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Original Article
Nephrology (Genitourinary)
Variation in clinical usefulness of biomarkers of acute kidney injury in young children undergoing cardiac surgery
Hee Sun Baek, Youngok Lee, Hea Min Jang, Joonyong Cho, Myung Chul Hyun, Yeo Hyang Kim, Su-Kyeong Hwang, Min Hyun Cho
Clin Exp Pediatr. 2020;63(4):151-156.   Published online February 5, 2020
Question: Can clinical usefulness of biomarkers of acute kidney injury vary on the clinical circumstances?
Finding: In young children undergoing cardiac surgery, urine KIM-1/Cr level peaked at 24 hours with significant difference from baseline level and was significantly higher at 6 hours in the AKI group. However, urine NGAL/Cr and IL-18/Cr levels showed no specific trend with time for 48 hours after cardiac surgery.
Meaning: Urine KIM-1/Cr concentration could be considered a good biomarker for early AKI prediction after open cardiac surgery in young children.
Cardiology
Importance of pulmonary valve morphology for pulmonary valve preservation in tetralogy of Fallot surgery: comparison of the echocardiographic parameters
Su Jin Choi, Jung Eun Kwon, Da Eun Roh, Myung Chul Hyun, Hanna Jung, Young Ok Lee, Joon Yong Cho, Yeo Hyang Kim
Clin Exp Pediatr. 2020;63(5):189-194.   Published online November 8, 2019
Question: Is echocardiographic examination is useful for surgical method decision in patients with tetralogy of Fallot (TOF)?
Finding: Various echocardiographic parameters serve as predictors for determining surgical methods for TOF patients. However, the PV morphology and tissue characteristics should also be considered.
Meaning: A full dependence on the size of the pulmonary valve annulus (PVA), the z score, and the ratio of the size of PVA to aortic valve annulus or descending aorta surgery may result in inadequate surgical results during TOF total correction.
Radiofrequency catheter ablation of atrioventricular nodal reentry tachycardia in children and adolescents: a single center experience
Myung Chul Hyun
Clin Exp Pediatr. 2017;60(12):390-394.   Published online December 22, 2017
Purpose

Atrioventricular nodal reentry tachycardia (AVNRT) is less common in pediatric patients than in adult patients. Thus, data for pediatric AVNRT patients are insufficient. Hence, we aimed to analyze the patient characteristics, treatment, and any recurrences in pediatric AVNRT patients.

Methods

We reviewed the records of 50 pediatric AVNRT patients who had undergone radiofrequency catheter ablation (RFCA) between January 1998 and December 2016...

Comparison between Kawasaki disease with lymph-node-first presentation and Kawasaki disease without cervical lymphadenopathy
Jung Ok Kim, Yeo Hyang Kim, Myung Chul Hyun
Clin Exp Pediatr. 2016;59(2):54-58.   Published online February 29, 2016
Purpose

We evaluated the characteristics of patients with Kawasaki disease (KD) who presented with only fever and cervical lymphadenopathy on admission, and compared them with the characteristics of those who presented with typical features but no cervical lymphadenopathy.

Methods

We enrolled 98 patients diagnosed with KD. Thirteen patients had only fever and cervical lymphadenopathy on the day of admission (group 1), 31 had...

Sensorineural hearing loss in patients with Kawasaki disease
Sun Young Park, Young Hyun Kim, Yeo Hyang Kim, Myung Chul Hyun, Young Hwan Lee
Clin Exp Pediatr. 2015;58(11):434-439.   Published online November 22, 2015
Purpose

Kawasaki disease involves acute febrile systemic vasculitis that can cause a variety of symptoms by affecting various organs. Here, we aimed to evaluate the prevalence, causes, and prognosis of sensorineural hearing loss (SNHL) occurring in children with Kawasaki disease.

Methods

Patients who were diagnosed with Kawasaki disease and received inpatient treatment in the Pediatrics Department at one of three university hospitals in...

Outcome of inflammatory response after normothermia during cardiopulmonary bypass surgery in infants with isolated ventricular septal defect
Dong Sub Kim, Sang In Lee, Sang Bum Lee, Myung Chul Hyun, Joon Yong Cho, Young Ok Lee
Clin Exp Pediatr. 2014;57(5):222-225.   Published online May 31, 2014
Purpose

A recent study analyzing several cytokines reported that long cardiopulmonary bypass (CPB) time and long aortic cross clamp (ACC) time were accompanied by enhanced postoperative inflammation, which contrasted with the modest influence of the degree of hypothermia. In this present study, we aimed to examine the effect of CPB temperature on the clinical outcome in infants undergoing repair of isolated...

Predictors of nonresponse to intravenous immunoglobulin therapy in Kawasaki disease
Hyo Min Park, Dong Won Lee, Myung Chul Hyun, Sang Bum Lee
Clin Exp Pediatr. 2013;56(2):75-79.   Published online February 25, 2013
Purpose

It has been reported that 10% to 20% of children with Kawasaki disease (KD) will not respond to intravenous immunoglobulin (IVIG) treatment. In this study, we aimed to identify useful predictors of therapeutic failure in children with KD.

Methods

We examined 309 children diagnosed with KD at the Kyungpook National University Hospital and the Inje University Busan Paik Hospital between January 2005...

Clinical features and surgical outcomes of complete transposition of the great arteries
Suk Jin Hong, Hee Joung Choi, Yeo Hyang Kim, Myung Chul Hyun, Sang Bum Lee, Joon Yong Cho
Clin Exp Pediatr. 2012;55(10):377-382.   Published online October 29, 2012
Purpose

This single-center study aimed to assess the clinical features and surgical approaches and outcomes of complete transposition of the great arteries (TGA).

