메타콜린 기관지유발검사의 세 프로토콜 비교 (Comparison of 3 protocols in the methacholine bronchial provocation test)

서지정보

· 발행기관 : 대한 소아알레르기 호흡기학회
· 수록지 정보 : Allergy Asthma & Respiratory Disease / 12권 / 3호 / 140 ~ 146페이지
· 저자명 : 강성윤, 손지우, 이상민, 김세훈, 김태범, 이상표

초록

Purpose: In Korea, KoKo dosimetry and Aerosol Provocation System (APS) are used in the methacholine provocation test (MBPT). In this study, three protocols of the MBPT were compared.
Methods: In patients showing a positive MBPT using short 2-concentration methods for APS with cumulative provocative doses of methacholine which results in a 20% fall in forced expiratory volume in 1 second (FEV1) (PD20) ≤962.81, the MBPT was repeated, using 14-breaths methods for APS. In them, PD20 of those 2 protocols were compared to each other. Provocative concentration of methacholine which results in a 20% fall in FEV1 (PC20) in 14-breaths methods was also compared with that of 5-breaths methods in other patients showing a positive MBPT with KoKo dosimettry during the study period.
Results: The positive rate in short 2-concentration methods was 18.1% (43 of 238), while that in 5-breaths methods was 14.0% (6 of 43). They were not different from each other (P=0.342). In 7 patients who underwent the MBPT twice, using short 2-concentration and subsequent 14-breaths methods. The median of PD20 with a positive MBPT using short 2-concentration methods was 573.8 μg with interquartile range (IQR) of 147.8–682.3 μg, whereas that in repeated MBPT using 14-breaths methods was 526.4 μg (IQR, 95.0– 907.1 μg). They did not differ from each other (P=0.735). The median of PC20 in MBPT using 14-breaths methods was 4.76 mg/mL (IQR, 0.066–10.3 mg/mL) tended to be higher than that in other 6 patients who showed a positive MBPT using 5-breaths methods, 1.95 mg/mL (IQR, 0.42–4.85 mg/mL), but it was not significant (P=0.534).
Conclusion: Bronchial hyperresponsiveness was not different in 3 protocols of MBPT.

영어초록

Purpose: In Korea, KoKo dosimetry and Aerosol Provocation System (APS) are used in the methacholine provocation test (MBPT). In this study, three protocols of the MBPT were compared.
Methods: In patients showing a positive MBPT using short 2-concentration methods for APS with cumulative provocative doses of methacholine which results in a 20% fall in forced expiratory volume in 1 second (FEV1) (PD20) ≤962.81, the MBPT was repeated, using 14-breaths methods for APS. In them, PD20 of those 2 protocols were compared to each other. Provocative concentration of methacholine which results in a 20% fall in FEV1 (PC20) in 14-breaths methods was also compared with that of 5-breaths methods in other patients showing a positive MBPT with KoKo dosimettry during the study period.
Results: The positive rate in short 2-concentration methods was 18.1% (43 of 238), while that in 5-breaths methods was 14.0% (6 of 43). They were not different from each other (P=0.342). In 7 patients who underwent the MBPT twice, using short 2-concentration and subsequent 14-breaths methods. The median of PD20 with a positive MBPT using short 2-concentration methods was 573.8 μg with interquartile range (IQR) of 147.8–682.3 μg, whereas that in repeated MBPT using 14-breaths methods was 526.4 μg (IQR, 95.0– 907.1 μg). They did not differ from each other (P=0.735). The median of PC20 in MBPT using 14-breaths methods was 4.76 mg/mL (IQR, 0.066–10.3 mg/mL) tended to be higher than that in other 6 patients who showed a positive MBPT using 5-breaths methods, 1.95 mg/mL (IQR, 0.42–4.85 mg/mL), but it was not significant (P=0.534).
Conclusion: Bronchial hyperresponsiveness was not different in 3 protocols of MBPT.

참고자료

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