双套管保护毛刷常用于下呼吸道病原体监测,但对单套管保护毛刷的临床应用价值尚有争议。笔者自1997年4月～1998年4月,借用单套管细胞学毛刷对我院诊断为肺癌的58例门诊和住院患者,通过纤支镜刷取下呼吸道分泌物标本,以检测细菌和病毒的存在情况,结果如下。 临床资料 1.病例选择 Double-sleeving protective brush is often used for monitoring of pathogens in lower respiratory tract, but the clinical application value of single-sleeve protective brush is still controversial. From April 1997 to April 1998, the authors used a single-tube cytology brush for 58 outpatients and inpatients diagnosed with lung cancer in our hospital. They underwent bronchoscopic brush removal of respiratory secretions to detect bacteria and The existence of the virus results are as follows. Clinical data 1. Case selection