My roommate has had COPD for The last 5 years. He has been on level 8 on his machine. His levels run 93 to 96. Today is levels went up to 98/99 when sitting and would drop to 80 to 83 when he would stand up or take a couple steps. Pulmonologist said to get him to an ER. Can anybody give me some information on this so I don't have to wait?