Results: sputum crust, irritable cough and blooding in air passage were less seen in treated group than control group(P<0.01).
结果：治疗组形成痰痂、发生刺激性咳嗽、气道出血的例数和吸痰次数均明显少于对照组（P<0.01）；
Results: sputum crust, irritable cough and blooding in air passage were less seen in treated group than control group(P<0.01).
结果：治疗组形成痰痂、发生刺激性咳嗽、气道出血的例数和吸痰次数均明显少于对照组（P<0.01）；
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