Optimal time of the use of non-invasive positive pressure ventilation on acute exacerbation of chronic obstructive pulmonary disease with respiratory failure / 中国实用内科杂志

ABSTRACT

Objective To evaluate the optimal time of the use of non-invasive positive pressure ventilation on the patients with acute exacerbation of COPD(AECOPD).Methods 131 patients were divided at random conventional therapy group(control group)and conventional therapy plus NIPPV group,the patients of NIPPV group were again divided into PaCO2≥9.31 kPa,7.98～