Otolaryngologia polska. The Polish otolaryngology
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Induced controlled hypotension is a standard method aimed at decreasing intraoperative bleeding and achieving good operative field conditions. Low hemodynamic parameters during the operation are related to increased risk of brain hypoperfusion and injury to hypoxia-sensitive nerve cells. The purpose of this study was to find the mean arterial pressure (MAP) that preserves good operative conditions at low heart rate (HR) during endoscopic sinus surgery. ⋯ With the stable low heart rate at the minimal physiological values the bleeding in the operative field depends on MAP. Keeping HR around 60 b/min there is no need to decrease the MAP to dangerously low levels to achieve good operative field conditions in great proportion of patients.