严重鼻出血是指较短期发生的持续或频繁发作的中等量甚至大量的鼻出血〔1〕。其特点是出血凶猛,短时间内失血量成人在2 0 0ml以上。多是由鼻腔中后段的小动脉或静脉破裂所致,是耳鼻咽喉科常见的危重症之一。快而有效地止住鼻出血是防治休克的关键。从1 998年起,我科在内镜下用 Severe epistaxis refers to the short-term sustained or frequent episodes of moderate or even large amounts of epistaxis 〔1〕. It is characterized by fierce bleeding, blood loss in a short time more than 2 0 0ml. Mostly caused by ruptured arterioles or veins in the posterior segment of the nasal cavity and is one of the common critically ill diseases of otolaryngology. Quickly and effectively stop bleeding nose is the key to prevention and treatment of shock. Since 1998, our department is under endoscopy