Related Experiment Video
Updated: Aug 15, 2026

Induction of Cerebral Arterial Gas Embolism in Rat
Published on: October 18, 2024
Arterial embolization in the management of posterior epistaxis
Nathan P Christensen1, Dana S Smith, Stanley L Barnwell
1Department of Otolaryngology-Head and Neck Surgery, Oregon Health & Science University, Portland, OR 97239, USA.
Objectives:
Treatment of severe epistaxis can encompass many modalities. Control rates with all treatments are good. Morbidity among treatment groups varies. Angiographic embolization is one such method that has a very low complication rate. Over the last 10 years, it has become the preferred treatment at our institution.
Study Design:
Tertiary medical referral centers: OHSU, Portland VAMC.
Materials And Methods:
Retrospective review of 70 patients transferred or admitted with posterior epistaxis and treated with selective angiographic embolization from 1993 to 2002.
Results:
Patients had bleeding for a median of 4.5 days prior to admission. 79% were unilateral. Etiology of bleeding was: idiopathic (61%), previous surgery (11%), anticoagulants (9%), trauma (7%), and other causes (12%). 30% required blood transfusions prior to admission to OHSU (average 4.4 units). No patient required a transfusion postoperatively following angiographic embolization or during their hospitalization. The internal maxillary artery (IMAX) was embolized in 94% (47% unilateral or bilateral IMAX only, 47% unilateral or bilateral IMAX in combination with other vessels, 6% other vessels besides the IMAX). Mean length of stay was 2.5 days. 86% had minor or no complications after the embolization and were discharged within 24 hours. 13% had a major rebleed that required surgical intervention within 6 weeks of the embolization. One patient had a serious neurological complication. Using the data available on 68 of 70 patients, the cost of hospitalization averaged dollar 18,000 with direct costs of embolization averaging dollar 11,000.
Conclusions:
Angiographic embolization is a clinically effective treatment for severe epistaxis.
Ebm Rating:
C.
Related Concept Videos
Epistaxis
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
Venous Thrombosis III: Interprofessional Care
Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia
One of the advantages of...