The effect of mivacurium chloride-induced conditions on thyroid surgery intubation and intraoperative nerve monitoring

INTERVENTION: Mivacurium group:Mivacurium injection, 0.20 mg/kg intravenous infusion;Rocuronium group:Rocuronium injection, 0.30 mg/kg intravenous infusion; CONDITION: Thyroid disease (patients requiring elective thyroid surgery under general anesthesia, with planned use of intraoperative nerve monitoring) PRIMARY OUTCOME: Excellent intubation condition rate; SECONDARY OUTCOME: Blood pressure and heart rate before/during/after intubation;Quality of Recovery‐15 score at 24h and 48h postoperatively;Consumption of anesthetics and vasoactive drugs;Incidence of adverse reactions;First‐attempt intubation success rate;Time from neuromuscular blocker injection to first positive EMG signal; INCLUSION CRITERIA: 1. Voluntarily signs the informed consent form; 2. Patients aged 18‐65 years, ASA I‐II, with a BMI of 18.5‐24.9; 3. Patients scheduled for thyroid surgery under general anesthesia; 4. Patients planned to use intraoperative neuromonitoring.