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Original Article
Cardiology
Change of voltage-gated potassium channel 1.7 expressions in monocrotaline-induced pulmonary arterial hypertension rat model
Hyeryon Lee, Kwan Chang Kim, Young Mi Hong
Clin Exp Pediatr. 2018;61(9):271-278.   Published online September 15, 2018

Purpose: Abnormal potassium channels expression affects vessel function, including vascular tone and proliferation rate. Diverse potassium channels, including voltage-gated potassium (Kv) channels, are involved in pathological changes of pulmonary arterial hypertension (PAH). Since the role of the Kv1.7 channel in PAH has not been previously studied, we investigated whether Kv1.7 channel expression changes in the lung tissue of a monocrotaline...
Review Article
Neonatology (Perinatology)
Transfusion practice in neonates
Do-Hyun Kim
Clin Exp Pediatr. 2018;61(9):265-270.   Published online September 6, 2018
Neonates, especially extremely low birth weight infants, are among the groups of patients undergoing transfusion frequently. Since they are exposed to higher specific transfusion risks compared to the patients of other age groups, there are many special aspects that must be considered for transfusion therapy in neonates. The transfusion risks in neonates include adverse outcomes specific for preterm infants as...
Erratum
Nephrology (Genitourinary)
Erratum: Pediatric kidney transplantation is different from adult kidney transplantation
Min Hyun Cho
Clin Exp Pediatr. 2018;61(8):264-264.   Published online August 15, 2018
Original Article
Pulmonology
Increased procalcitonin level is a risk factor for prolonged fever in children with Mycoplasma pneumonia
Ji Eun Jeong, Ji Eun Soh, Ji Hee Kwak, Hye Lim Jung, Jae Won Shim, Deok Soo Kim, Moon Soo Park, Jung Yeon Shim
Clin Exp Pediatr. 2018;61(8):258-263.   Published online August 15, 2018

Purpose: Macrolide-resistant Mycoplasma pneumoniae pneumonia (MPP) is characterized by prolonged fever and radiological progression despite macrolide treatment. Few studies have examined serum procalcitonin (PCT) level in children with MPP. We aimed to investigate the association of acute inflammation markers including PCT with clinical parameters in children with MPP. Methods: A total of 147 children were recruited. The diagnosis of MPP...
General Pediatrics
Use of child safety seats during transportation of newborns
Seon Hyuk Kim, Sung Won Park, Yeon Kyung Lee, Sun Young Ko, Son Moon Shin
Clin Exp Pediatr. 2018;61(8):253-257.   Published online August 15, 2018

Purpose: Child safety seats (CSS) are critical for the protection of children, in case of motor vehicle accidents. Although the national legislation mandates that all newborns must be placed in an appropriately installed CSS during transportation, people often do not perceive the importance of CSS and do not use it as recommended. The purpose of this survey was to understand...
Neonatology (Perinatology)
Patterns of ischemic injury on brain images in neonatal group B Streptococcal meningitis
Seo Yeol Choi, Jong-Wan Kim, Ji Won Ko, Young Seok Lee, Young Pyo Chang
Clin Exp Pediatr. 2018;61(8):245-252.   Published online August 15, 2018

Purpose: This study investigated patterns of ischemic injury observed in brain images from patients with neonatal group B Streptococcal (GBS) meningitis. Methods: Clinical findings and brain images from eight term or near-term newborn infants with GBS meningitis were reviewed. Results: GBS meningitis was confirmed in all 8 infants via cerebrospinal fluid (CSF) analysis, and patients tested positive for GBS in both blood and CSF cultures....
The impact of a quality improvement effort in reducing admission hypothermia in preterm infants following delivery
Han Saem Choi, Soon Min Lee, Hoseon Eun, Minsoo Park, Kook-In Park, Ran Namgung
Clin Exp Pediatr. 2018;61(8):239-244.   Published online August 15, 2018

