Cross-Section showing relationship of septum, sinus, eye, and brain There is an active abhorrence between blood thinner medications and ENT surgeons. Not only do blood thinners markedly increase risk of nosebleeds which often require nasal packing (even without surgery), but it can complicate any type of sino-nasal surgery, particularly septoplasty and sinus surgery . With septoplasty or sinus surgery (collectively called sino-nasal surgery), not only is the nasal mucosa actively c…