痰培养在支气管肺部感染的诊断和治疗中广为使用。由间歇正压呼吸用稀释粘液药物和鼻气管吸引技术,虽易获得痰液,但这些方法的痰培养肯定会被鼻、口和咽部的细菌所污染,从而导致不恰当的诊断和抗菌治疗。为尽量避免上呼吸道细菌污染,而获取支气管分泌物标本的方法很多:冲洗咯出痰液、鼻气 Sputum culture is widely used in the diagnosis and treatment of bronchial lung infections. Stimulation with intermittent positive pressure with dilute mucus and nasotracheal suction techniques, although sputum is readily available, the sputum cultures of these methods are certainly contaminated by bacteria in the nose, mouth and pharynx resulting in inadequate diagnosis and antimicrobial treatment . In order to try to avoid bacterial contamination of the upper respiratory tract, and bronchial secretions specimens obtained many ways: flush out a sputum, nose