What are the final symptoms of copd-emphysema?

COPD: Severe incapacitating shortness of breath and confusion from hypoxia(low oxygen) and carbon dioxide retention.

Final?: If you mean what are the symptoms that occur before death there are several. Persistent shortness of breath even at rest, wheezing and excessive sleepiness can all occur. Typically, an infection causes a sudden worsening of breathing that causes respiratory failure. Deciding whether to receive ventilator support or just get comfort measures should be thought about in advance.