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Original Article
Re-Evaluation of Neonatal Screening Tests for Inborn Errors of Metabolism with Dried Filter Paper Blood Spots
Kye Shik Shim, Jin Soon Hwang, Jung Sub Lim, Se Young Kim, Choong Ho Shin, Sei Won Yang, Jung Hwan Choi, Chong Ku Yun, Jung-Han Song
Clin Exp Pediatr. 1999;42(12):1639-1644.   Published online December 15, 1999
Purpose : There have been high rates of false positive and recall in neonatal screening test using the cut-off points set by the manufacturing company. So, it is necessary to re-evaluate the cut off values to minimize the false positive rates. Methods : We collected capillary blood in dry filter paper from 996 healthy neonates on the third day in cases...
Erratum
Association of Early Postnatal Neutropenia and Development of Bronchopulmonary Dysplasia in Preterm Infants
Hee Seok Kim, Jun Dong Park, Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1998;41(8):1033-1040.   Published online August 15, 1998
Purpose : To see if a similar relationship exists between the decreased number of circulating neutrophils and the development of bronchopulmonary dysplasia(BPD) in preterm infants, we tried to test the hypothesis that claims that preterm infants, who develop BPD, have decreased number of circulating neutrophils than those who do not develop BPD. Methods : A retrospective cohort study was conducted in...
Perinatal Factors Influencing Clinical Response to Surfactant Replacement Therapy in Neonates with Respiratory Distress Syndrome
June Dong Park, Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1998;41(8):1023-1032.   Published online August 15, 1998
Purpose : Surfactant replacement therapy significantly decreases neonatal complications and mortality in neonates with respiratory distress syndrome(RDS), but clinical responses to the treatment is not consistent. An analysis of the perinatal factors influencing the clinical response to the therapy is important for early detection of high risk and prognosis. The purpose of this study is to analyze the clinical...
Original Article
Comparison of Continuous versus Intermittent Infusion of Indomethacin in PDA of Preterm Infants
Yun Kyoung Lee, Hee Seok Kim, Kyoung Ran Park, Chan Hu Park, June Dong Park, Beyong Il Kim, Woong Heum Kim, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1998;41(5):599-605.   Published online May 15, 1998
Purpose : Patent ductus arteriosus(PDA) of prematurity is very important disease to study because it causes many cases of perinatal morbidity and its incidence is now increasing. Nowadays indomethacin is the drug of choice for PDA closure, but its use has been limited due to its side effects. Therefore, we compared the effect and side effects of indomethacin according to...
Comparison of Continuous Versus Intermittent Infusion of Indomethacin in PDA of Preterm Infants
Yun Kyoung Lee, Hee Seok Kim, Kyoung Ran Park, Chan Hu Park, June Dong Park, Beyong Il Kim, Woong Heum Kim, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1998;41(4):464-470.   Published online April 15, 1998
Purpose : Patent ductus arteriosus(PDA) of prematurity is very important disease to study because it causes many cases of perinatal morbidity and its incidence is now increasing. Nowadays indomethacin is the drug of choice for PDA closure, but its use has been limited due to its side effects. Therefore, we compared the effect and side effects of indomethacin according to the infusion method, continuous...
The Efficacy of Fetal Ultrasonography and Postnatal Abdominal Ultrasonography for the Diagnosis of Neonatal Abdominal Mass
Hee Eun Lee, Ee Kyung Kim, Hee Seok Kim, Yun Kyoung Lee, Chan Hwu Park, Kyung Ran Park, June Dong Park, Beyong Il Kim, Woong Heum Kim, Jung Hwan Choi, Gui Won Park, Hwang Choi, Yong Choi, Chong Ku Yun
Clin Exp Pediatr. 1998;41(3):299-306.   Published online March 15, 1998
Purpose : Most neonatal abdominal masses are benign in nature, but early detection and management is important to avoid the development of complications. So, we studied the causes of neonatal abdominal masses and the efficacy of ultrasonography for early detection and diagnosis. Methods : We reviewed 36 newborn infants with abdominal masses who had been admitted to the nursery and Neonatal...
