持续声门下吸引对预防呼吸机相关性肺炎的研究

目的：观察持续声门下吸引预防机械通气（MV）发生呼吸机相关性肺炎的临床价值。方法：将ICU 72例气管插管行机械通气的患者随机分为观察组36例、对照组36例,对照组采用常规气道护理,观察组在此基础上行持续声门下吸引,收集口咽部、声门下、下呼吸道分泌物进行细菌学检查。结果：机械通气5 d内观察组呼吸机相关肺炎发生率明显低于对照组;观察组声门下分泌物培养革兰阳性致病菌数明显少于对照组。结论：持续声门下吸引可减少和延迟呼吸机相关性肺炎的发生。

Study on Continuous Aspiration of Subglottic Secretion for Preventing Ventilator-associated Pneumoni

Objective：To study the clinical effect of continuous aspiration of subglottic secretion（CASS） on ventilator-associated pneumoni（VAP） in machanically ventilated（MV） patients.Methods：Divide 72 patients undergoing mechanical ventilation via tracheal intubation in ICU into observation group（n=36） and control group（n=36）.Give control group routine inake-ports nursing care.On this basis,give observation group continuous aspiration of subglottic secretion.Collect the scraping-pharynx specimen,the subglottic secretion,and the lower airway secretion and make bacteriological test.Results：The comparison of the two groups：in 5 days of mechanical ventilation：the ventilator-associated pneumonia in observation group is obviously lower than in control group;ventilator-associated pneumonia appears later;Gram-positive bacteria in subglottic exudates is obviously less than in control group.Conclusions：Continuous aspiration of secretion can control and delay the ventilator-associated pneumonia.