Ty-Jour T1 - 用蒸馏水吸入后对甲素溶解的敏感性的变化:支气管扩张反应JF - 欧洲呼吸期刊Jo - Eur Respir J SP - 253 LP - 256 VL - 8是 - 2 Au - Kny,S Au- Poterman,R Au - Schwarz,Y Au - Soferman,R Au - Topilsky,M Y1 - 1995/02/01 UR - //www.qdcxjkg.com/content/8/2/253.abstract n2 - the吸入蒸馏水可以诱导支气管混凝土和哮喘素对甲素的敏感性的瞬时增加。本研究的目的是确定诱导的支气管混合物在含有蒸馏水挑战的含量增加的敏感性中的作用。通过吸入蒸馏水,挑战了十八哮喘儿童(9-17岁)。支气管响应性,在吸入蒸馏水之前测定产生20%的甲素溶液,产生20%的强制呼气体积减少,然后测定1.5和24小时。在吸入蒸馏水之后,八名患者(I族)的FEV1减少超过15%(平均23%);然而,在剩余的10(II组)中,减少低于7%(平均1%)。PC20至甲胆碱,几何平均值和95%置信区间(CI),仅在吸入蒸馏水后仅在1.5小时下瞬时降低。在I组中,在基线下,减少为0.78mg.ml-1(95%CI 0.11-5.54mg.ml-1)至0.25mg.ml-1(95%CI 0.03-2.14mg.ml-1); and from 2.67 mg.ml-1 (95% CI 0.35-20.34 mg.ml-1) at baseline to 0.72 mg.ml-1 (95% CI 0.18-14.87 mg.ml-1) after challenge in Group II. The transient increase in sensitivity to methacholine observed following inhalation of distilled water occurred independently of the bronchoconstrictive response. This finding may have important clinical implications when hypo-osmolar solutions are used for delivery of drugs. ER -