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3차 의료기관을 방문한 천식 환자에서 아토피 유병률의 변화
박흥우(Heung Woo Park),김상헌(Sang Heon Kim),김상훈(Sang Hoon Kim),장윤혜(Yoon Hae Chang),정희(Hee Chung),이병재(Byung Jae Lee),김윤근(Yoon Keun Kim),조상헌(Sang Heon Cho),민경업(Kyung Up Min),김유영(You Young Kim) 대한천식알레르기학회 2000 천식 및 알레르기 Vol.20 No.1
N/A Background: The prevalence of atopy and atopy-related disease has been known to increase during the past decade. Objective : This study was desinged to evaluate the changes of atopy prevalence among asthmatic patients and the causative allergens. Method : A total of 698 asthmatic patients visiting Seoul National University Hospital in 1983, 1990 and 1997 was recruited. Skin prick test with common inhalant allergens was carried out and interpreted as positive when the mean wheal size formed by allergen was larger than 3 mm. Atopy was defined when skin reaction to one or more allegens was positive. Result. The prevalence of atopy among asthmatic patients was 54% in 1983, 48.8% in 1990 and 58% in 1997, respectively. The prevalence of atopy decreased as the age of patients in- creased. Recently, old asthmatic patients ( >55 years) showed a higher tendency to visit the tertiary referral hospital. When the data were analyzed according to age, the prevalence of atopy significantly increased among asthmatic patients aged 15-35 years, in whom the prevalence was 60.4% in 1988 and 81.3% in 1997 (p< 0.05). The positive rate of skin test to Dermatophagoides pteronyssinus, cat fur, mugwort, ragweed, and grass pollen were significantly higher in 1997 than in 1983 (p < 0.05). Conclusion : The prevalence of atopy among asthmatic patients aged 15-85 years showed significant increase in 1997 compared to 1983. The changes of skin response to Dermatophagoides pteronyssinus, cat fur, mugwort, ragweed, and grass pollen contributed to the increase of atopy.
표면 미세 가공된 측면형 전계 방출 소자를 이용한 초소형 진공 센서의 제작
박흥우(Heung Woo Park),주병권(Byeong Kwon Ju),이원희(Yun Hi Lee),박정호(Jung Ho Park),오명환(Myung Hwan Oh) 한국센서학회 2000 센서학회지 Vol.9 No.3
N/A A micro-vacuum sensor was fabricated for the measurement of the vacuum level in micro-space. The fact that the field emission current was dependent on the environmental vacuum level was employed as an operating principle. 1`he fabricated lateral-type field emitter triode with a cathode, a gate and a anode separated by using the surface micromachining process showed the emission current variation in the range of 1.20∼2.42 μA for the vacuum range of 10^(-5)∼10^(-8) Torr.
박흥우 ( Heung Woo Park ) 대한내과학회 2011 대한내과학회지 Vol.81 No.6
Exercise-induced bronchoconstriction (EIB) is defined as transient, reversible bronchoconstriction that develops after strenuous exercise. If exercise is the only identified trigger for bronchoconstriction, it is called EIB. However, when it is associated with known asthma, then it is defined as EIB with asthma. The role of atopy in the pathogenesis of EIB has not been determined. In this issue of the journal, Kim et al. reported that atopy was a risk factor for EIB in young adult male patients, and sensitization to house dust mites was associated with EIB. This report shed a new light on the pathogenesis of EIB. However, additional large and confirmatory studies should be required to determine the possible association between atopy and EIB. (Korean J Med 2011; 81:720-722)