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Editorial
Pulmonology
Influence of coronavirus disease 2019 pandemic on respiratory health in children
Hyo-Bin Kim
Clin Exp Pediatr. 2022;65(7):348-349.   Published online May 3, 2022
· Practicing hand hygiene, wearing a mask, maintaining social distancing, and other lockdown measures were implemented to reduce the spread of coronavirus disease 2019 (COVID-19), a worldwide disaster that started in 2019.
· The advent of the worldwide COVID-19 pandemic resulted in positive secondary effects, such as reduced respiratory viral infections in children and decreased degrees of air pollution.
Neonatology (Perinatology)
Ideal timing for aggressive screening to detect developmental dysplasia of the hip in term and preterm infants
Won-Ho Hahn
Clin Exp Pediatr. 2022;65(7):346-347.   Published online March 14, 2022
The risk factors and pathogenesis of developmental dysplasia of the hip (DDH) are unclear. Moreover, no universal screening method can entirely eliminate the risk of DDH. However, its incidence is significant and its early detection is critical for improving patient prognosis. Although the ideal evaluation time and risk factors, especially for premature infants, are unclear, the necessity for DDH screening programs for term and preterm infants is emerging.
Nutrition
Human milk oligosaccharides as immunonutrition key in early life
Jung Ok Shim
Clin Exp Pediatr. 2022;65(7):344-345.   Published online May 3, 2022
· Human milk is a major source of immunonutrients for neonates and infants. Human milk oligosaccharides (HMOs) act as prebiotics and promote the growth of commensal bacteria.
· HMOs inhibit microorganism adhesion to the gut mucosa through interactions with the commensal microbiome and improve gut barrier function by increasing short-chain fatty acid mediated by bifidobacteria and immunomodulation.
· Several randomized controlled trials recently reported on HMOs.
Review Article
Gastroenterology
Clinical importance of immunonutrition in infants: a review of the recent literature
Ji Sook Park
Clin Exp Pediatr. 2022;65(7):337-343.   Published online February 17, 2022
Nutrients are important in the developing immune system. Human milk supplies diverse bioactives to prevent acute infection or chronic inflammation. Immunoglobulins, lactoferrin, and glutamine in human milk decrease gastrointestinal and respiratory infection. Human milk oligosaccharides promote the growth of intestinal microbiota, the gut barrier, and antimicrobial or antiviral activity. Micronutrients act as anti-inflammatory immunonutrients, too. However, the toxicity of some nutrients from an overdose should be considered.
Other
Epidemiology of pediatric fractures before versus during the coronavirus disease 2019 pandemic
Chi Hoon Oh, Siyeong Yoon, Kyung Rae Ko, Young Woo Kwon, Kyeong Mi Kim, Hyun Seo Park, Hogyeong Kang, Inseok Jang, Soonchul Lee
Clin Exp Pediatr. 2022;65(7):330-336.   Published online June 3, 2022
∙ The novel coronavirus disease 2019 (COVID-19) was first reported in December 2019 as a cluster outbreak in Wuhan, since then, national lockdowns have included school closures, stay-at-home orders.
∙ The characteristics of adolescent fractures were often related to physical activity such as sports-related injury.
∙ During the COVID-19 pandemic, both in the East and the West, the incidence of fractures in children and adolescents is showing a decreasing trend worldwide.
∙ Fractures in children and adolescents were significantly reduced in the proportion of relatively low-energy damage, and the incidence of fractures in adolescents with greater activity compared to children was reduced.
∙ If COVID-19 pandemic ends, normal academic and sports activities increase due to the easing of lockdown policies, the number of trauma patients related to increased activity may increase rapidly, and clinics should prepare for this change.
Neurobehavior
Jeopardized mental health of children and adolescents in coronavirus disease 2019 pandemic
Bohyun Jin, Sohee Lee, Un Sun Chung
Clin Exp Pediatr. 2022;65(7):322-329.   Published online June 3, 2022
∙ The coronavirus disease 2019 (COVID-19) pandemic has required preventive measures like self-quarantine, school closures, and lockdown, which ultimately make youth directly and indirectly vulnerable to depression, anxiety, posttraumatic stress disorder, and somatization.