Influence of Phototherapy on Incidence of Patent Ductus Arteriosus in Very Low Birth W eight Infants
Hee Seok Kim, Ee Kyung Kim, Yun Kyoung Lee, Hee Eun Lee, Chan Hwu Park, Kyung Ran Park, Jun Dong Park, Beyong Il Kim, Woong Heum Kim, Jung-Hwan Choi, Yong Su Yun, Chong Ku Yun, Jeong Mi Lee
Clin Exp Pediatr. 1997;40(10):1410-1418.   Published online October 15, 1997
Purpose : Patent ductus arteriosus(PDA) is a common disease in very low birth weight infants(VLBWI). Hemodynamically significant PDA increases the morbidity and mortality of premature infants. Based on experimental model, light inhibits the constriction of immature piglet' s ductal rings. No specific mechanism adequately explains the effect of light on the relaxation of PDA. Several hypotheses, including activation of photosensitive metabolites, alterations in receptors, or...
Hemodynamic Effect of Nitric Oxide Inhalation in the Acute Hypoxic Pulmonary Hypertension Induced Newborn Piglet
Yun Cil Chang, Won Soon Park, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1997;40(10):1394-1409.   Published online October 15, 1997
Purposes : Nitric oxide(NO) is classified as toxic gas in native states, but in most biologic systems NO acts as a messenger molecule. NO is known as endothelium derived relaxing factor that modulates tone of vascular smooth muscle. Inhaled NO has been reported to act as a selective pulmonary vasodilator and we expect that NO inhalation can be used as a successful treatment modality...
Relationship of Ultrasonographic Findings and Neurologic Outcome in Infants with Birth Weight of Less 2,000gm
Seong Won Yang, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1997;40(1):21-28.   Published online January 15, 1997
Genital Mycoplasmasin the Newborn Infants: Colonization, Prevalence and Clinical Significance
Yun Sil Chang, Sung Gwon Kim, Beyong Il Kim, Won Soon Park, Bo Hyun Yoon, Eui Chong Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1996;39(8):1084-1094.   Published online August 15, 1996
Purpose : The genital mycoplasmas: Ureaplasma urealyticum and Mycoplasma hominis have recently assumed an increasing importance as neonatal pathogens especially in preterm infants. The aim of the present study was to determine the prevalence of infections with these organisms in newborn infants who were admitted in Neonatal Intensive Care Unit(NICU) and who were suspected having infection in newborn nursery Methods : Sixty four inborns who...
Incidenceand Risk Factorsof the Retinopathy of Prematurity
June Dong Park, Jung Hae Kweon, Woong Heum Kim, Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun, Sang In Khwarg, Young Suk Yu
Clin Exp Pediatr. 1996;39(3):326-337.   Published online March 15, 1996
Purpose : Retinopathy of prematurity(ROP) continues to be a serious problem in infants who survived with neonatal intensive care. Nevertheless, there is neither available data about the incidence of ROP which may be the basis of the epidemiology, nor analysis of the risk factors of ROP in Korea. The purpose of this retrospective study was to evaluate the incidence of...
Incidence and Perinatal Risk Factors of Respiratory Distress Syndrome of Newborn
Yun Sil Chang, Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1994;37(8):1065-1077.   Published online August 15, 1994
Over a continuous 4-year period, from January 1989 till December 1992, 7,100 infants were born in Department of Obstetrics and admitted to Nursery or Neonatal Intensive Care Unit of Department of Pediatrics of Seoul National University Children's Hospital. Among them, 126 cases were diagnosed as respiratory distress syndrome (RDS) of newborn. The total incidence of RDS among all the newborns(inborn)was 1.77%....
Morphologic Changes of Lung Parenchymal Tissue in Neonatal Rat Pups under Chronic Hyperoxia
Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1994;37(8):1055-1064.   Published online August 15, 1994
We studied the effects of chronic hyperoxia (>95% oxygen for 14 days) in change of body weight, wet to dry ling weight ratio, and morphologic changes of lung tissue compared with that of room air (21% oxygen for 14 days) in Sprague-Dawley neonatal rat pups. The results were as follows: 1) In neonatal rat pups exposed to room air (normoxia group), body...