Purpose: Hypothermia at admission is associated with increased mortality and morbidity in preterm infants. We performed a quality improvement (QI) effort to determine the impact of a decrease in admission hypothermia in preterm infants. Methods: The study enrolled very low birth weight (VLBW) infants born at Gangnam Severance Hospital between January 2013 and December 2016. This multidisciplinary QI effort included the...
Review article
Nutrition
Prevalence of underweight and wasting in Iranian children aged below 5 years: a systematic review and meta-analysis
Yousef Moradi, Fatemeh Khosravi Shadmani, Kamyar Mansori, Shiva Mansouri Hanis, Rozhin Khateri, Hossein Mirzaei
Clin Exp Pediatr. 2018;61(8):231-238.   Published online August 15, 2018

Purpose: Wasting and underweight are the 2 main indicators of children’s undernutrition. We aimed to estimate the prevalence of undernutrition at the national level in Iran. Methods: We performed a search for original articles published in international and Iranian databases including MEDLINE, Web of Science, Google Scholar, Scopus, CINHAL (Cumulative Index to Nursing and Allied Health Literature), Scientific Information Database, Irandoc,...
Original Article
Endocrinology
Changes of the growth plate in children: 3-dimensional magnetic resonance imaging analysis
Hyung Ho Yun, Hyun-Jung Kim, Min-Sun Jeong, Yun-Sun Choi, Ji-Young Seo
Clin Exp Pediatr. 2018;61(7):226-230.   Published online July 15, 2018

Purpose: This pilot study assessed changes in the growth plate and growth rates in children during a 6-month period. Methods: The study included 31 healthy children (17 boys, 14 girls) under evaluation for growth retardation. Height, weight, bone age, insulin like growth factor-1 (IGF-1), and insulin like growth factor binding protein 3 (IGF-BP3) were measured at baseline and after 6 months....
Final height of Korean patients with early treated congenital hypothyroidism
Jiyun Lee, Jeongho Lee, Dong Hwan Lee
Clin Exp Pediatr. 2018;61(7):221-225.   Published online July 15, 2018

Purpose: Congenital hypothyroidism (CH) is the most common endocrine disorder in children. Thyroid hormone deprivation results not only in mental retardation but also growth retardation. This study investigates the final height (FH) in Korean patients with CH detected by newborn screening and examines factors that may affect the FH. Methods: The medical records of Korean CH patients (n=45) were reviewed. The...
Autoimmunity and intestinal colonization by Candida albicans in patients with type 1 diabetes at the time of the diagnosis
Semra Gürsoy, Tuba Koçkar, Sezen Ugan Atik, Zerrin Önal, Hasan Önal, Erdal Adal
Clin Exp Pediatr. 2018;61(7):217-220.   Published online July 15, 2018

Purpose: Type 1 diabetes mellitus (T1DM) is a chronic and immune-mediated disease, which is characterized by the progressive destruction of pancreatic beta cells. T1DM precipitates in genetically susceptible individuals through environmental factors. In this study, we aimed to evaluate the impact of autoimmunity and intestinal colonization of Candida albicans on the development of T1DM. Methods: Forty-two patients newly diagnosed with T1DM...
Cardiology
Outcome of neonatal palliative procedure for pulmonary atresia with ventricular septal defect or tetralogy of Fallot with severe pulmonary stenosis: experience in a single tertiary center
Tae Kyoung Jo, Hyo Rim Suh, Bo Geum Choi, Jung Eun Kwon, Hanna Jung, Young Ok Lee, Joon Yong Cho, Yeo Hyang Kim
Clin Exp Pediatr. 2018;61(7):210-216.   Published online July 15, 2018

Purpose: The present study aimed to evaluate progression and prognosis according to the palliation method used in neonates and early infants aged 3 months or younger who were diagnosed with pulmonary atresia with ventricular septal defect (PA VSD) or tetralogy of Fallot (TOF) with severe pulmonary stenosis (PS) in a single tertiary hospital over a period of 12 years. Methods: Twenty...
Review Article
Nephrology (Genitourinary)
Pediatric kidney transplantation is different from adult kidney transplantation
Min Hyun Cho
Clin Exp Pediatr. 2018;61(7):205-209.   Published online July 15, 2018
Kidney transplantation (KT) is the gold standard for renal replacement therapy in pediatric patients with end-stage renal disease. Recently, it has been observed that the outcome of pediatric KT is nearly identical to that in adults owing to the development and application of a variety of immunosuppressants and newer surgical techniques. However, owing to several differences in characteristics between children...
Case Report
Allergy
Breast abscess caused by Staphylococcus aureus in 2 adolescent girls with atopic dermatitis
Sung Man Park, Won Sik Choi, YoonSun Yoon, Gee Hae Jung, Chang Kyu Lee, So Hyun Ahn, Yoon Wonsuck, Young Yoo
Clin Exp Pediatr. 2018;61(6):200-204.   Published online June 25, 2018

