RESUMO
Epistaxis is a common otolaryngologic complaint experienced by 60 percent of the U.S. population and can be the result of either local or systemic disturbance. Most nosebleeds arise from an anastomotic region along the anterior nasal septum known as Kiesselbach's plexus. However, roughly ten percent of nosebleeds originate posteriorly from the sphenopalatine branch of the maxillary artery. Posterior nosebleeds can be more difficult to control and are frequently associated with systemic derangement. Patients presenting with a nosebleed should first be assessed for airway patency and hemodynamic stability. Once the patient is confirmed to be acutely stable, pre-existing clots should be cleared from the nasal cavity and the nasal alae should be compressed against the septum for ten to fifteen minutes. Application of a topical vasoconstricting agent can also be considered at this time. If the nosebleed persists and the location of the bleed can be visualized, chemical or electrical cautery can be used. If the site of the bleed cannot be identified, nasal packing materials in the form of lubricant-impregnated ribbon gauze or readymade nasal packing devices can be placed to tamponade the bleed. Following failure of these conservative treatment modalities, otolaryngologist consultation should be sought. Next steps in management may include arterial ligation or embolization.
