1) The document evaluates clinical characteristics and methods of anesthesia relating to severe bronchospasm in ENT surgery. It analyzes 17 cases of severe bronchospasm during ENT surgery over 15 years. 2) The majority of cases (13/17) involved patients with tracheal stenosis undergoing tracheostomy under local anesthesia. Most cases (15/17) were caused by stimulation during surgery. 3) Emergency management involved general anesthesia, bronchodilators, and 100% oxygen. Later management included pleural drainage, ventilation, antibiotics, and sedation. Most patients (12/17) recovered fully but 3 died due to delays in management. Early and proper treatment led to full recovery in 2 cases without complications.