Atopic dermatitis (AD) is a chronic inflammatory skin disease in children. Patients with AD experience a high rate of colonization of the skin surface by Staphylococcus aureus. Because of a skin barrier defect, there is a potential risk of staphylococcal invasive infection in patients with AD. Here, we present 2 cases of breast abscess caused by S. aureus in 2...

Original Article
Neurology
Outcome of ultrasonographic imaging in infants with sacral dimple
Jin Hyuk Choi, Taekwan Lee, Hyeok Hee Kwon, Sun Kyoung You, Joon Won Kang
Clin Exp Pediatr. 2018;61(6):194-199.   Published online June 25, 2018
Purpose

Sacral dimples are a common cutaneous anomaly in infants. Spine ultrasonography (USG) is an effective and safe screening tool for patients with a sacral dimple. The aim of this study was to determine the clinical manifestations in patients with an isolated sacral dimple and to review the management of spinal cord abnormalities identified with USG.

Methods

We reviewed clinical records and collected...

Cardiology
The outcome of percutaneous stent implantation in congenital heart disease: experience of a single institute
Moon Sun Kim, Ja Kyoung Yoon, Seong Ho Kim, Ji Seok Bang, So Ick Jang, Sang Yoon Lee, Eun Young Choi, Su Jin Park, Hye Won Kwon
Clin Exp Pediatr. 2018;61(6):187-193.   Published online June 25, 2018
Purpose

The efficacy of percutaneous stent implantation for congenital heart disease (CHD) in Korea, where stent availability is limited, has not been determined. This study evaluated the acute and midterm results of stent implantation in different CHD subgroups.

Methods

Stents were implanted in 75 patients with 81 lesions: (1) pulmonary artery stenosis (PAS) group, 56 lesions in 51 patients; (2) coarctation of the...

Infection
Clinical and laboratory profiles of hospitalized children with acute respiratory virus infection
Eunjin Choi, Kee-Soo Ha, Dae Jin Song, Jung Hwa Lee, Kwang Chul Lee
Clin Exp Pediatr. 2018;61(6):180-186.   Published online June 25, 2018
Purpose

Despite the availability of molecular methods, identification of the causative virus in children with acute respiratory infections (ARIs) has proven difficult as the same viruses are often detected in asymptomatic children.

Methods

Multiplex reverse transcription polymerase chain reaction assays were performed to detect 15 common respiratory viruses in children under 15 years of age who were hospitalized with ARI between January 2013...

Review Article
Gastroenterology
Esophageal perforation in children: etiology and management, with special reference to endoscopic esophageal perforation
Krishna Kumar Govindarajan
Clin Exp Pediatr. 2018;61(6):175-179.   Published online June 25, 2018

Perforation of the esophagus is an uncommon problem with significant morbidity and mortality. In children undergoing endoscopy, the risk of perforation is higher when interventional endoscopy is performed. The clinical features depend upon the site of esophageal perforation. Opinions vary regarding the optimal treatment protocol, and the role of conservative management in this context is not well established. Esophageal perforation...

Original Article
Cardiology
Differentiation between incomplete Kawasaki disease and secondary hemophagocytic lymphohistiocytosis following Kawasaki disease using N-terminal pro-brain natriuretic peptide
Jung Eun Choi, Yujin Kwak, Jung Won Huh, Eun-Sun Yoo, Kyung-Ha Ryu, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2018;61(5):167-173.   Published online May 28, 2018
Purpose

Hemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome with many causes, including Kawasaki disease (KD). The purpose of this study was to identify the laboratory tests needed to easily differentiate KD with HLH from incomplete KD alone.

