared to phototherapy TSB ≥10mg/dl after 48 hours of life in healthy term newborns without hemolysis. Methods : Forty healthy newborns...
Autonomic Activity, Cardiac Chaos and Circadian Rhythm in Asymptomatic Children with Postoperative Tetralogy of Fallot
Myung-Kul Yum, Nam-Su Kim, Jae-Won Oh, Chang-Ryul Kim, Chul-Burm Lee, June Huh, Chung-Il Noh
Clin Exp Pediatr. 1998;41(11):1517-1529.   Published online November 15, 1998
Purpose : This study aimed to characterize the autonomic and chaotic control of heart rate and circadian rhythm in asymptomatic patients with postoperative tetralogy of Fallot(pTOF). Methods : Twenty-four-hour electrocardiogram recordings were obtained in 30 asymptomatic pTOF patients and in 30 age-and sex-matched controls, aged between 6 and 11 years. The data was digitized and partitioned into sections of 30-...
Developmental Changes of Spectral and Chaotic Indexes of Heart Rate Variability in Normal Fetuses
Jee-Young Jung, Myung-Kul Yum, Nam-Su Ki, Jae-Won Oh, Chang-Ryul Kim, Jung Hye Hwang, Moon-Il Park
Clin Exp Pediatr. 1998;41(10):1380-1388.   Published online October 15, 1998
Purpose : The purposes of this study were to determine the normal values of spectral and chaotic indexes and to assess the maturational process of autonomic and chaotic control of fetal heart rate according to gestational age. Methods : Three hundred and thirty-seven mothers with normal singleton pregnancies, who were 23 weeks or more in gestational age, was randomly chosen. For...