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Jae Kon Ko  (Ko JK) 20 Articles
Original Article
Clinical Features of Symptomatic Neonates with Ebstein's Anomaly
Hee Jin Cho, In Sil Lee, Jae Kon Ko
Clin Exp Pediatr. 2005;48(11):1212-1218.   Published online November 15, 2005
Purpose : Forward pulmonary blood flow may be absent in some neonates with Ebstein's anomaly by anatomical or functional pulmonary atresia in association with the elevated pulmonary vascular resistance, patent ductus arteriosus and tricuspid regurgitation. We reviewed the presentation and outcomes of symptomatic neonates with Ebstein's anomaly focusing on the pulmonary atresia. Methods : Clinical presentation and outcome of 15 symptomatic...
Clinical Lecture
Benign Arrhythmias in Infants and Children
Jae Kon Ko
Clin Exp Pediatr. 2005;48(1):1-5.   Published online January 15, 2005
Pediatricians often encounter some electrocardiographic abnormalities in infants and children. However, treatment or referral to pediatric cardiologist is not indicated for all arrhythmias. Many of them are benign in nature. Benign arrhythmias can be defined as the arrhythmias that no serious problem currently exists and no treatment is needed. The prognosis of benign arrhythmias is so good that the condition...
Original Article
Role of Transesophageal Pacing in Evaluation of Palpitation in Infants and Children
Su-Jeong Ryu, Jae Kon Ko, Young Hwue Kim, In Sook Park
Clin Exp Pediatr. 2003;46(1):51-55.   Published online January 15, 2003
Purpose : We intended to find out the role of transesophageal atrial pacing in evaluation of infants and children with palpitation of unknown origin. Methods : We tried transesophageal atrial pacing study in 69 infants and children with palpitation, in whom tachycardia wasn't documented in electrocardiogram and reviewed retrospectively the records of transesophageal pacing and medical records of theses patients to...
QT Dispersion after Chemotherapy with Anthracyclines in Children
Jae Kon Ko, Young Hwee Kim, In Sook Park, Jong Jin Seo, Hyung Nam Moon
Clin Exp Pediatr. 2001;44(8):908-915.   Published online August 15, 2001
Purpose : Anthracycline induced cardiotoxicity is well known and its pathology is characterized by localized myocardial cell necrosis and myocardial fibrosis. The variability in QT interval duration amongst the different leads of the standard 12-lead ECG(QT dispersion) is considered to reflect inhomogenous repolarization of the myocardium. The aim of this study was to assess the effects of anthracycline on cardiac...
Neuro-developmental Assessment of Patients with Transposition of the Great Arteries by Localized 1H-Magnetic Resonance Spectroscopy
Ki-Soo Kim, Jee-Yeon Min, So Young Yoon, Young Hwue Kim, Jae Kon Ko, In Sook Park, Ki-Soo Kim, Dong Man Seo, Sang-Tae Kim, Jung Hee Lee, In Kyung Sung
Clin Exp Pediatr. 2001;44(5):533-544.   Published online May 15, 2001
Purpose : The purpose of this study was to evaluate the hemodynamic effect of transposition of the great arteries(TGA) on neuro-development by measuring the cerebral metabolites before and 1 year after open heart surgery(OHS) by localized in vivo 1H-magnetic resonance spectroscopy(1H- MRS) along with Bayley scales of infants development II(BSID II). Methods : Full-term newborns(N=13) with TGA and intact ventricular septum...
Analysis of Malnutrition in Children with Congenital Heart Disease
Jeoung Eun Kim, Bo Hwa Choi, Kyung Mo Kim, Jae Kon Ko, Dong Man Seo
Clin Exp Pediatr. 2001;44(2):161-166.   Published online February 15, 2001
Purpose : Malnutrition and failure to thrive have long been recognized as common systemic consequences of congenital heart disease(CHD). But there is little data about the prevalence and severity of malnutrition with CHD in Korea. We designed this study to determine the prevalence of malnutrition among hospitalized children with CHD. Methods : We reviewed 100 hospitalized children with CHD who were...
