Paraquat is a fatal, rapid-acting, nonselective herbicide. Despite the restriction of production and sales of the herbicide in Korea since 2012, already purchased paraquat can incur poisoning. This article describes a 25-month-old boy who accidentally ingested old paraquat on a rural road. After initial decontamination at 2 outside hospitals, he was transferred to the intensive care unit. Given the urine drug concentration of 20,000 ng/mL 2 hours after the intoxication, he received charcoal hemoperfusion and continuous venovenous hemofiltration to enhance the excretion of the herbicide. In 36 hours after intoxication, it was not detected in the urine. The boy was discharged uneventfully on day 8. This case highlights the importance of hemoperfusion in paraquat poisoning.

With the increasing use of laundry detergent pods (LDPs) in Korea, pediatricians and emergency physicians should recognize the risk of poisoning by ingestion of the pods. This report describes a 15-month-old boy who ingested an LDP at home. At the time of hospitalization, he was alert and hemodynamically stable. However, 3 hours after the ingestion, he developed drowsiness, respiratory distress, and metabolic acidosis. Despite the initial supportive therapy, the acidosis worsened, requiring continuous renal replacement therapy. Metabolic acidosis improved within 1 hour after initiation of the continuous renal replacement therapy. He was discharged uneventfully on day 13. At 1-month follow-up, he did not show any sequelae. This case highlights the need for recognition of the risk of poisoning by LDP.

With the increasing use of laundry detergent pods (LDPs) in Korea, pediatricians and emergency physicians should recognize the risk of poisoning by ingestion of the pods. This report describes a 15-month-old boy who ingested an LDP at home. At the time of hospitalization, he was alert and hemodynamically stable. However, 3 hours after the ingestion, he developed drowsiness, respiratory distress, and metabolic acidosis. Despite the initial supportive therapy, the acidosis worsened, requiring continuous renal replacement therapy. Metabolic acidosis improved within 1 hour after initiation of the continuous renal replacement therapy. He was discharged uneventfully on day 13. At 1-month follow-up, he did not show any sequelae. This case highlights the need for recognition of the risk of poisoning by LDP.

Kawasaki disease, also known as mucocutaneous lymph node syndrome, is a common form of vasculitis in childhood. Among the recent trends in Kawasaki disease, it is notable that the prevalence rate is increasing, and the proportion of “incomplete” Kawasaki disease is also increasing. A delayed diagnosis with prolonged fever can cause complications, such as coronary artery aneurysm and decreased myocardial contractility. These complications might lead to significant morbidity and mortality. Kawasaki disease is diagnosed when the patient meets the principal criteria for clinical symptoms. Following the diagnostic criteria can prevent overdiagnosis but lead to missing of the incomplete form of the disease. Therefore, it is important to accurately understand Kawasaki disease. As the coronavirus disease 2019 (COVID-19) pandemic continues, concerns about a novel severe Kawasaki-like disease in children related to COVID-19 emerges. Indeed, there have been several reports of Kawasaki-like disease related to COVID-19 in children. Kawasaki disease is no longer rare and is often encountered at hospitals. This paper will provide useful and accurate information on Kawasaki disease.

Purpose: This study aimed to investigate the clinical characteristics of human parechovirus (HPeV) infection in sepsis-like syndrome in infants aged under 3 months. Methods: Medical records of infants aged under 3 months with sepsis-like symptoms who were admitted between July 1, 2018 and August 31, 2018 were reviewed. A multiplex reverse transcription-polymerase chain reaction panel test was performed on the cerebrospinal fluid (CSF). Thirty-nine enrolled infants were categorized into three groups: 11 in group 1 (HPeV detected in the CSF), 13 in group 2 (enterovirus detected in the CSF), and 15 in group 3 (no virus detected in the CSF). Results: Compared with groups 2 and 3, a higher proportion of group 1 had tachycardia, tachypnea, apnea, and hypotension (P<0.05). A significantly lower white blood cell (WBC) count was noted in group 1 than in groups 2 and 3 (5,622±2,355/μL, 9,397±2,282/μL, and 12,312±7,452/μL, respectively; P=0.005). The CSF WBC count was lower in group 1 than in groups 2 and 3 (0.9±1.7/μL, 85.1±163.6/μL, and 3.7±6.9/μL, respectively; P=0.068). The proportion of patients requiring inotrope support (36.6% vs. 0% and 6.6%), mechanical ventilation (18.1% vs. 0% and 0%), and high flow nasal cannula (45.4% vs. 15.3% and 6.6%) was higher in group 1 than in groups 2 and 3. All patients recovered completely without complications. Conclusions HPeV infection shows a severe clinical course and can cause a severe sepsis-like syndrome in infants aged under 3 months. Early diagnosis and proper treatment of HPeV infection are required.

