기관지 과반응성을 평가하기 위한 저온저습공기 기관지 자극장치의 개발 및 활용

Cold dry air (CDA) bronchial provocation test is useful in patient with bronchial hyper-responsiveness. We performed CDA bronchial provocation in a 7-year-old boy with asthma and subjective cold hyper-responsiveness (SCH). He reported increase of symptom score after provocation. His spirometry revealed that there was significant decrease of FEV1 (1.22 to 0.70 liter), FVC (2.81 to 2.34 liter), FEV1/FVC ratio (43.4% to 29.9%), FEF25- 75% (0.49 to 0.22 liter/second) and PEF (118 to 88 liter/second). It is possible that CDA bronchial provocation test might be a useful tool for identifying and evaluating bronchial hyper- responsiveness. (J Clinical Otolaryngol 2016;27:362-365)