The Usefulness of the Head-up Tilt Test for Diagnosis of Syncope in Pediatric Patients
Hye Jin Yun, Sun Hee Rim, So Young Yun, Jae Kon Ko, Young Hwue Kim, In Sook Park
Clin Exp Pediatr. 2001;44(12):1441-1447.   Published online December 15, 2001
Purpose : The purpose of this study is to examine the usefulness of the head-up tilt test for diagnosis of unexplained syncope in children. Methods : Head-up tilt test results and clinical features of 41 children with unexplained syncope, presyncope, dizziness and seizure were studied from January, 1997 through January, 2001 at Asan Medical Center. Medical records of children were reviewed retrospectively. The children...
Atrial Rhythms in Patients with Left Atrial Isomerism
Jae Kon Ko, Young Mee Suh, Young Hwee Kim, In Sook Park, Chang Yee Hong
Clin Exp Pediatr. 1999;42(11):1535-1541.   Published online November 15, 1999
Purpose : Histologic studies have revealed ectopic location and hypoplasia of sinus nodal tissue in left atrial isomerism. The purpose of this study is to characterize the atrial rhythms corresponding to these histologic abnormalities in left atrial isomerism. Electrocardiograms in left atrial isomerism are characterized by multiple atrial rhythms with abnormal P-wave axes, but the complex nature of atrial rhythms...
Living Related Donor Liver Transplantation in Children : Indication and Clinical Outcome
Kyung Mo Kim, Sung gyu Lee, Young Joo Lee, Kwang Min Park, Seong Chul Kim, Hoon Bae Chun, Eun Sil Yoo, Sang Hoon Han, Kyung Suk Ko, Mon Gyu Lee, Kyu Taek Choi, Jae Kon Ko, Hyung Nam Moon
Clin Exp Pediatr. 1998;41(5):622-632.   Published online May 15, 1998
The Clinical Study on Marfan Syndrome
Jung Sim Kim, Dong Kyu Jin, See Hwan Ko, Jee Yeon Min, I-Seok Kang, Kye Won Jeon, Yung Lan Choi, Heung Jae Lee, Seung Woo Park, Won Ro Lee, Chong Suh Lee, Sei Yeul Oh, Chang Won Ki, Han Wook Yoo, In Sook Park, Jae Kon Ko
Clin Exp Pediatr. 1998;41(10):1411-1416.   Published online October 15, 1998
Purpose : The aim of this study was to assess the involvement of several organs patients with Marfan syndrome in Korea. Also the clinical features in childhood patients with Marfan syndrome were assessed. Methods : Thirty-eight cases of Marfan syndrome were enrolled in this study. Clinical evaluations of the musculoskeletal, cardiovascular and occular system were performed in all cases. Results : The...
Early Results of Radiofrequency Catheter Ablation of Supraventricular Tachycardia in Children
Jae Kon Ko, Young Hwee Kim, Young Hwee Kim, Chang Yee Hong, Jae Joong Kim, You Ho Kim
Clin Exp Pediatr. 1997;40(9):1258-1264.   Published online September 15, 1997
Purpose : Although the data of radiofrequency catheter ablation(RFCA) of supraventricular tachycardia in adults has been accumulated in several centers in Korea, few data are available on its efficacy and safety in pediatric ages. We reviewed the data in young patients who underwent this procedure in a pediatric cardiology center, to evaluate the indications, early results, complications, and short-term follow-up data. Methods : We retrospectively...
Case Report
Four Cases of Pulmonary Artery Sling with Bridging Bronchus
Seung A Lee, Jung Yeon Shim, Young Hwue Kim, Jae Kon Ko, In Sook Park, Soo-Jong Hong, Chang Yee Hong
Clin Exp Pediatr. 1997;40(5):709-715.   Published online May 15, 1997
Pulmonary artery sling with bridging bronchus is not only rare but also difficult to diagnose unless specially sought. When young infant suffers from prolonged or recurrent wheezing, possibility of underlying anomalies of the tracheobronchial trees or great vessels should be considered, even though bronchiolitis and gastroesophageal reflux are the most common causes. We experienced four cases of pulmonary artery sling with...
Original Article
Tachycardia Induced Cardiomyopathy in Children
Jae Kon Ko, Young Hwee Kim, In Sook Park, Chang Yee Hong
Clin Exp Pediatr. 1997;40(1):55-62.   Published online January 15, 1997
Case Report
Catheter Ablation of Atrial Flutter Using Radiofrequency Energy in a Child :A Case Report
Jae Kon Ko, In Sook Park, Young Hwee Kim, Chang Yee Hong, Jae Joong Kim, You Ho Kim
Clin Exp Pediatr. 1996;39(10):1455-1460.   Published online October 15, 1996
Atrial flutter is a potentially life threatening complication of repair or palliation of congenital heart disease and is frequently drug resistant. Recent studies in human have demonstrated that common type atrial flutter is due to macro-reentry in the right atrium and that the reentrant circuit may involve slow conduction in the low posteroseptal area of the right atrium. Catheter ablation of atrial flutter has...
