Objective  To observe the occurrence of adverse events during recovery period of general anesthesia in preschool children with resection of adenoid hypertrophy (AH) and to analyze its influencing factors.

  Methods  The data of 160 preschool children undergoing elective AH resection was retrospectively analyzed, the occurrence of adverse events in children during the recovery period of general anesthesia was analyzed. Logistic regression analysis was used to screen and determine the influencing factors of adverse events during the recovery period of general anesthesia in preschool children with AH resection, and the possible mechanism was also discussed.

  Results  Among 160 preschool children who undergo elective AH resection, 34 cases occurred adverse events during the recovery period of general anesthesia, accounting for 21.25%. After preliminary comparing the baseline data of children with and without adverse events during the recovery period of general anesthesia and Logistic regression analysis, the results showed that supine position during anesthesia recovery period and use of sevoflurane were the influencing factors of adverse events during recovery period of general anesthesia in preschool children with AH resection (OR>1, P < 0.05), while the use of dexmedetomidine was a protective factor for adverse events in children during the recovery period of general anesthesia (OR < 1, P < 0.05).

  Conclusion  There is a certain risk of adverse events during the recovery period of general anesthesia in preschool children with AH resection, which may be related to supine position during recovery period and use of sevoflurane, while the use of dexmedetomidine may reduce the occurrence of adverse events.