∙ Child abuse is more common in the COVID-19 era than previously.
∙ Pediatricians should carefully examine parental and child mental health to directly and indirectly aid their physical and mental health.
Letter to the Editor
Infection
Changes in epidemiology of parainfluenza virus and respiratory syncytial virus infection during coronavirus disease 2019 pandemic in Korea
Kyung-Ran Kim, Hwanhee Park, Doo Ri Kim, Yae-Jean Kim
Clin Exp Pediatr. 2022;65(6):320-321.   Published online March 10, 2022
Question: How the epidemiology of other childhood respiratory viruses has changed during coronavirus disease 2019 (COVID-19) in Korea?
Finding: Parainfluenza virus (PIV) typically circulated in the spring, and respiratory syncytial virus (RSV) epidemic started in autumn in Korea before COVID-19 pandemic. PIV and RSV seasons disappeared in 2020 and came back in 2021 with atypical seasonality. PIV season was changed from spring to autumn, and the beginning of RSV season was slightly delayed from autumn to early winter in 2021.
Meaning: Circulation of PIV and RSV was changed to unusual seasons and patterns during COVID-19 pandemic period.
Original Article
Neurology
Neurodevelopmental outcomes and comorbidities of children with congenital muscular torticollis: evaluation using the National Health Screening Program for Infants and Children database
Og Hyang Kim, Seung Won Lee, Eun Kyo Ha, Ju Hee Kim, Yun Hye Jo, Seongyeong Rhie, Man Yong Han, Kyu Young Chae
Clin Exp Pediatr. 2022;65(6):312-319.   Published online December 9, 2021
Question: What comorbidities are increased in children with congenital muscular torticollis (CMT)? Are there differences in the neurodevelopmental outcomes of children with CMT who received physical therapy versus those who did not?
Finding: The risk of congenital musculoskeletal deformities is increased in CMT. Children who did not receive physical therapy were at greater risk of neurodevelopmental delay.
Meaning: In CMT, musculoskeletal comorbidities should be identified and active early treatment provided.
Endocrinology
Effects of probiotics combined with dietary and lifestyle modification on clinical, biochemical, and radiological parameters in obese children with nonalcoholic fatty liver disease/nonalcoholic steatohepatitis: a randomized clinical trial
Thushara Rodrigo, Samaranayake Dulani, Sumudu Nimali Seneviratne, Arjuna P. De Silva, Jerad Fernando, H. Janaka De Silva, Jayasekera , V. Pujitha Wickramasinghe
Clin Exp Pediatr. 2022;65(6):304-311.   Published online November 11, 2021
Question: Could probiotics be used as a therapeutic modality in nonalcoholic fatty liver disease/nonalcoholic steatohepatitis?
Finding: There seem no added advantages over lifestyle modifications compared to Probiotics.
Meaning: There does not seem to be an advantage of probiotics over lifestyle modifications in improving obesity-associated metabolic derangement in children.
Editorial
Cardiology
Coronavirus disease 2019 and mRNA vaccines: what’s next – miRNA?
Joon Kee Lee, Heon-Seok Han
Clin Exp Pediatr. 2022;65(6):302-303.   Published online March 28, 2022
MicroRNAs (miRNAs) are small single-stranded noncoding RNA molecules that function in RNA silencing and the posttranscriptional regulation of gene expression. The potential role of miRNAs as biomarkers of myocarditis is promising, and miRNAs are expected to be utilized in various clinical fields in the future.
Endocrinology
Low bone mineral density can occur in children after shortterm systemic glucocorticoid treatment
Moon Bae Ahn
Clin Exp Pediatr. 2022;65(6):300-301.   Published online April 27, 2022
Osteoporosis diagnosed in children with chronic diseases is a major endocrine complication triggered by the disease itself or its treatment. Although age upon starting osteotoxic agents and the their duration of use are vital contributors, spontaneous recovery of bone mass following treatment completion is a privilege of this specific age group. For any patients short-term glucocorticoid therapy, bone health screening is the next step.
