- Review Article
- Critical Care Medicine
- Ferritin in pediatric critical illness: a scoping review
- Ivy Cerelia Valerie, Anak Agung Sagung Mirah Prabandari, Dyah Kanya Wati
- Clin Exp Pediatr. 2023;66(3):98-109. Published online September 16, 2022
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The number of studies on ferritin predictive ability in pediatric critical illness has grown exponentially over the past 2 decades. However, among the 66 of 1,580 studies analyzed here, summary statistics for overall and condition-specific studies were only reported in 45.4% and 71.2%, respectively. In contrast, ferritin as a categorical variable with a preset threshold was a significant predictor in 84.6% of studies.
- Neurology
- Pediatric syncope: pearls and pitfalls in history taking
- Jung Sook Yeom, Hyang-Ok Woo
- Clin Exp Pediatr. 2023;66(3):88-97. Published online February 15, 2023
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An accurate diagnosis depends on correct history taking and its interpretation. An in-depth understanding of the symptoms of syncope in connection with its pathophysiology can lead to avoiding critical pitfalls in the diagnostic process of history taking.
- Letter to the Editor
- Critical Care Medicine
- Role of serum bilirubin-to-albumin ratio as a prognostic index in critically ill children
- You Min Kang, Ga Eun Kim, Mireu Park, Jong Deok Kim, Min Jung Kim, Yoon Hee Kim, Kyung Won Kim, Myung Hyun Son, Soo Yeon Kim
- Clin Exp Pediatr. 2023;66(2):85-87. Published online December 5, 2022
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- Clinical Note
- Rheumatology
- Haploinsufficiency A20 misdiagnosed as PFAPA (periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis) syndrome with Kikuchi disease
- Kyo Jin Jo, Su Eun Park, Chong Kun Cheon, Seung Hwan Oh, Seong Heon Kim
- Clin Exp Pediatr. 2023;66(2):82-84. Published online June 22, 2022
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- Original Article
- Gastroenterology
- Association between maternal weight gain during pregnancy and child’s body mass index at preschool age
- Jeewon Shin, Yoowon Kwon, Ju Hee Kim, Su Jin Jeong
- Clin Exp Pediatr. 2023;66(2):76-81. Published online November 30, 2022
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Question: What are the risk factors of newborn birth weight? Does gestational weight gain and prepregnancy body mass index affect childhood weight?
Finding: Excess maternal weight gain increases the risk of overweight/obesity, newborn birth weight, and child body mass index at 4–6 years.
Meaning: Maternal weight control before and during pregnancy should be well controlled.
- Neurobehavior
- Association between previous abortion history and risk of autism spectrum disorders among offspring: a meta-analysis
- Ensiyeh Jenabi, Erfan Ayubi, Saeid Bashirian, Mahdieh Seyedi, Mohammad Rezaei
- Clin Exp Pediatr. 2023;66(2):70-75. Published online August 17, 2022
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Question: This study aimed to determine whether there is an association between previous abortion history and the risk of autism spectrum disorders (ASDs) among children.
Finding: We found that the risk of ASD associated with previous abortion history had an odds ratio of 1.64 (95% confidence interval, 1.28–2.0; I2=61.7%).
Meaning: These findings suggest a positive and significant association between history of previous abortion and risk of ASD in children.
- Editorial
- Neurology
- Lumbar puncture or not: when does febrile seizure require a neurodiagnostic evaluation?
- Seung Soo Kim
- Clin Exp Pediatr. 2023;66(2):68-69. Published online December 9, 2022
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· A neurodiagnostic evaluation (lumbar puncture, blood tests, electroencephalography, and neuroimaging) is not indicated in most patients with simple febrile seizures.
· A lumbar puncture is indicated when a central nervous system infection is suspected in any patient with febrile seizures.
· Blood tests (glucose, electrolytes, and complete blood count) are indicated in patients with persistent seizure after benzodiazepine treatment, prolonged loss of consciousness, poor general condition, or signs of dehydration.
- Emergency Medicine
- Current diagnosis and image-guided reduction for intussusception in children: teamwork approach
- Ji-Hyun Seo
- Clin Exp Pediatr. 2023;66(2):66-67. Published online September 1, 2022
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· The successful and safe enema reduction of intussusception depends primarily on the experience and preference of the radiologists and the availability of resources.
· The establishment of a standardized manual or protocol for reduction and pre-reduction treatment of intussusception, along with the collaboration of pediatricians, radiologists, and surgeons, is expected to improve the treatment success rate.