PURPOSE: The aim of this study was to evaluate whether infants with rhinovirus (RV) infection-induced wheezing and those with respiratory syncytial virus (RSV) infection-induced wheezing have different cytokine profiles in the acute stage. METHODS: Of the infants with lower respiratory tract infection (LRTI) between September 2011 and May 2012, 88 were confirmed using reverse transcription polymerase chain reaction and hospitalized. Systemic interferon-gamma (IFN-γ), interleukin (IL)-2, IL-12, IL-4, IL-5, IL-13, and Treg-type cytokine (IL-10) responses were examined with multiplex assay using acute phase serum samples. RESULTS: Of the 88 patients, 38 had an RV infection (RV group) and 50 had an RSV infection (RSV group). In the RV group, the IFN-γ and IL-10 concentrations were higher in the patients with than in the patients without wheezing (P=0.022 and P=0.007, respectively). In the RSV group, the differences in IFN-γ and IL-10 concentrations did not reach statistical significance between the patients with and the patients without wheezing (P=0.105 and P=0.965, respectively). The IFN-γ and IL-10 concentrations were not significantly different between the RV group with wheezing and the RSV group with wheezing (P=0.155 and P=0.801, respectively), in contrast to the significant difference between the RV group without wheezing and the RSV group without wheezing (P=0.019 and P=0.035, respectively). CONCLUSION: In comparison with RSV-induced LRTI, RV-induced LRTI combined with wheezing showed similar IFN-γ and IL-10 levels, which may have an important regulatory function.
Humans ; Infant* ; Interferon-gamma ; Interleukin-10 ; Interleukin-12 ; Interleukin-13 ; Interleukin-4 ; Interleukin-5 ; Interleukins ; Polymerase Chain Reaction ; Respiratory Sounds* ; Respiratory Syncytial Viruses* ; Respiratory System* ; Respiratory Tract Infections* ; Reverse Transcription ; Rhinovirus*

OBJECTIVES: The purpose of this study is to evaluate the preliminary effects of school-based short term mental health awareness and school bullying prevention programs. METHODS: From April to December 2013, the Child and Adolescent Mental Health Promotion team of Seoul National Hospital conducted school-based short term social skill training (N=56, 4 sessions), mental health awareness (N=84, 4 sessions) and school bullying prevention programs (N=171, 1 session) in elementary and junior high schools located in Seoul. The changes in the subjects before and after the program were assessed. RESULTS: The a social skills training program improved the 'helping' behaviors in boys (t=-2.355, p<.05) and 'sharing' (t=-3.223, p<.01), 'cooperation' (t=-2.235, p<.05), and 'comforting' (t=-2.830, p<.01) behaviors in girls, assessed using the Prosocial Behavior Questionnaire. The mental health awareness program improved 'general health awareness' (t=2.620, p<.05), measured using the Korean General Health Questionnaire. The school bullying prevention program resulted in decreased 'self esteem' (t=3.769, p<.01), measured using the Self Esteem Scale and decreased 'anger' (t=4.198, p<.01), assessed using the Novaco Anger Scale. CONCLUSION: The results of our preliminary analysis suggest that school-based mental health awareness and school bullying prevention programs may be effective even when conducted for a short term. Future investigation is necessary in order to validate the long term effects of these programs.
Adolescent ; Anger ; Bullying* ; Child ; Education ; Female ; Humans ; Mental Health* ; Self Concept ; Seoul ; Surveys and Questionnaires

