Objective To evaluate the effect of tiotropium bromider powders combined with N-acetylcysteine effervescent tablets on the treatment of chronic obstructive pulmonary disease.Methods The PubMed、Medline、VIP、CNKI、Wanfang Medical Networkand Wanfang Data were searched in English and Chinese from the date of establishment of databases to November 2019. Randomizedcontrolled trials(RCTs)were chosen in which tiotropium bromider powders combined with N-acetylcysteine effervescent tablets was tak?en as observation group, while tiotropium bromider powders alone was taken as control group. statistical analysis using RevMan5.3 soft?ware.Results A totalof 8 RCTswere included, with a total of 704 patients,Both the number of the observation group and the controlgroup are 352 patients. Meta analysis results show that compared with the inhalation of tiotropium alone, the outcome indicators of thecombined medication except the FEV1%pred (WMD=2.37,95%CI:?6.75-11.48,P=0.61)and MMRC (WMD=?0.24,95%CI:?0.60-0.11,P =0.17),its clinical effective rate (RR=1.21,95%CI=1.12-1.31,P < 0.000 01), FEV1(WMD=0.26,95%CI:0.09-0.44,P=0.003), FVC(WMD= 0.32,95%CI:0.27-0.38,P < 0.000 01), FEV1/FVC(WMD=7.74,95%CI:5.28-10.20,P < 0.000 01),PaO2(WMD=10.70,95%CI:5.58-15.81, P < 0.000 1), PaCO2(WMD=?7.81,95%CI:?14.70-?0.91,P=0.03).Conclusion Compared with monotherapy, tiotropium bromide com? bined with N-acetylcysteine effervescent tablets has better clinical efficacy in the treatment of chronic obstructive pulmonary disease,and its blood gas analysis and lung function are improved more significantly. |