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d 25 in the subglottis. All patients were confirmed by radiographic examination or pulmonary auscultation. All their medical records and clinical data were retrospectively analyzed; single factor and multiple factor analyses of bronchospasm were performed. The logistic regression analysis showed that age, foreign body retention time and operation time were independent risk factors for postoperative airway spasm. A history of pneumonia was not an independent risk factor for postoperative airway spasm. We should pay more attention in the