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"Most viewed" Articles are from the articles published in 2023 during the last six month.

Editorial
Neonatology (Perinatology)
The predetermined future: tackling South Korea’s total fertility rate crisis   (1,845 times)
Jin Kyu Kim
Clin Exp Pediatr. 2025;68(3):225-227.   Published online November 6, 2024
· South Korea faces a severe demographic crisis with the lowest global fertility rate. Despite significant investments, the total fertility rate continues to decline.
· It is necessary to fully mobilize national capabilities and execute comprehensive strategies that focus on both intangible and tangible values.
· Immediate and decisive action is essential to addressing these challenges effectively.
Original Article
Gastroenterology
Relationship between nonalcoholic fatty liver disease and hyperandrogenemia in adolescents with polycystic ovary syndrome   (1,823 times)
Ozlem Kara, Hanife Aysegul Arsoy, Murat Keskin
Clin Exp Pediatr. 2023;66(9):395-402.   Published online June 14, 2023
Question: Is polycystic ovary syndrome (PCOS) a risk factor for nonalcoholic fatty liver disease (NAFLD) in adolescents?
Finding: The frequency of NAFLD did not increase in adolescents with PCOS. However, hyperandrogenemia was a risk factor for NAFLD.
Meaning: Adolescents with PCOS and hyperandrogenemia should be closely monitored for hepatic steatosis.
Review Article
Nephrology (Genitourinary)
Kidney complications associated with COVID-19 infection and vaccination in children and adolescents: a brief review   (1,819 times)
Hee Sun Baek, Min Hyun Cho
Clin Exp Pediatr. 2023;66(10):424-431.   Published online June 28, 2023
Several observational studies have shown that acute kidney injury affects up to 46% of children and adolescents who develop severe postinflammatory responses, such as multisystem inflammatory syndrome in childhood, due to coronavirus disease 2019 (COVID-19). Although causality has not been established, some cases of glomerulopathy or nephrotic syndrome occurring after COVID-19 infection or vaccination have been reported. Therefore, kidney complications associated with these conditions in children and adolescents warrant attention.
Original Article
Nutrition
Differential effects of dietary and physical activity interventions on adiposity of children with obesity   (1,815 times)
Anekchoke Tangtongsoong, Chonnikant Visuthranukul, Yuda Chongpison, Sirinuch Chomtho
Clin Exp Pediatr. 2025;68(5):370-378.   Published online February 3, 2025
Question: How do dietary intake and physical activity affect body mass index (BMI) z scores and adiposity among children with obesity?
Finding: Higher dietary protein and fiber intakes were significantly associated with a decrease in BMI z scores and adiposity among children with obesity.
Meaning: Optimizing dietary interventions by focusing on protein and fiber intakes could be an effective strategy for managing childhood obesity.
Review Article
Neonatology (Perinatology)
Influence of infant microbiome on health and development   (1,803 times)
Noelle Younge
Clin Exp Pediatr. 2024;67(5):224-231.   Published online August 21, 2023
· The infant gut microbiome is highly dynamic and individualized.
· Microbes are vertically transmitted from mother to infant during delivery and throughout infancy.
· Delivery mode, gestational age, diet, and antibiotic use influence infant microbiome composition and function.
· In animal studies, the microbiome played critical roles in the structural and functional development of the infant gastrointestinal and immune systems.
· Microbiome-targeted therapies have great potential to reduce infant morbidity and mortality.
Clinical Note
Immunology
Comparative analysis of rare periodic fever syndromes including the first Korean case of hyperimmunoglobulinemia D and periodic fever syndrome   (1,787 times)
Yoonsun Yoon, Hyun Seo Kim, Jung Ok Shim, JungHwa Lee
Clin Exp Pediatr. 2024;67(10):550-552.   Published online September 24, 2024
Review Article
Cardiology
Lifelong impact of elevated blood pressure from childhood to adulthood   (1,763 times)
Junhyun Kwon, Eunji Kim
Clin Exp Pediatr. 2025;68(4):278-286.   Published online November 28, 2024
· Childhood blood pressure (BP) is significantly associated with adult hypertension and cardiovascular disease.
· Despite ongoing debate regarding the need for regular BP screening and early pharmacotherapy in children, the benefits of optimizing BP throughout childhood are clear.