- Review Article
- Nutrition
- Total energy expenditure measured by doubly labeled water method in children and adolescents: a systematic review
- Nahyun Kim, Jonghoon Park
- Clin Exp Pediatr. 2023;66(2):54-65. Published online October 17, 2022
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This systematic review summarizes convincing evidence that total energy expenditure (TEE) measured using the doubly labeled water technique increased with age from 1 to 18 years, while fat-free mass (FFM) increased with growth. TEE and in normal-weight participants, while physical activity level did not differ from that of normal-weight participants.
- Infection
- Pathogenetic and etiologic considerations of febrile seizures
- Ji Yoon Han, Seung Beom Han
- Clin Exp Pediatr. 2023;66(2):46-53. Published online January 13, 2023
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· Inflammatory responses accompanying fever increase neuronal excitability in the central nervous system, which in turn provokes seizures.
· Fever in children with febrile seizures is usually caused by common respiratory viruses, the distributions of which match those of seasonal community-acquired respiratory tract infections.
· Several genetic variations in ion channels seem associated with neuronal hyperexcitability in children with febrile seizures.
- Original Article
- Neurology
- Long-term neurological cognitive, behavioral, functional, and quality of life outcomes after fetal myelomeningocele closure: a systematic review
- Andre Marolop Pangihutan Siahaan, Martin Susanto, Sarma Nursani Lumbanraja, Dwi Herawati Ritonga
- Clin Exp Pediatr. 2023;66(1):38-45. Published online November 30, 2022
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· Fetal myelomeningocele closure significantly improved long-term neurological cognitive, behavioral, functional, and quality of life outcomes, most likely by reducing hydrocephalus rates.
· However, fetal myelomeningocele closure is associated with a significant risk of pregnancy complications, especially premature rupture of membranes and preterm delivery.
- Neonatology (Perinatology)
- A thickened formula reduces feeding-associated oxygen desaturation and bradycardia in preterm infants
- Gayoung Lee, Juyoung Lee, Ga Won Jeon, Yong Hoon Jun
- Clin Exp Pediatr. 2023;66(1):32-37. Published online December 15, 2022
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Question: Is a commercial thickened formula able to alleviate oral feeding-associated desaturation and bradycardia in preterm infants?
Finding: Thickened formula feeding significantly reduced oral feeding-associated desaturation and bradycardia in preterm infants.
Meaning: Thickened formula feeding stabilizes oxygen saturation and heart rate during oral feeding among preterm infants with feeding difficulties.
- Nutrition
- Not breastfeeding and risk of autism spectrum disorders among children: a meta-analysis
- Ensiyeh Jenabi, Saeid Bashirian, Amir Mohammad Salehi, Salman Khazaei
- Clin Exp Pediatr. 2023;66(1):28-31. Published online July 19, 2022
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This study aimed to determine whether there is an association between not breastfeeding (versus breastfeeding) and the risk of autism spectrum disorders (ASD) among children. We found that the risk of ASD associated with not breastfeeding had an odds ratio of 1.81 (95% confidence interval, 1.35–2.27; I2=0 %). These findings suggest the importance of breastfeeding in decreasing the risk of ASD among children.
- Editorial
- Pulmonology
- Wheezing in infants and preschoolers: phenotypes and treatment options
- Jung Yeon Shim
- Clin Exp Pediatr. 2023;66(1):26-27. Published online December 6, 2022
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· Knowing who will develop into asthma or who will not is important to impose proper treatment and early intervention in a child with the first episode of wheezing.
· Phenotypes of severe bronchiolitis in less than 2-year-old children with first episode of wheezing were suggested for different treatment options
· RV-induced and/or atopy-associated severe wheezing in preschool children may benefit from early intervention of asthma treatment.
- Neonatology (Perinatology)
- Does cord blood cortisol have a mediating effect on maternal prepregnancy body mass index and birth weight?
- Gyu Hong Shim
- Clin Exp Pediatr. 2023;66(1):24-25. Published online November 30, 2022
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· A high prepregnancy body mass index (pre-BMI) is associated with large for gestational age (LGA) and macrosomia, whereas a low pre-BMI is associated with small for gestational age (SGA) and low birth weight (LBW).
· The identification of the role of the hypothalamus-pituitary-adrenal axis in the effect of pre-BMI and maternal gestational weight gain on birth weight could reduce the frequency of LGA, macrosomia, SGA, or LBW through maternal diet optimization.