Review Article
Neurology
Recent trends of healthcare information and communication technologies in pediatrics: a systematic review
Se young Jung, Keehyuck Lee, Hee Hwang
Clin Exp Pediatr. 2022;65(6):291-299.   Published online December 15, 2021
· The innovation of healthcare information communication technology (ICT) was accelerated with the adoption of electronic health records (EHRs).
· Telemedicine currently has no technical barriers.
· EHRs and personal health records are being connected, and mobile/wearable technologies are being integrated into them.
· Conventional rule-based clinical decision support systems have already been implemented and used in EHRs and PHRs. Artificial intelligence/machine learning improves precision and accuracy.
Endocrinology
Pediatric hypertension based on Japanese Society of Hypertension Guidelines (JSH 2019) with actual school blood pressure screening data in Japan
Toru Kikuchi
Clin Exp Pediatr. 2022;65(6):283-290.   Published online November 26, 2021
The prevalence of Japanese pediatric hypertension is 0.9% based on proper measurement protocols. Hypertensive children tend to be hypertensive adults. Pediatric essential hypertension is characterized by an absence of symptoms, obesity, a family history of hypertension, and a low birth weight. The most common causes of pediatric secondary hypertension are renal parenchymal and renovascular diseases. Important factors controlling pediatric hypertension include healthy lifestyle modifications and pharmacotherapy.
Neurology
Big data analysis and artificial intelligence in epilepsy – common data model analysis and machine learning-based seizure detection and forecasting
Yoon Gi Chung, Yonghoon Jeon, Sooyoung Yoo, Hunmin Kim, Hee Hwang
Clin Exp Pediatr. 2022;65(6):272-282.   Published online November 26, 2021
· Big data analysis, such as common data model and artificial intelligence, can solve relevant questions and improve clinical care.
· Recent deep learning studies achieved 0.887–0.996 areas under the receiver operating characteristic curve for automated interictal epileptiform discharge detection.
· Recent deep learning studies achieved 62.3%–99.0% accuracy for interictal-ictal classification in seizure detection and 75.0%– 87.8% sensitivity with a 0.06–0.21/hr false positive rate in seizure forecasting.
Letter to the Editor
Neonatology (Perinatology)
Telemedicine as progressive treatment approach for neonatal jaundice due to the coronavirus disease 2019 pandemic
Sukanya Sudhir Joshi, Bithiah Roy Benroy, Isabell Nelson Lawrence, Thanuja Jayasri Suresh
Clin Exp Pediatr. 2022;65(5):269-271.   Published online February 7, 2022
Question: How can the management of neonatal jaundice (NJ) be enhanced through telemedicine?
Finding: Teleconsultations, drive-through testing, and the use of an application to assess neonatal jaundice at home are being successfully used, but they must be further researched before being implemented on a larger scale.
Meaning: Recent technology allows for the treatment of NJ at home with an application that helps reduce hospital burden.
Original Article
Other
Risk factors and screening timing for developmental dysplasia of the hip in preterm infants
Ga Won Jeon, Hye Jung Choo, Yong Uk Kwon
Clin Exp Pediatr. 2022;65(5):262-268.   Published online November 5, 2021
Question: When is the best screening timing and what is the risk factor for developmental dysplasia of the hip (DDH) in preterm infants?
Finding: Ultrasonography performed earlier than 38 weeks of postmenstrual age caused unnecessary subsequent ultrasonography. DDH did not occur predominantly on the left side or in breech infants.
Meaning: The screening timing, etiology, and risk factors for DDH in preterm infants are somewhat different from those in term infants.
General Pediatrics
Effect of 2–6 weeks of systemic steroids on bone mineral density in children
Athira Kuniyil, Somdipa Pal, Namrita Sachdev, Tribhuvan Pal Yadav
Clin Exp Pediatr. 2022;65(5):254-261.   Published online November 18, 2021
Question: Does steroid use for 2–6 weeks in children affect bone mineral content (BMC) or density (BMD)?