Methods

We performed a retrospective study on patients diagnosed with incomplete KD and incomplete KD with HLH (HLH-KD) between January 2012 and March 2015. We compared...

Clinical implications in laboratory parameter values in acute Kawasaki disease for early diagnosis and proper treatment
Yu-Mi Seo, Hyun-Mi Kang, Sung-Churl Lee, Jae-Won Yu, Hong-Ryang Kil, Jung-Woo Rhim, Ji-Whan Han, Kyung-Yil Lee
Clin Exp Pediatr. 2018;61(5):160-166.   Published online May 28, 2018
Purpose

This study aimed to analyse laboratory values according to fever duration, and evaluate the relationship across these values during the acute phase of Kawasaki disease (KD) to aid in the early diagnosis for early-presenting KD and incomplete KD patients.

Methods

Clinical and laboratory data of patients with KD (n=615) were evaluated according to duration of fever at presentation, and were compared between...

Neonatology (Perinatology)
Diagnostic and prognostic value of proadrenomedullin in neonatal sepsis
Sameh Samir Fahmey, Heba Mostafa, Noha Abd Elhafeez, Heba Hussain
Clin Exp Pediatr. 2018;61(5):156-159.   Published online May 28, 2018
Purpose

Sepsis is a major cause of neonatal morbidity and mortality. Early diagnosis is a major problem because of the lack of specific clinical signs. Therefore, a reliable diagnostic marker is needed to guide the use of antimicrobial agents. The objective of our study was to assess the value of proadrenomedullin (pro-ADM) in establishing the diagnosis and evaluating the prognosis of...

Neurology
Long-term prenatal stress increases susceptibility of N-methyl-D-aspartic acid-induced spasms in infant rats
Hyeok Hee Kwon, Taekwan Lee, Jinpyo Hong, Dong Woon Kim, Joon Won Kang
Clin Exp Pediatr. 2018;61(5):150-155.   Published online May 28, 2018
Purpose

Infantile spasms, also known as West syndrome, is an age-specific epileptic seizure. Most patients with this condition also exhibit delayed development. This study aimed to determine the effect of long-term prenatal stress on susceptibility to infantile spasms.

Methods

We subjected pregnant rats to acute or chronic immobilization stress. Resulting offspring received N-methyl-D-aspartic acid (15 mg/kg, intraperitoneally) on postnatal day 15, and their...

Review Article
General Pediatrics
The 2017 Korean National Growth Charts for children and adolescents: development, improvement, and prospects
Jae Hyun Kim, Sungha Yun, Seung-sik Hwang, Jung Ok Shim, Hyun Wook Chae, Yeoun Joo Lee, Ji Hyuk Lee, Soon Chul Kim, Dohee Lim, Sei Won Yang, Kyungwon Oh, Jin Soo Moon; for the Committee for the Development of Growth Standards for Korean Children and Adolescents, the Committee for School Health and Public Health Statistics; the Committee for School Health and Public Health Statistics; the Korean Pediatric Society, and Division of Health and Nutrition Survey; Korea Centers for Disease Control and Prevention
Clin Exp Pediatr. 2018;61(5):135-149.   Published online May 28, 2018

Growth charts are curves or tables that facilitate the visualization of anthropometric parameters, and are widely used as an important indicator when evaluating the growth status of children and adolescents. The latest version of the Korean National Growth Charts released in 2007 has raised concerns regarding the inclusion of data from both breastfed and formula-fed infants, higher body mass index...

Case Report
Gastroenterology
Intestinal duplication revealed by posterior reversible encephalopathy syndrome
Yosra Kerkeni, Hela Louati, Mourad Hamzaoui
Clin Exp Pediatr. 2018;61(4):132-134.   Published online April 23, 2018

We report a unique case of intestinal duplication detected on posterior reversible encephalopathy syndrome (PRES) in a 13-year-old girl. She was admitted to the pediatric Emergency Department because of generalized seizures. Radiological assessment revealed a large, well-defined, thick-walled cystic lesion in the mid abdomen, suggestive of duplication cyst associated to a PRES. Exploration confirmed the diagnosis of ileal duplication cyst,...

