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		2:	Prospective clinical study of bleeding sites in idiopathic adult posterior epistaxis.
			著者: Tor W Chiu, Gerry W McGarry 雑誌名: Otolaryngol Head Neck Surg. 2007 Sep;137(3):390-3. doi: 10.1016/j.otohns.2006.10.035. Abstract/Text OBJECTIVES: The precise identification of the bleeding point is important to the efficient management of epistaxis. Our hypothesis was that the septum was the commonest bleeding site. STUDY DESIGN AND SETTING: This was a prospective clinical study of 50 consecutive adult idiopathic posterior epistaxis patients carried out in a busy teaching hospital. METHODS: The nasal cavity was inspected with endoscopy to identify the site of bleeding before any intervention. The location of bleeding sites was recorded on a proforma. RESULTS: Of bleeding sites posterior to the piriform fossa, 94 percent were identifiable, with 70 percent arising from the septum. CONCLUSIONS AND SIGNIFICANCE: This is the largest prospective study of the bleeding site in adult patients with posterior epistaxis and the only one with a well-defined population. The vast majority of posterior bleeding sites can be identified by endoscopy without general anesthesia. The septum should be examined closely in cases of idiopathic bleeding. PMID 17765763 Otolaryngol Head Neck Surg. 2007 Sep;137(3):390-3. doi: 10.1016/j.otohns.2006.10.035.