Ethmoid ligation

1. Severe bleeding above the free edge of the middle turbinate (mostly occurs after head and face trauma), and those who have failed packing or other hemostatic measures However, the nosebleeds caused by rupture of intracranial internal carotid aneurysm should be ruled out as far as possible. 2. When performing extra-nasal ethmoid sinus surgery (scratch sieving, tumor removal, foreign body removal, etc.), ethmoid artery ligation can reduce intraoperative bleeding.