Methods

TGA patients who had undergone surgical correction at the Kyungpook National University Hospital from January 2000 to December 2010, were retrospectively evaluated for patient characteristics, clinical manifestation, preoperative management, intraoperative findings, postoperative progress, and follow-up status.

Results

Twenty-eight patients (17 boys...

Wolff-Parkinson-White syndrome in young people, from childhood to young adulthood: relationships between age and clinical and electrophysiological findings
Hae Jung Jung, Hwang Young Ju, Myung Chul Hyun, Sang Bum Lee, Yeo Hyang Kim
Clin Exp Pediatr. 2011;54(12):507-511.   Published online December 31, 2011
Purpose

The aim of the present study was to evaluate the characteristics of electrophysiologic studies (EPS) and radiofrequency ablation (RFA) performed in subjects aged less than 30 years with Wolff-Parkinson-White (WPW) syndrome, particularly pediatric patients under 18 years of age, based on our experience.

Methods

Two hundred and one consecutive patients with WPW syndrome were recruited and divided to 3 groups according to...

Case Report
Secondary renal amyloidosis in a 13-year-old girl with bronchiectasis
Eun Ae Yang, Dong Won Lee, Myung Chul Hyun, Min Hyun Cho
Clin Exp Pediatr. 2010;53(7):770-773.   Published online July 31, 2010

A 13-year-old girl was diagnosed with non-cystic fibrosis (CF)-related multifocal bronchiectasis accompanied by nephrotic-range proteinuria of unknown cause. On renal biopsy, there were many segmental homogeneous deposits of amyloid tissue with positive Congo red staining in the glomeruli and interstitium. On electron microscopy, relatively straight, non-branching, randomly arranged amyloid fibrils were showed in the mesangium of the glomeruli. These fibrils...

Original Article
Early postoperative arrhythmias after open heart surgery of pediatric congenital heart diseas
Hee Joung Choi, Yeo Hyang Kim, Joon Yong Cho, Myung Chul Hyun, Sang Bum Lee, Kyu Tae Kim
Clin Exp Pediatr. 2010;53(4):532-537.   Published online April 15, 2010
Purpose : Early postoperative arrhythmias are a major cause of mortality and morbidity after open heart surgery in the pediatric population. We evaluated the incidence and risk factors of early postoperative arrhythmias after surgery of congenital heart disease. Methods : From January 2002 to December 2008, we retrospectively reviewed the medical records of the 561 patients who underwent cardiac surgery in Kyungpook National University...
NT-proBNP as a useful tool in diagnosing incomplete Kawasaki disease
Dong Won Lee, Yeo Hyang Kim, Myung Chul Hyun, Tae Chan Kwon, Sang Bum Lee
Clin Exp Pediatr. 2010;53(4):519-524.   Published online April 15, 2010
Purpose : To determine the efficacy of the N-terminal fragment of B-type natriuretic peptide (NT-proBNP) as a useful diagnostic method in children with incomplete Kawasaki disease (KD). Methods : Ninety-six patients who were diagnosed as having KD between January 2008 and June 2009 were enrolled in the study. American Heart Association recommendations for diagnosis were used, and patients were divided into...
The changes in signal-averaged electrocardiogram after surgical correction of congenital heart disease
Yeo Hyang Kim, Hee Jung Choi, Gun Jik Kim, Joon Yong Cho, Myung Chul Hyun, Sang Bum Lee
Clin Exp Pediatr. 2009;52(12):1364-1369.   Published online December 15, 2009
Purpose : To analyze abnormal ventricular activation in childhood congenital heart disease induced by postoperative changes in ventricular volume and pressure and ventricular scar formation using signal-averaged electrocardiography (SAECG). Methods : Fifty-two patients who had undergone open heart surgery (OHS) were enrolled. Patients were divided into the following 3 groups: right ventricular volume overload (atrial septal defect, group1), left ventricular...
Case Report
Plastic bronchitis in children: 2 cases
Yeo Hyang Kim, Hee Jung Choi, Jung Ok Kim, Myung Chul Hyun
Clin Exp Pediatr. 2009;52(7):832-836.   Published online July 15, 2009
Plastic bronchitis is a rare disorder characterized by the formation of extensive, obstructing endobronchial casts. It is associated with asthma and complex cardiac defects such as those requiring the Fontan procedure. The treatment of plastic bronchitis comprises conventional therapy involving spontaneous expectoration and bronchoscopic removal and specific therapy with several new drugs. Herein, we describe the cases of 2 patients...
Original Article
Clinical features and results of recent total anomalous pulmonary venous connection : Experience in a university hospital (Clinical study of total anomalous pulmonary venous connection)
Mi Ae Chu, Byung Ho Choi, Hee Joung Choi, Yeo Hyang Kim, Joon Yong Cho, Myung Chul Hyun, Sang Bum Lee
Clin Exp Pediatr. 2009;52(2):194-198.   Published online February 15, 2009
Purpose : Active perioperative intervention and improvement on surgical technique has decreased the mortality rate of total anomalous pulmonary venous connection (TAPVC); however, when complicated with pulmonary venous obstruction, operative mortality is still high. The purpose of this study was to investigate the clinical course of TAPVC. Methods : Twenty-seven patients who were diagnosed with TAPVC (without other complex heart...
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