3Bardi G, Pierotello R, Desideri M. Nasal ventilation in COPD exacerbations : early and late results of a prospective, controlled study [J]. Eur Respir J,2000,15:98 - 104.
4Collaborative research group of noninvasive mechanical ventilation for chronic obstructive pulmonary disease. Early use of non-invasive positive pressure ventilation for acute exacerbations of chronic obstructive pulmonary disease:a muhicentre randomized controlled trial [ J ]. Chin Med J, 2005,118 ( 24 ) : 2034 - 2040.
5Conti G, Antonelli M, Navalesi P. Noninvasive vs. conventional mechanical ventilation in patients with chronic obstructive pulmonary disease after failure of medical treatment in the ward:a randomized trial[J].Intensive Care Med ,2002,28 ( 12 ) : 1701 - 1707.
6Squadrone E, Frigerio P, Fogliati C. Noninvasive vs invasive ventilation in COPD patients with severe acute respiratory failure deemed to require ventilatory assistance[ J]. Intensive Care Med, 2004,30:1303 - 1310.
7Scala R, Naldi M, Archinucci I. Noninvasive positive pressure ventilation in patients with acute exacerbations of COPD and varying levels of consciousness[ J ]. Chest ,2005,128 : 1657 - 1666.
8Diaz O, Begin P, Torrealba B, et al. Effects of noninvasive ventilation on lung hyperinflation in stable hypercapnic COPD [ J ]. Eur Respir J ,2002,20 : 1490 - 1498.
9Keenan SP,Sinuff T,Cook DJ,et al. which patients with acute exacerbation of chronic obstructive pulmonary disease benefit from noninvasive positive pressure ventilation [ J ]. Ann Interu Med, 2003,138:861 - 870.