Hyeon Jong Yang

ORCID: 0000-0003-3822-4002
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About
Contact & Profiles
Research Areas
  • Asthma and respiratory diseases
  • Allergic Rhinitis and Sensitization
  • Respiratory and Cough-Related Research
  • Dermatology and Skin Diseases
  • Food Allergy and Anaphylaxis Research
  • Vitamin D Research Studies
  • Contact Dermatitis and Allergies
  • Eosinophilic Esophagitis
  • Pediatric health and respiratory diseases
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Tracheal and airway disorders
  • Network Traffic and Congestion Control
  • Delphi Technique in Research
  • Indoor Air Quality and Microbial Exposure
  • Helicobacter pylori-related gastroenterology studies
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Electroconvulsive Therapy Studies
  • Gastroesophageal reflux and treatments
  • Software System Performance and Reliability
  • Parasite Biology and Host Interactions
  • Career Development and Diversity
  • Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Pharmaceutical studies and practices
  • Marine Ecology and Invasive Species
  • Higher Education and Employability

Soonchunhyang University Hospital
2006-2024

Ewha Womans University
2024

Chungbuk National University
2018

Soonchunhyang University
2001-2015

Catholic University of Korea
2013

WinnMed
2012

Mayo Clinic
2012

Rationale: Beginning in 2006, epidemics of a fatal lung injury unknown cause children were observed Korea every spring. A recent study demonstrated that this type children's interstitial disease (chILD) is associated with humidifier disinfectant use.Objectives: To determine the clinical characteristics chILD and to assess whether nationwide suspension sales autumn 2011 affected its incidence.Methods: The suspected cases between 2006 determined by retrospective study. potential causal...

10.1164/rccm.201306-1088oc article EN American Journal of Respiratory and Critical Care Medicine 2013-11-07

Purpose: To investigate whether prenatal exposure to indoor fine particulate matter (PM2.5) and environmental tobacco smoke (ETS) affects susceptibility respiratory tract infections (RTIs) in infancy, compare their effects between postnatal exposure, determine genetic factors modify these effects.Methods: The study population consisted of 307 birth cohort infants.A diagnosis RTIs was based on parental report a physician's diagnosis.Indoor PM2.5 ETS levels were measured during pregnancy...

10.4168/aair.2015.7.6.573 article EN cc-by-nc Allergy Asthma and Immunology Research 2015-01-01

Gender differences in asthma have been observed with a preponderance of boys affected before puberty and girls during after puberty.The known influences the menstrual cycle on support role for female sex hormones changing expression adolescence.The purpose this study was to investigate obesity, lung function adolescent girls.One hundred three high school (mean age: 15.9± ±0.8 yr) were enrolled.The investigation performed using questionnaire that included history asthma, cycle, other combined...

10.3346/jkms.2009.24.1.20 article EN Journal of Korean Medical Science 2009-01-01

Asthmatics have increased risks of airway-related infections. Little is known about whether this true for non-airway-related serious infections such as Escherichia coli bloodstream infection (BSI). We assessed asthma associated with a risk developing community-acquired E BSI.The study was designed population-based retrospective case-control study.This conducted in Olmsted County, Minnesota.The included 259 all eligible BSI cases MN between 1998 and 2007 birthday-matched, gender-matched...

10.1136/bmjopen-2013-003857 article EN cc-by-nc BMJ Open 2013-10-01

Many patients assume that allergic reactions against foods are responsible for triggering or worsening their symptoms. Therefore, it is important to identify who would benefit from an elimination diet, while avoiding unnecessary dietary restrictions. The diagnosis of food allergy depends on the thorough review patients's medical history, results supplemented trials elimination, and in vivo vitro tests measuring specific IgE levels. However, some cases reliability such procedures suboptimal....

10.3345/kjp.2011.54.1.6 article EN cc-by-nc-nd Korean Journal of Pediatrics 2011-01-01

Purpose: Egg (egg white) allergies are among the most common food in infants and young children.Serum egg white-specific IgE (sIgE) levels have been shown to be correlated with clinical symptoms, predictive decision point of sIgE has proposed used widely setting.However, some patients whose white higher than value show no vice versa.This study was conducted evaluate usefulness antibodies its components diagnosis allergies.Methods: Forty-one younger 2 years age experience intake due concerns...

10.4168/aair.2013.5.3.138 article EN cc-by-nc Allergy Asthma and Immunology Research 2013-01-01

Oral food challenge is a definitive diagnostic test for immediate and occasionally delayed adverse reaction to foods. The gold standard diagnosing allergy still the double-blind, placebo-controlled challenge, but it time-consuming, expensive troublesome physician patients. Open oral controlled by trained personnel useful sufficient methods when concern of bias low. We aimed provide practical guideline in children diagnosis suspected or evaluation tolerance. considered reasons, types,...

10.7581/pard.2012.22.1.4 article EN cc-by-nc Pediatric Allergy and Respiratory Disease 2012-01-01

Gastro-esophageal reflux (GER), particularly non-acid reflux, is common in infants and a known cause of chronic respiratory symptoms infancy. Recent guidelines recommended empirical acid suppression therapy the head-up position patients with suspected GER. However, efficacy upright relieving GER reflux-related unclear. We conducted this study to investigate on symptoms.Thirty-two (21 male; median age, 5 months; range, 0 19 months) unexplained underwent multi-channel intraluminal esophageal...

10.4168/aair.2012.4.1.17 article EN Allergy Asthma and Immunology Research 2011-12-16

Atypical antipsychotics have replaced conventional in the treatment of schizophrenia because they less a propensity to cause undesirable neurologic adverse events including extrapyramidal symptoms, tardive dyskinesia, and neuroleptic malignant syndrome (NMS). However, atypical been known result various metabolic complications such as impaired glucose tolerance, diabetes even diabetic ketoacidosis (DKA). In addition, number NMS cases reported patients treated with antipsychotics, although...

