Intraoperative bleeding during endoscopic sinus surgery poses an additional dimension to an already technically challenging surgical approach because of the narrow sinonasal surgical field, single working hand, and the use of endoscopic instruments. Poor visualization is one of the most important factors that increase the risk of intraoperative complications such as inadvertent injury to major vessels and nerves, and incomplete surgery. This article provide a logical approach to improving the surgical field, minimizing risk of inadvertent vascular injury, and managing intraoperative bleeding.
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