Meta-analysis of Impact of Neonatal Intensive Care on Neurodevelomental Outcome of Very Low Birth Weight Infants
Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1994;37(7):937-945.   Published online July 15, 1994
We analyzed neurodevelopmental outcome data of 36 selected studies. Data of individual studies were pooled by birth weight group: <800g, <1,000g, <1,500g and by time period of birth year: Period I(pre-intensive care era), 1960-67:Period II(beginning period of intensive care), 1968-76:and Period III(established period of intensive care), 1977-87. In all weight groups, survival and intact outcome rates based on live birth have...
Periventricular-Intraventricular Hemorrhage in the Full-term Infant
Hee Sup Kim, Beyong Il Kim, Jung-Hwan Choi, Chong Ku Yun, In One Kim
Clin Exp Pediatr. 1994;37(5):642-648.   Published online May 15, 1994
Intraventricular hemorrhage (IVH) is common in the premature infants and occurs mainly in subependymal germinal matrix. In contrast, IVH in the term infants is rare and different in pathogenesis and bleeding sites from those of the premature infants. Most studies of IVH in term infants have been studied by computerized tomography and postmortem examination. Brain ultrasonography which has become a...
Risk Factors and Outcome of Bronchopulmonary Dysplasia
Beyong Il Kim, Yun Sil Chang, Dong Woo Son, Hae Kyung Han, Jung-Hwan Choi, Chong Ku Yun, In One Kim, Kyung Mo Yeon, Je G. Chi
Clin Exp Pediatr. 1994;37(1):78-88.   Published online January 15, 1994
The 45 neonates with bronchopulmonary dysplasia among 355 neonates who were managed with mechanical ventilation and oxygen therapy in NICU of Seoul National University Chhildren's Hospital from January 1, 1968 to December 31, 1991, were analyzed for risk factors and outcome. The results were as follows: 1) The incidence of bronchopulmonary dysplasia was 12.7% 2) Respiratory Distress Syndrome was most common underlying problem. 3)...
Outcome in Infants of Mothers with Systemic Lupus Erythematosus
Chang Ryul Kim, Young Pyo Chang, Hee Seop Kim, Mi Jung Kim, Byung Il Kim, Jung-Hwan Choi, Chong Ku Yun, Bo Hyun Yoon, Hee Chul Syn, Syng Wook Kim, Seon Yang Park, Hahng Lee
Clin Exp Pediatr. 1993;36(6):791-804.   Published online June 15, 1993
A large proportion of patients with systemic lupus erythematosus(SLE) are women of reproductive age. Their fetal outcome is undoubtedly less favourable than in haelthy women. Although there is no evidence of an increase in congenital anomalies, increased frequencies of miscarriage, stillbirth, growth retardation, and preterm delivery are recognized It mainly depends on the compromise of uteroplacental circulation such as renal...
Case Report
Four Cases of Massive Infiltrating Congenital Cystic Hygroma Managed by Bleomycin Sclerosing Therapy
Hyun Kwack, Dong Wook Kim, Kyung Woon No, Jun Heo, Sun Young Kim, Young Pyo Jang, Jung-Hwan Choi, Chong Ku Yun, Seong En Jung, Gui Won Park, Woo Gi Kim, In Won Kim, Kyung Mo Yeon
Clin Exp Pediatr. 1992;35(8):1148-1156.   Published online August 15, 1992
Cystic hygroma is a true, benign, congenital multi-cystic tumor. It is thought to be arised from failure of the lymphatic system to communicate with the venous system. Frequently it occurs at birth, and it is found most commonly in the neck as painless and fluctuant mass. For many years, surgical excision has been considered as the treatment of choice. However, excision...
