Thanks for your question on Health Care Magic. In your study patient, possibility of hypercarbia (raised carbon dioxide) is high. COPD patients with acute exacerbation and unconscious state, demands ABG (arterial blood gas) analysis to diagnose hypercarbia. This is the most common cause for unconscious in COPD patient. He may need ventilator support with intravenous bronchodilators, intravenous steroids (effcorlin) and inhaled bronchodilators with inhaled corticosteroid (ICS). Since all these are prescribed medicines, you need to consult doctor for their prescription. Patient with this parameters should be managed in critical care settings. Hope I have solved your query. Wishing good health to your patient. Thanks.