COPD Exacerbation Treatment Ipratropium of COPDAE Albuterol of COPDAE Corticosteroids of COPDAE Antibiotics of COPDAE Oxygenation of COPDAE Noninvasive positive-pressure ventilation of COPDAE Endotracheal intubation of COPDAE Other measures of COPDAE Post-exacerb care of COPDAE