Transfusion-Acquired Cytomegalovirus Infections in Two Premature Infants
Dong Wook Kim, Kyung Un No, Mi Jung Kim, Soon Mee Park, Hee Sup Kim, Young Pyo Chang, Hoan Jong Lee, Jung-Hwan Choi, Chong Ku Yun, Je Geun Chi
Clin Exp Pediatr. 1992;35(8):1141-1147.   Published online August 15, 1992
Transfusion-acquired perinatal cytomegalovirus (CMV) infection can cause significant morbidity and mortality, particularly in premature infants with a birth wight of less than 1,500 gm. This recognizable syndrome consisted of deterioration of respiratory function, hepatosplenogaly, unusual gray pallor with disturbing septic appearance, lymphocytosis, thrombocytopenia and hemolytic anemia. We experienced transfusion-acquired CMV infections in 2 premature infants with a birth weight of...
Original Article
Cytomegalovirus Infection in Children: The Significance of CMV Specific IgM Antibody Test and Virus Isolation in the Urine
Dong Wook Kim, Hyun Kwack, Seong Hee Jang, I Seok Kang, Hoan Jong Lee, Jung-Hwan Choi, Jeong Kee Seo, Chong Ku Yun
Clin Exp Pediatr. 1992;35(7):890-901.   Published online July 15, 1992
The clinical pictures of 44 children with IgM antibody to CMV (cytomegalovirus) by ELISA(enzyme linked immunosorbent assay) were reviewed retrospectively, and the significance of serum CMV specific IgM antibody and virus isolation in the urine was analyzed. Age of the patients with IgM antibody to CMV ranged from 23 days to 8 years 7 months, and median age was 2 months....
The Perceptions and Attitudes of Parents and Medical Personnel Toward Fever of Children
Hyo Nam Cho, Jung-Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1992;35(6):776-787.   Published online June 15, 1992
Children commonly complain of suffering fever ; however, as studies have demonstrated, parents of a febrile infant or young child are inclined to become overly concerned. The pupose of this study was to investigate the perceptions and attitudes of medical personnel as well as parents. The parents of 189 children and 150 medical personnel (47 nurse-aides, 56 nurses, and 47 doctors)...
Congenital cystic diseases of the lung.
Won Soon Park, Young Pyo Chang, Hee Ju Kim, Young Yull Koh, Jung Hwan Choi, Chong Ku Yun, Joo Hyun Kim
Clin Exp Pediatr. 1991;34(12):1671-1677.   Published online December 31, 1991
Congenital cystic diseases of the lung (CCDL) is a clinical group of disorders characterized by a cystic appearance of pulmonary tissue. It can be classified into four distinct categories: 1) Congenital lobar emphysema (CLE), 2) Congenital cystic adenomatoid malformation (CCAM), 3) Pulmonary sequeestration (PS), and ^Bronchogenic cyst (BC). 24 patients with CCDL admitted to the Seoul National University Children’s Hospital from January 1984 to June...
Mechanical ventilator care in the newborn infants.
Young Pyo Chang, Yong Won Park, Won Soon Park, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1991;34(11):1526-1533.   Published online November 30, 1991
The widespread introduction of mechanically assisted ventilation into the neonatal intensive care during the 1960s substantially improved the outcome of sick newborn infants, particularly those with respiratory disorders. We studied the clinical features of 82 neonates, who were treated with mechanically assisted ventilation in Neonatal Intensive Care Unit (NICU) at Seoul National Univer- sity Children’s Hospital from January 1986 to August 1989 (the second...
A case of pulmonary vascular air embolism in the newborn.
Won Soon Park, Beom Soo Park, Hye Kyung Han, Jung Hwan Choi, Chong Ku Yun, Kyoung Mo Yeon, Je Geun Chi
Clin Exp Pediatr. 1991;34(10):1422-1427.   Published online October 31, 1991
Pulmonary vascular air embolism is a rare, and almost invariably fatal complication of positive pressure ventilation of newborn infants. There have only been 53 cases described in the world literature to date. We have experienced a case of pulmonary vascular air embolism in a premature newborn as a complication of mechanical ventilation during the course of respiratory distress syndrome. The pathophysiology and clinical characteristics of...
Indomethacin therapy in premature infants with patent ductus arteriosus.
