Comparison of sedative effects of remiazolam and music intervention on patients undergoing transurethral resection of prostate under spinal anesthesia: a prospective randomized controlled study

INTERVENTION: control group:Music intervention;experimental group 1:Remidazolam;experimental group 2:Remidazolam combined with music;blank group:None; CONDITION: Prostatic hyperplasia PRIMARY OUTCOME: Bispectral index; SECONDARY OUTCOME: Age;Weight;Height;Body mass index;ASA classification;Systolic pressure;Diastolic pressure;Mean arterial pressure;Heart rate;Oxygen saturation;Total dosage of remidazolam;Departure time;Awakening time;Satisfaction;Cognitive function;Anxiety;Hypoxemia;Nausea;Vomit;Respiratory depression;Operation duration;Puncture space;Dosage of ropivacaine; INCLUSION CRITERIA: 1. Patients undergoing electroprostatectomy for the first time under elective intraspinal anesthesia; 2. Aged 60‐80 years; 3. Body mass inde X(BMI) 18.5‐30kg/m^2; 4. ASA grade I‐III; 5. Voluntary signing of informed consent.