PT - JOURNAL ARTICLE AU - Magnus Ekström TI - Non-invasive positive pressure ventilation should be considered in patients with COPD and persistent hypercapnia at least 2 weeks after resolution of acute respiratory failure AID - 10.1136/eb-2017-102789 DP - 2018 Jan 01 TA - Evidence Based Nursing PG - 12--12 VI - 21 IP - 1 4099 - http://ebn.bmj.com/content/21/1/12.short 4100 - http://ebn.bmj.com/content/21/1/12.full SO - Evid Based Nurs2018 Jan 01; 21