· Childhood presents a critical window for normalizing BP through lifestyle modifications such as reducing sodium intake and increasing physical activity to promote lifelong cardiovascular health and prevent longterm complications.
Nutrition
Protein substitutions as new-generation pharmanutrition approach to managing phenylketonuria   (1,735 times)
Fatma Nur Keskin, Teslime Özge Şahin, Raffaele Capasso, Duygu Ağagündüz
Clin Exp Pediatr. 2023;66(8):320-331.   Published online November 1, 2022
Phenylketonuria, an autosomal recessive disease that results from the inability to metabolize phenylalanine, is currently treated with medical nutrition therapy. New treatment approaches such as tetrahydrobiopterin, glycomacropeptide, large neutral amino acids, pegvaliase, and gene therapy significantly impact disease management and dietary enrichment. This article also reviews animal and human studies that have evaluated the efficacy and safety of these new protein substitutes.
Original Article
Cardiology
Effect of face mask on pulmonary artery pressure during echocardiography in children and adolescents   (1,735 times)
Alireza Ahmadi, Mohammad Reza Sabri, Zohreh Sadat Navabi
Clin Exp Pediatr. 2024;67(3):161-167.   Published online January 23, 2024
Question: Can face masks alter pulmonary pressure in children and adolescents with and without congenital heart disease?
Findings: Mask removal during echocardiography (ECHO) reduced pulmonary pressure.
Meaning: These findings suggest that face masks should be removed during ECHO in children and adolescents.
Review Article
General Pediatrics
Protecting our future: environmental hazards and children’s health in the face of environmental threats: a comprehensive overview   (1,734 times)
Jungha Lee, Hyo-Bin Kim, Hun-Jong Jung, Myunghee Chung, So Eun Park, Kon-Hee Lee, Won Seop Kim, Jin-Hwa Moon, Jung Won Lee, Jae Won Shim, Sang Soo Lee, Yunkoo Kang, Young Yoo; The Environmental Health Committee of the Korean Pediatric Society
Clin Exp Pediatr. 2024;67(11):589-598.   Published online October 31, 2024
· Exposure to air pollutants cause allergic and respiratory diseases as well as chronic kidney disease.
· Adequate physical activity and proper nutrition are essential for children to maintain good health.
· We must educate people about the harmful effects of noise, blue light, heavy metals and smoke.
· Government and society must actively decrease environ-mental hazards.
Original Article
Genetics and Metabolism
Long-term follow-up of neurocognitive function in patients with citrin deficiency and cholestasis   (1,718 times)
Meng-Ju Melody Tsai, Jung-Chi Chang, Heng-Yu Lu, Susan Shur-Fen Gau, Yin-Hsiu Chien, Wuh-Liang Hwu, Yen-Hsuan Ni, Huey-Ling Chen, Ni-Chung Lee
Clin Exp Pediatr. 2025;68(3):257-265.   Published online November 28, 2024
Question: Do transient metabolic disturbances in early childhood due to citrin deficiency have lasting effects on neurocognitive function?
Finding: Children with citrin deficiency have a higher prevalence of ADHD compared to the general population, with elevated ammonia levels in infancy associated with increased hyperactivity-impulsivity risk.
Meaning: Metabolic disturbances in early childhood due to citrin deficiency may contribute to long-term neurocognitive impacts, particularly ADHD, while IQ and life outcomes generally remain normal.
Review Article
Neonatology (Perinatology)
Recent advances in understanding pathophysiology of non-nutritional stunting in very preterm infants   (1,715 times)
Eduardo Cuestas, Alina Rizzotti
Clin Exp Pediatr. 2025;68(4):287-297.   Published online December 23, 2024
· Previous reviews of extrauterine growth restriction focused mainly on weight growth restriction caused by nutritional factors or pathological conditions.
· This review summarizes recent developments in the pathophysiology of nonnutritional length growth restriction in very preterm infants with focus on the impact of sustained neonatal inflammation on their short- and long-term outcomes.
· Further research is needed to investigate optimal strategies to improve length growth restriction in very preterm infants.