Original Article
Nephrology (Genitourinary)
Hypercalciuria and febrile convulsion in children under 5 years old
Vahid Seddighi Gorabi, Bahram Nikkhoo, Obeidollah Faraji, Mona Mohammadkhani, Sattar Mirzaee, Mohammad Aziz Rasouli, Abdorrahim Afkhamzadeh
Clin Exp Pediatr. 2018;61(4):129-131.   Published online April 23, 2018
Purpose

The association between hypercalciuria and febrile convulsion is controversial. The present study aimed to investigate the statistical association between hypercalciuria and childhood febrile convulsions.

Methods

Overall, 160 children aged 6 months to 5 years, including 80 children with febrile convulsion and 80 febrile children without convulsion (comparison group), were recruited. All laboratory tests, including 24-hour urine calcium, were undertaken in an academic...

Endocrinology
The association of total blood mercury levels and overweight among Korean adolescents: analysis of the Korean National Health and Nutrition Examination Survey (KNHANES) 2010–2013
Yi-Yeon Shin, In-Kyung Ryu, Mi-Jung Park, Shin-Hye Kim
Clin Exp Pediatr. 2018;61(4):121-128.   Published online April 23, 2018
Purpose

Obesity has been associated with higher total blood mercury levels, based on animal studies; however, studies that focus on children and adolescents are lacking. We aimed to assess the association between total blood mercury levels and the incidence of overweight and abdominal obesity in Korean adolescents.

Methods

The study population comprised 1,567 adolescents (793 boys and 774 girls; aged 10–19 years), who...

Neonatology (Perinatology)
TORCH (toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus) screening of small for gestational age and intrauterine growth restricted neonates: efficacy study in a single institute in Korea
Mi Hae Chung, Chan Ok Shin, Juyoung Lee
Clin Exp Pediatr. 2018;61(4):114-120.   Published online April 23, 2018
Purpose

Routine screening for toxoplasmosis, rubella, cytomegalovirus (CMV), and herpes simplex virus (TORCH) in intrauterine growth restriction (IUGR) and small for gestational age (SGA) neonates has become a common practice. However, the incidence of TORCH varies across countries, and the cost of TORCH testing may be disadvantageous compared to disease-specific screening. To evaluate the efficacy of TORCH screening, the medical charts...

General Pediatrics
Sudden unexpected cardio-respiratory arrest after venipuncture in children
Goun Jeong, Son Moon Shin, Nam Su Kim, Young Min Ahn
Clin Exp Pediatr. 2018;61(4):108-113.   Published online April 23, 2018
Purpose

This study aimed to investigate the clinical and socioenvironmental characteristics of sudden cardiorespiratory arrest after venipuncture in children.

Methods

We conducted a retrospective email-based survey of all members of the Korean Pediatric Society. The questionnaire included items on patient demographics, socioenvironmental circumstances of the venipuncture, type of cardiorespiratory arrest, symptoms and signs, treatment, prognosis, and presumed cause of the arrest.

Results

Fourteen patients were...

Review Article
Neurology
Epilepsy syndromes during the first year of life and the usefulness of an epilepsy gene panel
Eun Hye Lee
Clin Exp Pediatr. 2018;61(4):101-107.   Published online April 23, 2018

Recent advances in genetics have determined that a number of epilepsy syndromes that occur in the first year of life are associated with genetic etiologies. These syndromes range from benign familial epilepsy syndromes to early-onset epileptic encephalopathies that lead to poor prognoses and severe psychomotor retardation. An early genetic diagnosis can save time and overall cost by reducing the amount...

Original Article
Nephrology (Genitourinary)
Acute kidney injury in pediatric patients with rhabdomyolysis
Young Shin Lim, Heeyeon Cho, Sang Taek Lee, Yeonhee Lee
Clin Exp Pediatr. 2018;61(3):95-100.   Published online March 19, 2018
Purpose

This study aimed to evaluate the clinical findings in pediatric rhabdomyolysis and the predictive factors for acute kidney injury (AKI) in Korean children.

Methods

Medical records of 39 Korean children, who were newly diagnosed with rhabdomyolysis from January 2008 to December 2015, were retrospectively analyzed. The diagnosis was made from the medical history, elevated serum creatinine kinase level >1,000 IU/L, and plasma...