I Have Bronchiectasis And Cough A Lot. My Doc Has

I have bronchiectasis and cough a lot. My doc has me doing a nebulizer treatment with 7% sodium chloride solution to make me cough every night. I'm scheduled to have a picc line inserted this Thursday for antibiotic therapy. I have read that coughing can cause the line to displace. I am concerned about continuing this nebulizer treatment with the coughing while I have the picc line. My doc is out of town. Just wondering what you think.