Original Article
Atrial Flutter Conversion in Infants and Children Using Transesophageal Atrial Pacing
Jae Kon Ko, Seoug Ho Kim, Eun Jung Bae, I Seok Kang, Heung Jae Lee
Clin Exp Pediatr. 1994;37(7):969-975.   Published online July 15, 1994
Atrial flutter is an infrequent, but potentially unstable tachyarrythmia that occurs in pediatric ages. Transesophageal atrial pacing was used for treatment of 10 episodes of atrial flutter in 7 patients. At the time of atrial flutter conversion, patients were 6 days to 14 years old. 6 patients had associated with congenital heart disease. The atrial cycle length of atrial flutter ranged from...
2 Case of Scimitar syndrome.
Jae Kon Ko, Nam Su Kim, Woong Heum Kim, Heung Jae Lee, Shi Joon Yoo
Clin Exp Pediatr. 1990;33(2):229-233.   Published online February 28, 1990
The scimitar syndrome, a rare complex anomaly, consists essentially of an anomalous pulmonary vein draining whole or part of right lung into inferior vena cava and its curved Turkish sword (scimitar) like appearance has provided the name of this syndrome. Associated anomalies are frequent, such as hypoplasia of the right lung and right pulmonary artery, abnormalities of bronchial architecture and lobation, rightward displacement of...
Percutaneous Transluminal Balloon Valvuloplasty for Congenital Pulmonary Valve Stenosis.
Heung Jae Lee, Jae Kon Ko, Woong Heum Kim, Nam Su Kim, Chang yee Hong
Clin Exp Pediatr. 1988;31(7):822-832.   Published online July 31, 1988
During the period of 2 years, between January 1986 and December 1987, 36 patients, aged 2 years to 18 years, with congenital pulmonary valve stenosis(PVS) (with peak systolic transvalvar gradient over 30 mmHg) underwent percutaneous transluminal balloon valvuloplasty(TBV) at Sejong General Hospital m Korea. Of a group of 36 patients, 26 were treated successfully by the conventional balloon valve dilatation technique, and 6 were treated...
Case Report
A Case of Kasabach-Merritt Syndrome.
Byong Lae Kim, Jeong Seo Koh, Woan Chul Suh, Jae Kon Ko
Clin Exp Pediatr. 1987;30(5):577-582.   Published online May 31, 1987
Kasabach-Merritt Syndrome is association of thrombocytopenia with giant hemangioma. A 20 days, male patient had thrombocytopenia, the hemangioma involved the skin of the right distal femur. This patient was placed on combined therapy with radiation and steroid. Following the conservative therapy, the hemangioma regressed and the platelet returned to normal range. We presented the case with brief review of the literatures.
Original Article
Clinical Studies on Ventricular Septal Defect with Septal Aneurysm.
Jae Kon Ko, Jung Yun Choi, Yong Soo Yun, Chang Yee Hong, Kyung Mo Yeon
Clin Exp Pediatr. 1986;29(5):504-509.   Published online May 31, 1986
Ninety-nine cases of ventricular septal defect with septal aneurysm which were confirmed by angiocardiography and 2-D echocardiography during the period of 2 years from 1983 to 1984 at SNUH were studied and analyzed. The summary of the findings are as follows: 1) Septal aneurysm was found in 99(26.9%) of 368 cases of total VSD and in 38.2% among membranous VSD....
Left Ventricular Function in Chronic Severe Anemia by Echocardiographic Study.
Jae Kon Ko, Chang Yee Hong
Clin Exp Pediatr. 1985;28(9):880-887.   Published online September 30, 1985
It is well known that chronic anemia is associated with hemodynamic alterations like increased cardiac output and stroke volume and decreased peripheral vascular resistance. Left ventricular size and function were studied by echocardiography in 16 chronic anemia patients, mainly aplastic anemia, without evidence of cardiac decompensation. Left ventricular dimension, stroke volume, ejection fraction and fractional shortening were calculated. The LV...
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