10.3803/enm.2013.28.1.70 article EN cc-by-nc Endocrinology and Metabolism 2013-01-01

Objectives: This study explored the experiences of medical students enrolled in an elective course titled "Healthcare Innovation and Women's Ventures II" at Ewha Womans University College Medicine. The research questions were as follows: First, what motivated to participate experiential entrepreneurship course? Second, did have during Third, changes undergo a result

10.12771/emj.2024.e40 article EN cc-by-nc The Ewha Medical Journal 2024-07-31

Recently, an increase in the number of patients sensitized to rice allergen with or without clinical symptoms has been reported. This study was designed determine major allergens and their significance.Twenty-four children (15 boys 9 girls; mean age, 16.3 months) allergic disease, who were antigen (by UniCAP) Pediatric Allergy Respiratory Center at Soonchunhyang University Hospital, enrolled this study. The allergenicity various types (raw, cooked, heat-treated, simulated gastric fluid...

10.3345/kjp.2011.54.10.414 article EN cc-by-nc-nd Korean Journal of Pediatrics 2011-01-01

Guidelines need to be tailored where they are applied. We aimed describe the distinctive asthma severity profile and pattern of controller prescription in Korean children.Twelve pediatric allergists from tertiary medical centers reviewed records all asthmatic children who visited their clinics between September 1 November 30 2013. Controller prescriptions were re-classified into 4 categories, then prevalence each category patterns according assessed by a Western (Global Initiative for...

10.4168/aair.2017.9.1.52 article EN cc-by-nc Allergy Asthma and Immunology Research 2016-11-02

The etiology of allergic diseases has been considered multi-factorial, comprising genetic, epigenetic, developmental, and environmental factors, as well their complex interactions. rising prevalence disease in recent decades could be explained by changes factors rather than genetic factors. Climate change many significant impacts on aeroallergens such pollen mold. Therefore, climate are to a key factor affecting not only the but also severity disease. In addition, these might more important...

10.5124/jkma.2011.54.9.971 article EN cc-by-nc Journal of Korean Medical Association 2011-01-01

female. The most common allergic disease before 2 years of age was atopic dermatitis (79%. Meanwhile in 2- to 4-year group rhinitis (38% and asthma (37% were predominant. the 4- 6-year (72% followed by (64%. Seventy-three percent children had a family history often fathers (39%. Among patients with 50% experienced their earlier days 30% dermatitis. In addition 57% suffered from Parents believed that serious disease. Conclusion : present study showed tendency march then rhinitis. Early...

10.3345/kjp.2008.51.6.640 article EN cc-by-nc-nd Korean Journal of Pediatrics 2008-01-01

Asthma that is poorly controlled despite adequate treatment should be investigated for medication compliance, adherence, environmental control, asthma mimics, and comorbidities especially in infants young children. Here, the case of a 2-year-old child with refractory coexisting double aortic arch reported.

10.3109/02770903.2010.525676 article EN Journal of Asthma 2010-10-15

Purpose The prevalence of allergic rhinitis is rapidly increasing and results in relatively high socio-economic burden on their family community. However, studies the economic pediatric Korea are limited. Therefore, we conducted this study to investigate impact burden. Methods Two hundred sixty two children with were enrolled 6 secondary or tertiary medical centers Seoul from July September, 2008. We collected data (direct costs, direct nonmedical indirect costs) by face questionnaire...

10.7581/pard.2012.22.2.138 article EN Pediatric Allergy and Respiratory Disease 2012-01-01

Purpose: Bacterial infection with Staphylococcus aureus is a common complication of atopic dermatitis (AD) and involved in the worsening this disease. Recent studies have revealed an increasing prevalence community-associated methicillin-resistant S. (MRSA) among patients AD role vitamin D immunopathogenesis AD. We carried out study to see whether levels correlate MRSA skin colonization Methods: Total 60 aged between 3 months 6 years old were enrolled. measured disease severity using Scoring...

10.4168/aard.2013.1.2.138 article EN Allergy Asthma & Respiratory Disease 2013-01-01

Introduction: Respiratory infection in particular community acquired pneumonia (CAP) children is a major disease that ranks high outpatient and inpatient cases. The causes of CAP vary depending on the individual susceptibility, epidemiological characteristics community, season. We performed this study to establish nationwide survillance network system identify causative agents for antibiotics resistance Korean with CAP.. Methods: monitoring was composed 28 secondary tertiary medical...

10.22541/au.170665803.39233921/v1 preprint EN Authorea (Authorea) 2024-01-30

Purpose : We aimed to evaluate the frequency and characteristics of minor clinical manifestations atopic dermatitis (AD) in Korean children aid diagnosis treatment AD. Methods From April 2007 December 2007, we enrolled 106 (aged 1 month [infants] 15 years) diagnosed with AD at Pediatric Allergy Respiratory Center Soonchunhyang University Hospital. Clinical were examined laboratory findings (total specific immunoglobulin E [IgE] levels peripheral blood eosinophil count) analyzed compared....

10.3345/kjp.2009.52.7.818 article EN cc-by-nc-nd Korean Journal of Pediatrics 2009-01-01

Purpose : The results of pulmonary function test (PFT) in children are variable according to the patient's cooperation and comprehensiveness. This study has intended figure out effectiveness pre-education training with balloons on PFT children. Methods One hundred six mean aged 9.35±2.92 years were tested. All participants performed twice 30 minutes intervals. First after usual instruction second randomly classified grouping; Group 1 repeat balloons, 2 education, both, 3 education about...

10.3345/kjp.2008.51.5.506 article EN cc-by-nc-nd Korean Journal of Pediatrics 2008-01-01
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