- Pulmonology
- Community-acquired pneumonia in Korean children: time to read between the lines
- Dong In Suh
- Clin Exp Pediatr. 2023;66(1):22-23. Published online November 10, 2022
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· Various studies have reported the etiology of community-acquired pneumonia (CAP) in Korean children
· Factors other than etiology are equally important to a compre hensive understanding of CAP
· Knowledge from archived reports is no longer directly applicable to the current CAP and requires careful modification
- Review Article
- Gastroenterology
- Current diagnosis and image-guided reduction for intussusception in children
- Jisun Hwang, Hee Mang Yoon, Pyeong Hwa Kim, Ah Young Jung, Jin Seong Lee, Young Ah Cho
- Clin Exp Pediatr. 2023;66(1):12-21. Published online July 4, 2022
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· Intussusception, the most common cause of small bowel obstruction in young children, has an overall incidence in Korea of 28.3 cases per 100,000 person-years.
· Its cause is idiopathic inmost cases, although viral or bacterial gastroenteritis has beenpostulated as a cause. Approximately 4% of children have pathological lead points for intussusception, and Meckel’s diverticulum is the most common cause.
· Intussusception in preterm infants is extremely rare. Older children (>5 years of age) are at increased risk of pathological lead points.
- Cardiology
- Research trends on causes of Kawasaki disease in the COVID-19 era: focus on viral infections
- Young Hwan Lee
- Clin Exp Pediatr. 2023;66(1):1-11. Published online June 22, 2022
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· The etiology of Kawasaki disease (KD) is unclear, but its clinical, epidemiological, and pathophysiological characteristics are strongly associated with infectious diseases.
· In the coronavirus disease 2019 pandemic era, viruses are attracting the most attention. Sudden acute respiratory syndrome coronavirus 2 infection causes various hyperinflammation in children that require differentiation from KD.
· Immune responses in patients with KD may be induced by host cell damage. To effectively prevent and treat KD, the genetic background and immune responses of KD patients and triggering pathogens require identification.
- Clinical Note
- Endocrinology
- Graves’ disease: an uncommon cause of late sequelae following DRESS (drug reaction with eosinophilia and systemic symptoms)
- Therdpong Tempark, Amatanun Tangthanapalakul, Tawatchai Deekajorndech, Susheera Chatproedprai, Vichit Supornsilchai, Siriwan Wananukul
- Clin Exp Pediatr. 2022;65(12):602-604. Published online June 22, 2022
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- Original Article
- Pulmonology
- Predictors of high-flow nasal cannula failure in pediatric patients with acute respiratory distress
- Kantara Saelim, Busawan Thirapaleka, Kanokpan Ruangnapa, Pharsai Prasertsan, Wanaporn Anuntaseree
- Clin Exp Pediatr. 2022;65(12):595-601. Published online November 1, 2022
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SpO2/FiO2 ratio ≤166, pediatric respiratory rate-oxygenation index <132, and clinical respiratory score ≥6 at 12 hours after high-flow nasal cannula (HFNC) initiation were useful bedside predictors for HFNC failure in pediatric patients.
- Gastroenterology
- Ability of polymicrobial probiotic and mono-strain probiotic to reduce functional abdominal pain in children: a randomized clinical trial
- Seyed Sajad Jafari, Seyed Mojtaba Hashemi, Bahman Sadeghi, Amir Almasi-Hashiani
- Clin Exp Pediatr. 2022;65(12):589-594. Published online October 31, 2022
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· This study compared the ability of 2 probiotics to reduce and improve functional abdominal pain (FAP) in children.
· In the polymicrobial probiotic (PMP) group, 10.34% of children reported no pain; in the mono-strain probiotic (MSP) group, all patients reported low-degree pain. The mean pain score decreased significantly over time in both groups.
· The use of both PMP and MSP is recommended to reduce pain in patients with FAP.
- Editorial
- Allergy
- Clinical considerations and practical issues of allergic diseases in COVID-19 era
- Sungsu Jung
- Clin Exp Pediatr. 2022;65(12):587-588. Published online November 29, 2022
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The risk of sudden acute respiratory syndrome coronavirus 2 infection and severe coronavirus disease 2019 (COVID-19) outcomes is not elevated in patients with the type 2 phenotype and well-controlled asthma. Inhaled corticosteroids, intranasal corticosteroids, and topical steroids can be safely used in COVID-19 patients. Biologics can be safely used by patients with allergic diseases without concern about antibody responses.
- Gastroenterology
- Ability of probiotics to reduce functional abdominal pain in children
- Ji Sook Park
- Clin Exp Pediatr. 2022;65(12):585-586. Published online October 6, 2022
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· The ability of probiotics to relieve pain caused by functional abdominal pain disorders (FAPD) in children is unclear.
· Lactobacillus reuteri may effectively reduce pain caused by childhood FAPD.
· Since the routine use of probiotics cannot be recommended due to a lack of clinical evidence, research into probiotic mixtures or symbiotics remains necessary.