Finding: Steroid use for 2–6 weeks significantly decreased BMC and BMD of the whole body, total body less the head, lumbar spine, and distal radius. A significant negative correlation was observed among BMD, duration, and cumulative dose.
Meaning: Steroid use for 2–6 weeks in children negatively affected BMC and BMD.
Editorial
Endocrinology
Is type 1 diabetes related to coronavirus disease 2019 in children?
Minsun Kim
Clin Exp Pediatr. 2022;65(5):252-253.   Published online March 29, 2022
· Evidence shows that patients with type 1 diabetes have been severely affected by coronavirus disease 2019 (COVID-19) in various ways.
· Although there is no reliable evidence that COVID-19 worsens or induces diabetes, it can impair β-cell insulin secretion and glucose control by inducing inflammation and cytokine production.
· A study is needed of the short- and long-term relationship between diabetes and COVID-19 in the Korean pediatric population.
Infection
Effects of nonpharmaceutical interventions for coronavirus disease 2019
Jae Hong Choi
Clin Exp Pediatr. 2022;65(5):250-251.   Published online March 22, 2022
∙ Nonpharmaceutical interventions (NPIs) have decreased the incidence of various infectious diseases, including coronavirus disease 2019 (COVID-19).
∙ During the 2-year COVID-19 pandemic, NPIs changed patients’ daily lives, and the impact on mental health was notable.
∙ The effects of NPIs were evaluated in detail, considering both infections and mental health.
Review Article
Other
Knowledge-guided artificial intelligence technologies for decoding complex multiomics interactions in cells
Dohoon Lee, Sun Kim
Clin Exp Pediatr. 2022;65(5):239-249.   Published online November 26, 2021
· The need for data-driven modeling of multiomics interactions was recently highlighted.
· Many artificial intelligence-driven models have been developed, but only a few have incorporated biological domain knowledge within model architectures or training procedures.
· Here we provide a comprehensive review of deep learning models to decipher complex multiomics interactions regarding the biological guidance imposed upon them to facilitate further development of biological knowledge-guided deep learning models.
Cardiology
Implication of microRNA as a potential biomarker of myocarditis
Jin-Hee Oh, Gi Beom Kim, Heeyoung Seok
Clin Exp Pediatr. 2022;65(5):230-238.   Published online March 2, 2022
· Myocarditis was recently examined quantitatively as inflammation of the heart muscle based on endomyocardial biopsy, and its noninvasive diagnosis remains unsatisfactory.
· Additionally, numerous miRNAs (miR-155, miR-146b, miR-590, miR-221, miR-222, etc.) coupled with inflammation or viral activation have been examined in myocarditis patients or mouse models.
· The recent identification of mmu-miR-721 (has-miR-Chr8: 96), a myocarditis-specific microRNA, demonstrated its potential as an acute myocarditis biomarker.
Neurobehavior
Psychological aspects in children and parents of children with chronic kidney disease and their families
Alemsungla Aier, Priya Pais, Vijaya Raman
Clin Exp Pediatr. 2022;65(5):222-229.   Published online November 10, 2021
· Childhood chronic kidney disease (CKD) is complex and requires lifetime medical treatment.
· Children with CKD are at risk for emotional, behavioral, social, and academic difficulties that significantly affect their quality of life.
· Caring for children with CKD is stressful for families.
· These unique challenges are crucial and can negatively impact treatment outcomes.
· Awareness of and addressing these evolving psychosocial issues can foster their developing needs.
Infection
Four months of rifampicin monotherapy for latent tuberculosis infection in children
Chi Eun Oh, Dick Menzies
Clin Exp Pediatr. 2022;65(5):214-221.   Published online October 29, 2021
· Recently, the importance of a short-term treatment regimen including rifamycin has been highlighted in the treatment of latent tuberculosis infection (LTBI).
· Four prospective or retrospective studies in children consistently reported that a 4-month daily rifampicin regimen (4R) had a higher completion rate than and comparable safety to a nine-month daily isoniazid regimen.
· We suggest rifampicin 20–30 mg/kg/day for children aged 0–2 years and 15–20 mg/kg/day for children aged 2–10 years in 4R to treat LTBI.