PURPOSE: Febrile urinary tract infection (UTI) is one of the commonest bacterial infections in children. The purpose of this study is to investigate the clinical characteristics of the first episode of febrile UTI occurring in children over 5 years compared to those in infants younger than a year. METHODS: We retrospectively reviewed the medical records of 10 patients over 5 years, having febrile UTI, and 25 controls under 1 year. Clinical characteristics including symptoms at admission, the time interval between symptom onset and hospital visit and/or diagnosis, duration of fever, urinalysis, and other laboratory and imaging test results were compared between the two groups. RESULTS: Most patients in the control group showed only high fever at the time of presentation to the hospital. However, 60% of the case group had fever along with gastrointestinal (GI) symptoms such as abdominal and flank pain, vomiting, as well as relatively mild pyuria. The case group showed a longer duration between symptom onset and hospital visit and/or diagnosis. CONCLUSIONS: Delay in diagnosis and initiation of treatment of UTI increases the risk of permanent renal scarring and associated complications. Therefore, early diagnosis and treatment of febrile UTI is vital for very young infants, as well as children considering that febrile UTI could be an important cause of febrile illness in children over 5 years.
Bacterial Infections ; Child ; Cicatrix ; Diagnosis ; Early Diagnosis ; Fever ; Flank Pain ; Humans ; Infant ; Medical Records ; Pyuria ; Retrospective Studies ; Urinalysis ; Urinary Tract Infections ; Vomiting

Different subtypes of dendritic cells (DC) influence the differentiation of naive T lymphocytes into T helper type 1 (Th1) and Th2 effector cells. We evaluated the percentages of DC subtypes in peripheral blood from pregnant women (maternal blood) and their cord blood compared to the peripheral blood of healthy non pregnant women (control). Circulating DC were identified by flow cytometry as lineage (CD3, CD14, CD16, CD19, CD20, and CD56)-negative and HLA-DR-positive cells. Subtypes of DC were further characterized as myeloid DC (CD11c+/CD123+/-), lymphoid DC (CD11c-/CD123+++) and less differentiated DC (CD11c-/CD123+/-). The frequency of DC out of all nucleated cells was significantly lower in maternal blood than in control (P<0.001). The ratio of myeloid DC/lymphoid DC was significantly higher in maternal blood than in control (P<0.01). HLA-DR expressions of myeloid DC as mean fluorescence intensity (MFI) were significantly less in maternal blood and in cord blood than in control (P<0.001, respectively). The DC differentiation factors, TNF-alpha and GM-CSF, released from mononuclear cells after lipopolysaccharide stimulation were significantly lower in maternal blood than in control (P<0.01). The distribution of DC subtypes was different in maternal and cord blood from those of non-pregnant women. Their role during pregnancy remains to be determined.
Adult ; Cell Differentiation ; Dendritic Cells/*classification/cytology/immunology ; Female ; Fetal Blood/cytology/*immunology ; Flow Cytometry ; Granulocyte-Macrophage Colony-Stimulating Factor/metabolism ; HLA-DR Antigens/metabolism ; Humans ; Lipopolysaccharides/pharmacology ; Lymphocyte Activation ; Pregnancy ; T-Lymphocytes/cytology/immunology ; Th1 Cells/cytology/immunology ; Th2 Cells/cytology/immunology ; Tumor Necrosis Factor-alpha/metabolism

PURPOSE: Nocturnal enuresis (NE) is one of the most common problems in childhood. NE has a multifactorial etiology and is influenced by sleep and arousal mechanisms. The aim of the present study was to prospectively evaluate sleep problems and patterns in children with NE compared with normal healthy controls. METHODS: Twenty-eight children with NE and 16 healthy controls were included in the study. To evaluate sleep habits and disturbances, parents and children filled out a questionnaire that included items about sleep patterns and sleep-related behaviors prior to treatment for NE. Demographic factors and other data were compared for the two groups based on the responses to the sleep questionnaire. RESULTS: Night awakening, sleepwalking, and periodic limb movements were more prevalent in children with NE, but symptoms of sleep-disordered breathing were not increased in this group. There were statistically significant differences in periodic limb movements and daytime sleepiness between the two groups. CONCLUSION: Children with NE seemed to have more sleep problems such as night awakening, sleepwalking, and periodic limb movements. In addition, a higher level of daytime sleepiness and hyperactivity in patients with NE suggested a relationship between NE and sleep disorders.
Arousal ; Child* ; Demography ; Extremities ; Humans ; Nocturnal Enuresis* ; Parents ; Prospective Studies ; Sleep Apnea Syndromes ; Sleep Wake Disorders ; Somnambulism