So last night I had a pt that had a new headache that I ended up CT'ing and by the time they got back from CT the meds I gave her kicked in and her headache was gone and I just d/c'ed her. But that made me think. She takes ASA and Plavix for CAD with stents; what if I needed to do an LP. Is her taking ASA and Plavix a contraindication to LP? What about just ASA?