Changes in the Flow-Volume Curve According to the Degree of Stenosis in Patients With Unilateral Main Bronchial Stenosis

유정근; 김호중; 고유상; 이진아; 고원중; 이경수; 권오정; 전경만; 엄상원; 서지영; 정만표

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자료유형: 학술저널

저자정보: 유정근 김호중 고유상 이진아 고원중 이경수 권오정 전경만 엄상원 서지영 정만표

저널정보: 대한이비인후과학회 Clinical and Experimental Otorhinolaryngology Clinical and Experimental Otorhinolaryngology 제8권 제2호

발행연도: 2015.1

수록면: 161 - 166 (6page)

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Objectives. The shape of the flow-volume (F-V) curve is known to change to showing a prominent plateau as stenosis progresses in patients with tracheal stenosis. However, no study has evaluated changes in the F-V curve according to the degree of bronchial stenosis in patients with unilateral main bronchial stenosis. Methods. We performed an analysis of F-V curves in 29 patients with unilateral bronchial stenosis with the aid of a graphic digitizer between January 2005 and December 2011. Results. The primary diseases causing unilateral main bronchial stenosis were endobronchial tuberculosis (86%), followed by benign bronchial tumor (10%), and carcinoid (3%). All unilateral main bronchial stenoses were classified into one of five grades (I, ≤25%; II, 26%–50%; III, 51%–75%; IV, 76%–90%; V, >90% to near-complete obstruction without ipsilateral lung collapse). A monophasic F-V curve was observed in patients with grade I stenosis and biphasic curves were observed for grade II–IV stenosis. Both monophasic (81%) and biphasic shapes (18%) were observed in grade V stenosis. After standardization of the biphasic shape of the F-V curve, the breakpoints of the biphasic curve moved in the direction of high volume (x-axis) and low flow (y-axis) according to the progression of stenosis. Conclusion. In unilateral bronchial stenosis, a biphasic F-V curve appeared when bronchial stenosis was >25% and disappeared when obstruction was near complete. In addition, the breakpoint moved in the direction of high volume and low flow with the progression of stenosis.

#Maximal Expiratory Flow-Volume Curves #Spirometry #Bronchi

참고문헌 (23)

참고문헌 신청

Anzueto A / 1994 / Use of the flow-volume loop in the diagnosis of bronchial stenosis after single lung transplantation / Chest 105 (3) : 934 ~ 936

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Breen PH / 1995 / Exhaled flow monitoring can detect bronchial flap-valve obstruction in a mechanical lung model / Anesth Analg 81 (2) : 292 ~ 296

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