Immunology
Systemic autoinflammatory disorders   (1,710 times)
Dae Chul Jeong
Clin Exp Pediatr. 2023;66(10):432-438.   Published online June 14, 2023
· Systemic autoinflammatory disorders (SAID) are disorders caused by dysregulation of the innate immunity with genetic background, leading to recurrent episodes of systemic inflammation.
· SAID is characterized by recurrent acute inflammatory responses including fever or skin manifestations, unrelated with infection or malignancy.
· Diagnosis is based on family and long-term history with detailed clinical and laboratory manifestations during febrile periods.
Original Article
Gastroenterology
Inferior vena cava to aorta ratio in dehydrated pediatric patients: a systematic review and meta-analysis   (1,692 times)
Gilbert Sterling Octavius, Michelle Imanuelly, Johan Wibowo, Nadia Khoirunnisa Heryadi, Melanie Widjaja
Clin Exp Pediatr. 2023;66(11):477-484.   Published online June 14, 2023
Question: The inferior vena cava to aorta (IVC/Ao) ratio measured via ultrasound has been touted as a promising noninvasive technique to assess clinically significant dehydration in pediatric patients.
Finding: Our meta-analysis found that IVC/Ao ratio had a positive likelihood ratio of 3.2 (95% confidence interval [CI], 2.1–5.1) and negative likelihood ratio of 0.18 (95% CI, 0.12–0.28).
Meaning: Hence, IVC/Ao ratio is insufficient to exclude or confirm significant dehydration in pediatric patients.
Neonatology (Perinatology)
Short-term outcomes of oropharyngeal administration of colostrum in preterm neonates: a double-blind placebocontrolled randomized trial   (1,690 times)
Ameneh Lamsehchi, Maryam Shokouhi Solgi, Mohammad Kazem Sabzehei, Behnaz Basiri, Elahe Talebi Ghane, Kiana Kimiaei Asadi, Sina Azadnajafabad
Clin Exp Pediatr. 2025;68(1):73-79.   Published online October 31, 2024
Question: What are the short-term outcomes of oropharyngeal administration of colostrum (OAC) in preterm neonates?
Finding: This study demonstrated the significantly lower rates of necrotizing enterocolitis, clinically suspected sepsis, shorter hospital stay, period to full enteral feeding, and antibiotic therapy period in the OAC group.
Meaning: This trial may further expand the clinical application of OAC in premature infants to reduce their length of hospital stay and complications.
Developmental and Behavioral Medicine
Neonatal risk factors associated with autism spectrum disorders: an umbrella review   (1,689 times)
Amir Mohammad Salehi, Erfan Ayubi, Salman Khazaei, Ensiyeh Jenabi, Saeid Bashirian, Zohreh Salimi
Clin Exp Pediatr. 2024;67(9):459-464.   Published online July 19, 2024
Question: What are the neonatal risk factors for autism spectrum disorder (ASD)?
Findings: Significant effect sizes were observed for congenital heart disease (odds ratio [OR], 1.35), macrosomia (OR, 1.11), low birth weight (OR, 1.63), very low birth weight (OR, 2.25), small for gestational age (OR, 1.17), jaundice (OR, 1.74), male sex (OR, 1.47), and Apgar score (OR, 1.40).
Meaning: These factors were identified as risk factors for ASD.
Perspective
Other
New public-centered child protection system in Korea   (1,686 times)
We Sun Shim
Clin Exp Pediatr. 2023;66(5):179-181.   Published online April 18, 2023
Korea’s child abuse response system was transformed under policy change in April 2020, from what was previously operated on a private-centered basis to a focus on the public sector with expanded role of local governments. Promising outcomes are expected with new system as greater governmental intervention will effectively protect at-risk children with acceleration in institutional collaboration and expertise in information management and administration.
Original Article
Allergy
Association between dyslipidemia and asthma in children: a systematic review and multicenter cohort study using a common data model   (1,645 times)
Ji Eun Lim, Hye Min Kim, Ju Hee Kim, Hey Sung Baek, Man Yong Han
Clin Exp Pediatr. 2023;66(8):357-365.   Published online June 14, 2023
Question: Is dyslipidemia a risk factor for asthma in children?
