After about 20 years of about 80% blocked right carotid, I've now reached the critical stage and need carotid surgery on the right side. My angiogram is scheduled for 9/25. I have Severe (31%FEV1) COPD, oxygen 24/7 and I cough up phlegm every day, sometimes many times a day. That is what is bothering me about upcoming surgery.........if I can't cough. Has anyone gone through carotid surgery with severe COPD?