- Review Article
- Allergy
- Diagnosis and management of asthma in infants and preschoolers
- Hai Lee Chung
- Clin Exp Pediatr. 2022;65(12):574-584. Published online April 19, 2022
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· Asthma in infants and preschoolers involves heterogeneous phenotypes.
· Asthma diagnosis is based on symptom patterns, therapeutic responses, and the presence of risk factors with careful consideration of differential diagnosis.
· Daily inhaled corticosteroid therapy remains the most effective strategy for managing persistent asthma symptoms irrespective of phenotype.
· Future research, including genetic and molecular studies, is needed to develop a clear definition of asthma and personalized therapeutic approaches.
- Pulmonology
- Epidemiology and surveillance implications of community-acquired pneumonia in children
- Eui Jeong Roh, Jung Yeon Shim, Eun Hee Chung
- Clin Exp Pediatr. 2022;65(12):563-573. Published online October 17, 2022
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The identification of the causative pathogens of community-acquired pneumonia and appropriate treatment and prevention can reduce mortality and the socioeconomic burden by reducing the medical expenses. The world has been in the coronavirus disease 2019 pandemic since 2020, and there is always a risk of continuous emergence and epidemic of new respiratory infectious diseases. Therefore, it is important to sustain a monitoring system for respiratory infectious diseases including pneumonia.
- Infection
- Global varicella vaccination programs
- Young Hwa Lee, Young June Choe, Jia Lee, Eunseong Kim, Jae Young Lee, Kwan Hong, Yoonsun Yoon, Yun-Kyung Kim
- Clin Exp Pediatr. 2022;65(12):555-562. Published online November 2, 2022
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It is important to evaluate its effectiveness at the national level and to determine the varicella vaccine schedule based on the evidence generated through the studies.
- Original Article
- Gastroenterology
- Probiotics added to maternal nutrition affect ınfantile colic symptoms and fecal microbiota profile: a single-blind randomized controlled study
- Aysu Yıldız Karaahmet, Gülümser Dolgun, Metehan Özen
- Clin Exp Pediatr. 2022;65(11):547-554. Published online September 23, 2022
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Question: Do probiotics added to maternal nutrition affect infantile colic symptoms and intestinal microbiota?
Finding: Infants whose mothers ingested probiotics demonstrated decreased crying frequency and intensity and significantly increased bacterial diversity in the stools. The bacterial variety was substantially affected by the added probiotic product.
Meaning: The addition of probiotics to maternal nutrition in early infancy could play an important role in preventing infantile colic.
- Nutrition
- Survey of Korean pediatrician’s perceptions of barriers to and improvements in breastfeeding
- Seong Phil Bae, Woo Ryoung Lee, Won-Ho Hahn, Hye-Jung Shin, Young Min Ahn, Son Moon Shin, Yong Joo Kim, Ellen Ai-Rhan Kim, Youn Jeong Shin, Dae Yong Yi, Soon Min Lee, Juyoung Lee, Jin A Lee, Sung-Hoon Chung, Euiseok Jung, Eui Kyung Choi, Ju Sun Heo
- Clin Exp Pediatr. 2022;65(11):540-546. Published online July 29, 2022
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Question: What barriers to breastfeeding do Korean pediatricians perceive?
Finding: Regardless of medical institution, breastfeeding counseling for parents is currently limited, and breastfeeding is commonly discontinued due to various maternal and neonatal factors.
Meaning: To promote breastfeeding, increasing pediatrician participation in breastfeeding counseling with the establishment of appropriate breastfeeding counseling fees and the expansion of practical and high-quality breastfeeding education for medical staff should be considered.
- Editorial
- Cardiology
- Recent research trends in Kawasaki disease-related infection
- Hyang-Ok Woo
- Clin Exp Pediatr. 2022;65(11):538-539. Published online July 22, 2022
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The incidence of Kawasaki disease has reportedly decreased since the coronavirus disease 2019 (COVID-19) quarantine. However, multisystem inflammatory syndrome in children has reportedly occurred more frequently in areas where COVID-19 was prevalent than in previous years. Research into the etiology of childhood and adolescent systemic vasculitis in infection-related immune responses during the COVID-19 pandemic has increased accordingly.
- Neurology
- Increasing our understanding of rotavirus-induced central nervous system manifestations
- Jon Soo Kim
- Clin Exp Pediatr. 2022;65(11):536-537. Published online May 6, 2022
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· Diverse clinicoradiological features of central nervous system (CNS) complications in rotavirus infection can be identified with the rapid and wide use of various brain magnetic resonance imaging protocols.
· An increased understanding of the various pathophysiological mechanisms of rotavirus-induced CNS manifestations will enable precise management in the future.






