Meta analysis of effect of zero negative pressure and non zero negative pressure endotracheal suctioning in adult pa-tients

doi:10.3969/j.issn.10096493.2015.07.017

Abstract：Objective:To analyze the effect of the traditional sputum suction method(the sputum suction tube in-serting into the deep trachea directly without negative pressure,and then as suctioning as spining exited by openning the negative pressure)which is the endotracheal suction method of inserting into the trachea under zero negative pressure and non zero negative pressure(non zero negative pressure endotracheal suctioning)in adult patients.Methods:Comprehensively collected the randomized controlled trial(RCT)articles about the endotra-cheal suction method using for tracheal intubation and tracheotomy patients by computer,screened literatures and evaluated their quality by system evaluation method of Australia’s JBI center of evidence based health care, and made statistical analysis by using RevMan 5.0.Results:A total of 8 literatures were included.2 quality eval-uation were the B level.Others were the class C.A total of 446 cases of study objects were included.While 221 cases in experimental team and 225 cases in control team.The result of Meta analysis was that comparing with the traditional sputum suction method,the non negative pressure endotracheal suction method could reduce air-way mucosa injury (RR=0.31,95%CI =0.21~0.46,P <0.000 01),pulmonary infection (RR=0.36,95%CI =0.24~0.52,P <0.000 01),suction phlegm times within 24 h(WMD=-6.58,95%CI =-10.03~-3.12,P =0.000 2),and the suction phlegm amount with 24 h(WMD=-34.34,95%CI =-60.73 ~-7.95,P =0.01 ). Conclusion:The effect of reducing the airway mucosa injury,pulmonary infection,suction phlegm times within 24 h and suction phlegm amount with 24 h of the non negative pressure endotracheal suction method was better than that of the traditional sputum suction method.