目的：观察沙丁胺醇溶液以超声雾化器雾化吸入治疗哮喘重度发作的疗效及安全性。
Objective: To observe efficacy and safety of inhaling salbutamol solution by using the ultrasonic nebulizer in treating severe asthma.
目的：观察沙丁胺醇溶液以超声雾化器雾化吸入治疗哮喘重度发作的疗效及安全性。
Objective: To observe efficacy and safety of inhaling salbutamol solution by using the ultrasonic nebulizer in treating severe asthma.
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