59
Participants
Start Date
February 1, 2021
Primary Completion Date
January 31, 2022
Study Completion Date
January 31, 2022
General anesthesia with preservation of spontaneous breathing
non-intubation group, thoracic paravertebral nerve block was performed before anesthesia induction,when the BIS value drops to between 40 and 60, laryngeal mask airway(LMA) is placed,and observation of breathing
Affiliated People's Hospital of Jiangsu University, Zhenjiang
Zhenjiang First People's Hospital
OTHER