4Torres A, Aznar R, Gatell J M, et al.Ineidenee, risk and prognosis facto~ of nosocomial pneumonia in mechanically ventilated patients[J].Am RevRespirDis, 1990, 142(3): 523.
5Amri Maleh V,Monadi M,Heidari B,et al.Efficiency and outcome of non-invasive versus invasive positive pressure ventilation therapy inrespiratory failure due to chronic obstructive pulmonary disease[J].Caspian J Intern Med,2016,7(2):99-104.
6Pejkovska S,Kaeva BJ,Goseva Z,et al.Predictive factors for the effect of treatment by noninvasive ventilation in patients with respiratory failure as a result of acute exacerbation of the chronic obstructive pulmonary disease[J].Open Access Maced J Med Sci,2015,3(4):655-660.
7Fan L,Zhao Q,Liu Y,et al.Semiquantitative cough strength score and associated outcomes in noninvasive positive pressure ventilation patients with acute exacerbation of chronic obstructive pulmonary disease[J].Respir Med,2014,108(12):1801-1807.
8Ko BS,Ahn S,Lim KS,et al.Early failure of noninvasive ventilation in chronic obstructive pulmonary disease with acute hypercapnic respiratory failure[J].Intern Emerg Med,2015,10(7):855-860.
9Fiorino S,Bacchi-Reggiani L,Detotto E,et al.Efficacy of non-invasive mechanical ventilation in the general ward in patients with chronic obstructive pulmonary disease admitted for hypercapnic acute respiratory failure and pH<7.35:a feasibility pilot study[J].Intern Med J,2015,45(5):527-537.
10Neame M,Aragon O,Fernandes RM,et al.Salbutamol or aminophylline for acute severe asthma:how to choose which one,when and why?[J].Arch Dis Child Educ Pract Ed,2015,100(4):215-222.