How Can Nose Bleeding Be Treated While On A Cardiac Stent?

I am concerned about my 72 yr. old brother s a-fib and heart stent meds. He got the stent a few weeks ago and was put on Plavix and Lipitor. He told his pcp he was tired all the time since taking the new meds so they took him off Lipitor and added two of Eliquis tabs a day to his regimen. After no more than 2 weeks if that he sneezed and started bleedin badlt from his nose. Ambulance was called and he was taken to em. Room at small local hospital where they had to cauterize his nose. Why couldn t he just be on Warfarin? Is it not true that it s the only blood thinner that they can reverse if there is a bleeding issue? Are not all the new ones irreversible if there s a major bleed?