Letter to the Editor
Other
Changes in air pollution and childhood respiratory viral infections in Korea post-COVID-19 outbreak
Hyung Kyu Park, Jung Yeon Shim
Clin Exp Pediatr. 2022;65(4):211-213.   Published online February 17, 2022
Clinical note
General Pediatrics
Diabetic ketoacidosis in children induced by coronavirus disease 2019 (COVID-19) diabetic ketoacidosis post-COVID-19 in children
Neha Thakur, Narendra Rai
Clin Exp Pediatr. 2022;65(4):209-210.   Published online November 30, 2021
Original Article
General Pediatrics
Early initiation of breastfeeding and factors associated with its delay among mothers at discharge from a single hospital
J. Jenifer Florence Mary, R. Sindhuri, A. Arul Kumaran, Amol R. Dongre
Clin Exp Pediatr. 2022;65(4):201-208.   Published online October 18, 2021
Background: According to the National Family Health Survey– 4, in India, 78.9% of deliveries occur in institutions, although only 42.6% of new mothers initiate breastfeeding within 1 hour of delivery.
Purpose: To estimate the proportion of early initiation of breastfeeding (EIBF) among new mothers at discharge from a tertiary care hospital and identify the determinants of delayed initiation of breastfeeding among...
Emergency Medicine
Nonfatal injuries in Korean children and adolescents, 2007–2018
Gyu Min Yeon, Yoo Rha Hong, Seom Gim Kong
Clin Exp Pediatr. 2022;65(4):194-200.   Published online September 9, 2021
Question: How many children and adolescents have experienced nonfatal injuries in the previous year?
Finding: Among Korean children and adolescents, 8.1% experienced at least one injury per year. We found no significant change in the incidence of injuries over the previous 12 years.
Meaning: The incidence of injuries is higher than this estimation; therefore, more attention and effort are needed to prevent injuries among children and adolescents.
Neonatology (Perinatology)
Comparison of minimally invasive surfactant therapy with intubation surfactant administration and extubation for treating preterm infants with respiratory distress syndrome: a randomized clinical trial
Mohammad Kazem Sabzehei, Behnaz Basiri, Maryam Shokouhi, Sajad Ghahremani, Ali Moradi
Clin Exp Pediatr. 2022;65(4):188-193.   Published online July 28, 2021
Question: Are the short-term outcomes of minimally invasive surfactant therapy (MIST) relatively superior to those of INtubation, SURfactant administration, and Extubation (INSURE) in preterm infants with respiratory distress syndrome (RDS)?
Finding: MIST could be an appropriate substitution for INSURE in preterm infants with RDS since it reduced hospitalization time and number of side effects.
Meaning: MIST is recommended for surfactant administration for its proven advantages over the INSURE technique.
Review Article
Neonatology (Perinatology)
Pathophysiology, classification, and complications of common asymptomatic thrombocytosis in newborn infants
Ga Won Jeon
Clin Exp Pediatr. 2022;65(4):182-187.   Published online October 18, 2021
· Thrombocytosis, common in newborns and infants (<2 years) (3%–13%), is caused by elevated thrombopoietin (TPO) concentrations.
· Serum TPO levels are significantly higher immediately to 1 month postnatal and decrease with age.
· Platelet counts are positively correlated with gestational age at birth and postnatal age.
· Thrombocytosis is more common in preterm than in term infants.
· Thrombocytosis in newborns is reactive and resolves spontaneously without complications.
Endocrinology
Genetic factors in precocious puberty
Young Suk Shim, Hae Sang Lee, Jin Soon Hwang
Clin Exp Pediatr. 2022;65(4):172-181.   Published online October 18, 2021
· Mutations in the kisspeptin (KISS1), kisspeptin receptor (KISS1R), makorin ring finger protein 3 (MKRN3), and delta-like homolog 1 (DLK1) genes are associated with idiopathic central precocious puberty (ICPP).
· A few genes related to pubertal onset have been implicated in ICPP.
· Epigenetic factors such as DNA methylation, histone posttranslational modifications, and noncoding ribonucleic acids may be related to ICPP
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