Finding: This was a comprehensive systematic review and retrospective multicenter study of the association between dyslipidemia and asthma in children. In a multicenter cohort analysis using the Observational Medical Outcomes Partnership Common Data Model, elevated total cholesterol levels were associated with increased risk of asthma development.
Meaning: These findings suggest an association between dyslipidemia and asthma in children.
Endocrinology
Prednisolone impairs trabecular bone score changes in adolescents with 21-hydroxylase deficiency   (1,645 times)
Pattara Wiromrat, Yutapong Raruenrom, Phanpaphorn Namphaisan, Nantaporn Wongsurawat, Ouyporn Panamonta, Chatlert Pongchaiyakul
Clin Exp Pediatr. 2025;68(3):238-246.   Published online November 13, 2024
Question: What is the prevalence of an impaired trabecular bone score (TBS), a measure of bone microarchitecture, in adolescents with 21-hydroxylase deficiency (21OHD)? Do prednisolone and hydrocortisone affect TBS differently in this patient population?
Finding: Impaired TBS was observed in 18% of participants. Prednisolone use negatively impacted TBS change.
Meaning: Impaired TBS is prevalent among adolescents with 21OHD. Prednisolone impairs trabecular bone microarchitecture development.
Hematology
Impact of Xmn1 polymorphism on hydroxyurea therapy in children with HbE-β non-transfusion dependent thalassemia: a cohort study   (1,643 times)
Saheli Roy, Paramita Bhattacharya, Atanu Kumar Dutta, Mrinal Kanti Das
Clin Exp Pediatr. 2025;68(6):437-444.   Published online February 3, 2025
Question: Does the T allele of Xmn1 polymorphism favorably influence hydroxyurea efficacy in children of Eastern descent with fetal hemoglobin (HbE)-β nontransfusion dependent thalassemia (NTDT)?
Finding: Decrease in transfusion requirement and increase in height following hydroxyurea therapy was noted in both groups, however, change in CT was more critical than that in CC genotype.
Meaning: T allele of Xmn1 polymorphism favorably influences hydroxyurea efficacy in children with HbE-β NTDT.
Infection
Clinical characteristics and associated factors of pediatric acute necrotizing encephalopathy: a retrospective study   (1,640 times)
Huiling Zhang, Yilong Wang, Qianyun Ding, Xuekun Li, Sheng Ye
Clin Exp Pediatr. 2025;68(2):153-162.   Published online November 11, 2024
· The mortality rate of acute necrotizing encephalopathy was high.
· Laboratory tests revealed that the fatal group had higher creatinine, lactate, activated partial thromboplastin time, thrombin time, interleukin (IL)-6, IL-10, creatine kinase, and D-dimer than survivors.
· The fatal group displayed lower Glasgow Coma Scale scores and arterial pH.
Neurology
Evaluation of pediatric migraine triggers: a single-center study   (1,621 times)
Hey-Joon Son, Joo-Ok Jin, Kon-Hee Lee
Clin Exp Pediatr. 2025;68(2):163-169.   Published online November 11, 2024
Question: What are the primary triggers for pediatric migraines, and how do they impact clinical management?
Finding: Common triggers for pediatric migraines include sleep disturbances, academic stress, and motion sickness, with academic stress identified as the most intense.
Meaning: Recognizing and addressing specific triggers like sleep disturbance and academic stress is crucial to effectively managing pediatric migraines with emphasis on personalized care to improve outcomes.
Review Article
Gastroenterology
Role of social media use in onset of functional gastrointestinal disorders in children   (1,620 times)
Mauro Cinquetti, Vanessa Dargenio, Michele Fingerle, Carolina Marchiotto, Marco Biasin, Massimo Pettoello Mantovani, Flavia Indrio
Clin Exp Pediatr. 2023;66(6):226-232.   Published online December 21, 2022
· Social media use can cause adverse health outcomes, including gastrointestinal disorders, in children and adolescents.
· Recent findings have shown a high prevalence of social media use and decreased well-being in patients with functional gastrointestinal disorders.
· The biopsychosocial nature of functional gastrointestinal disorders and the clear influence of social media on the psychosocial lives of children suggests the likely involvement of social media in their development.
