Application of Low-dose Muscle Relaxants in Bronchoscopic Interventional Procedures

The purpose of this clinical trial is to observe the use of low-dose muscle relaxants in bronchoscopy intervention surgeries, compared with no muscle relaxants, in terms of the satisfaction of tracheal tube insertion after anesthesia induction, the incidence of laryngospasm, the grading of intraoperative cough and movement, and the recovery of patients after surgery. The main questions it aims to answer are: * How safe and feasible is the use of low-dose muscle relaxants in bronchoscopy intervention surgeries? * Is the muscle relaxant regimen better than the no-muscle-relaxant regimen? Participants will: * During anesthesia induction, the experimental group will use low-dose muscle relaxants for anesthesia, while the control group will not use muscle relaxants for anesthesia. * Record the satisfaction of mask ventilation and the incidence of laryngospasm.

NCT Number	NCT07035301
Lead Sponsor	Harbin Medical University Collaborators: First Affiliated Hospital of Harbin Medical University
Conditions	Disease of Respiratory System
Enrollment	153 participants
Start Date	2025-03-17
Primary Completion	2025-07-31 (estimated)
Study Completion	2025-07-31 (estimated)
Updated on ClinicalTrials.gov	2026-03-03