Indexes including irritable cough, viscidity of sputum, transcutaneous oxygen saturation, heart rate and nursing time of all cases were observed and compared.

• 应用人工鼻进行气道湿化较常规间断注入湿化能减少病人刺激性咳嗽、降低痰液黏稠度,减慢心率、提高氧饱和度,同时减少护理时数。