Allergy
Recent topics on gastrointestinal allergic disorders   (1,611 times)
Yoshiyuki Yamada
Clin Exp Pediatr. 2023;66(6):240-249.   Published online January 9, 2023
Gastrointestinal (GI) allergies are divided into immunoglobulin E (IgE)-mediated, non-IgE-mediated, and mixed types. In addition to non-IgE-mediated, overlapping eosinophilic GI disorders (EGIDs) have increased in Japan. EGIDs, a mixed-type allergy category, include eosinophilic esophagitis (EoE) and non-EoE EGIDs. The number of EoE cases has increased in Western countries, followed by Asian countries. Recent GI allergies may also be associated with type 2 inflammation.
Other
MicroRNAs as novel biomarkers for the diagnosis and treatment of pediatric diseases   (1,595 times)
Hwal Rim Jeong, Il Tae Hwang
Clin Exp Pediatr. 2024;67(3):119-125.   Published online May 24, 2023
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression post transcriptionally, and MiRNA expression levels vary with developmental stages. MiRNAs play an important role in several biological processes in children, including growth, neuro-development, inflammation, and tumor formation. Research on miRNAs may uncover the molecular mechanisms underlying various pediatric diseases, leading to the development of novel biomarkers that aid in the diagnosis, treatment, and prognosis of these diseases.
Original Article
General Pediatrics
Effect of online infant care training and postpartum counseling based on Meleis' transition theory on mothers' readiness for care and breastfeeding: a randomized controlled trial   (1,595 times)
Fatma Şule Bilgiç, Gülçin Bozkurt
Clin Exp Pediatr. 2024;67(10):521-530.   Published online September 27, 2024
Question: Do interventions based on Meleis' transition theory affect mothers' readiness for baby care and breastfeeding?
Findings: We found a statistically significant difference between the intervention and control groups in mothers' readiness for newborn care and breastfeeding (P<0.001).
Meaning: This intervention increased breastfeeding rates while ensuring that mothers were ready to care for their babies and prepared for the role of motherhood.
Perspective
Other
Telemedicine in pediatrics: things to consider   (1,590 times)
Sandhya J. Kadam, Archana Reddy Bongurala
Clin Exp Pediatr. 2025;68(4):326-328.   Published online February 3, 2025
This article highlights the benefits, challenges, and current significance of telemedicine. Future research is needed, primarily to address the challenges of optimizing the implementation of telehealth. To use telemedicine effectively and efficiently for the timely diagnosis and management of patients, an evaluation of current telemedicine practice is needed. Analysis of shortcomings and advantages can help enhance healthcare delivery to pediatric patients, making it more accessible for future use.
Original Article
General Pediatrics
The role of serum zinc and selenium levels in etiology of febrile seizures   (1,587 times)
Yavuz Ataş, Hatice Gamze Poyrazoğlu
Clin Exp Pediatr. 2025;68(5):388-394.   Published online January 13, 2025
Zinc may play a key role in preventing febrile seizures by increasing the seizure threshold and reducing oxidative stress. Incorporating zinc supplements into treatment could help protect children from the adverse effects of febrile seizures and improve their overall outcomes.
Infection
Enteric pathogens implicated in acute infectious diarrhea among young children in resource-limited region with rapidly growing population: a hospital-based cross-sectional study   (1,583 times)
Aseel Mahmood Ibrahim Al-Mashahedah, Randa Mohammed Dhahi
Clin Exp Pediatr. 2025;68(5):379-387.   Published online December 23, 2024
Question: What are the most common enteric pathogens in acute diarrhea among children younger than 5 years of age, and which age group is most susceptible?
Finding: Bacteria were the most common causative microorganisms of diarrhea, followed by viruses, parasites, and fungi. The 1–2-year age group was the most commonly affected.
Meaning: There is a need to formulate preventive strategies targeting children exposed to enteric pathogens to limit diarrhea.
Editorial
Hematology
Absolute versus functional iron deficiency   (1,582 times)
Hye Lim Jung
Clin Exp Pediatr. 2025;68(2):138-140.   Published online November 13, 2024
· Iron deficiency (ID), the most common cause of anemia, can be classified into absolute and functional types. Absolute ID is a state of low total body iron, while functional ID is a state of imbalance between iron demand and iron availability due to inflammation and/or infection.
· ID is diagnosed by serum ferritin and transferrin saturation levels.


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