Dug Ha Kim, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1991;34(10):1381-1390.   Published online October 31, 1991
Patent ductus arteriosus (PDA) is a common disease that occurred in 20 〜 40 percent of premature infants. The incidence of PDA is inversely related to the gestational age and birth weight. Hemodynamically significant PDA increases the morbidity and mortality of premature infants. So, the management of PDA is one of the major problems in neonatal intensive care unit. Based on experimental animal studies,...
A clinical study on neonatal bacterial meningitis.
Yong Won Park, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1991;34(6):763-770.   Published online June 30, 1991
Clinical courses of 12 neonates who were confirmed as neonatal bacterial meningitis by CSF culture or CSF latex agglutination test from January, 1986 to June, 1990, emphasizing on their complications and treatments, were evaluated. The results were summarized as follows; 1) The most common etiologic organism was E. coli (33.3%). 2) Two most common complications were ventriculitis (66.7%) and hydrocephalus (66.7%). 3) EVD with intraventricular antibiotics therapy was only...
Clinical analysis on fetal and neonatal arrhythmia.
Young Ah Lee, Chung Il Noh, Jung Hwan Choi, Jung Yun Choi, Yong Soo Yun, Chong Ku Yun
Clin Exp Pediatr. 1991;34(4):507-514.   Published online April 30, 1991
저자들은 최근 5년 8개월 동안 서울대학교병원 소아과에서 경험한 태아 및 신생아기의 심부정맥 24 례에 대하여, 이들의 심전도, 심초음파도, 24시간 심전도 소견 및 임상 기록을 통하여，부정맥의 유 형과 여러 연관 요소에 대한 임상적 분석을 시행하였다. 발견된 부정맥은 심실조기수축 7례, 심방조 기수축 5례，상실성 빈맥 7례，동성서맥 2례, 심방조동 1례, 지속적인 1도 방실 블록 1례, 심실 빈맥 1례였다. 심장 이상은 10례（2 ASD : 4례, PDA : 1례，ASD+VSD :...
A clinical observation on chylothorax in childhood.
Mi Jin Jung, Joon Jai Kim, Young Ah Lee, Chung Il Noh, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1991;34(4):497-506.   Published online April 30, 1991
Fourteen patients who had developed a chylothorax in childhood during a ten year period, from Jan. 1979 to July 1989, were reviewed by their hospital records. The chylothoraces occurred most frequently as complications of cardiothoracic surgeries in eight patients(57%). Four cases followed extrapericardial operations such as ligation of PDA and take-down of Blalock-Taussig shunt, and four cases followed intrapericardial operations such as corrective operations...
Acute pyogenic arthritis of hip in neonate and infant.
Mi Jung Kim, Young Ah Lee, Young Pyo Chang, Hoan Jong Lee, Jung Hwan Choi, Chong Ku Yun, Hak Jin Min, In Ho Choi
Clin Exp Pediatr. 1991;34(2):197-205.   Published online February 28, 1991
Acute pyogenic arthritis of hip is a serious infection that can lead to truly devastating complica- tions especially in neonatal period and infancy. Clinical survey on twelve neonates and infants (14 hip joints) with acute pyogenic arthritis of hip who were admitted to the Departments of Pediatrics and Orthopedic Surgery, Seoul National University Hospital from Jan. 1980 to Dec. 1989 were done. The results...
A Clinical Study of Periventricular-Intraventricular Hemorrhage in Very Low Birth Weight Infants.
Myoung Jae Chey, Young Pyo Chang, Jung Hwan Choi, Yong Seung Hwang, Chong Ku Yun, In One Kim, Kyung Mo Yeon
Clin Exp Pediatr. 1990;33(10):1341-1352.   Published online October 31, 1990
34 very low birth weight infants weighing 1,500 gms or less, who were admitted to the neonatal intensive care unit of Seoul National University Children’s Hospital, were routinely studied with serial real-time brain ultrasonography from August 1, 1986 to July 31, 1988. Their medical records and the results of brain ultrasonography were analyzed to evaluate propor- tion, severity, timing, clinical findings, outcome, associated periventricular...