The aim of this clinical trial is to compare the intraoperative use of neuromuscular blocking agents and other anesthetic drugs between tubeless spontaneous ventilation anesthesia (TSVA) and conventional endotracheal intubation (ETT) anesthesia in kidney transplantation. The study will also evaluate the safety, stability, and postoperative recovery associated with TSVA. This trial is designed to address the following questions: * Does TSVA reduce the intraoperative requirement for neuromuscular blocking agents and other anesthetic medications? * Does TSVA improve postoperative outcomes in kidney transplant recipients? * How do the intraoperative safety and stability of TSVA compare with those of ETT anesthesia? Researchers will compare anesthetic drug consumption, intraoperative anesthetic performance, and postoperative recovery outcomes between the TSVA and ETT groups to determine whether TSVA can decrease anesthetic drug use and enhance patient recovery. Participants will: * Undergo a complete preoperative assessment * Receive kidney transplantation under TSVA or ETT anesthesia, with relevant intraoperative data recorded * Receive tubeless postoperative management, with documentation of pain scores, complications, and recovery of graft function * Be followed throughout their lifetime after discharge, providing long-term follow-up information
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
60
1. Pre-anesthesia induction: Midazolam 2-3 mg intravenous injection. 2. Laryngeal mask insertion: After spontaneous breathing stabilizes, select an appropriate size laryngeal mask for insertion. 3. Anesthesia depth monitoring: Maintain Bispectral Index (BIS): 40-60. 4. Anesthesia induction and maintenance: Continuous intravenous infusion of Propofol 0.5-2.0 mg/ml (TCL mode), Dexmedetomidine. 5. Analgesia: Sufentanil initial dose, Remifentanil maintenance analgesia. 6. Muscle relaxant: Cisatracurium initial dose 2-10 mg, to reduce abdominal muscle tension without excessively suppressing spontaneous breathing. Additional doses may be given during surgery based on the situation. 7. Intraoperative monitoring: Continuous monitoring of ECG, heart rate, invasive blood pressure, SpO₂; intermittent monitoring of end-tidal CO₂, tidal volume, fraction of inspired oxygen during airway patency; regular arterial blood gas analysis.
1. Pre-anesthesia induction, anesthesia maintenance, and analgesic medication are consistent with the TSVA group. 2. Muscle relaxant: Conventional protocol (induction dose: 0.2 mg/kg, supplemental dose: 4-6 mg every 40 minutes). Additional muscle relaxants are intermittently administered later based on intraoperative muscle relaxation effect and patient response to stimulation. 3. After successful endotracheal intubation, connect to the anesthesia machine for continuous mechanical ventilation (tidal volume 6-8 ml/kg). 4. Anesthesia depth monitoring: Maintain Bispectral Index (BIS): 40-60. 5. Intraoperative monitoring: Continuous monitoring of ECG, heart rate, invasive blood pressure, SpO₂; intermittent monitoring of end-tidal CO₂, tidal volume, fraction of inspired oxygen during airway patency; regular arterial blood gas analysis.
Intraoperative Muscle Relaxant Usage
Total dosage of cisatracurium administered intraoperatively, including induction dose and supplemental doses.
Time frame: During surgery (intraoperative intervals, and end of anesthesia)
Intraoperative Sedative and Analgesic Drug Usage
Total amount of sedatives (e.g., propofol, dexmedetomidine) and analgesics (e.g., remifentanil, sufentanil).
Time frame: During surgery (intraoperative intervals, and end of anesthesia)
Anesthetic Depth (BIS Monitoring)
Bispectral Index (BIS) values to assess adequacy of anesthetic depth, 0-40: Deep sedation or unconscious state (e.g., maintenance phase of general anesthesia); 40-60: Ideal range for general anesthesia (commonly used in surgery); 60-90: Mild to moderate sedation or gradual awakening; 90-100: Fully awake.
Time frame: During surgery (intraoperative intervals, and end of anesthesia)
Intraoperative Ventilation Effect
Arterial PaO₂: Normal PaO2 values: 80-100 mmHg PaO2 60-80 mmHg: Mild hypoxia PaO2 45-60 mmHg: Moderate hypoxia PaO2 \< 45 mmHg: Severe hypoxia Arterial PaCO₂: PaCO₂ 35-45 mmHg, normal value PaCO₂ \< 35 mmHg, hypocapnia PaCO₂ \> 45 mmHg, hypercapnia
Time frame: Intraoperative key time points (e.g., post-induction, during operation, end of operation)
Intraoperative Hemodynamic Stability
Invasive arterial pressure variability/Blood pressure fluctuations at key time points
Time frame: During surgery (intraoperative intervals, and end of anesthesia)
Operation and Anesthesia Duration
This outcome measure is primarily used to record the duration of surgery and anesthesia for each patient, and to compare whether the two anesthesia methods affect the surgical process.
Time frame: During surgery (intraoperative intervals, and end of anesthesia)
Postoperative Awakening and Recovery Time
Time to awakening and recovery of consciousness sufficient for extubation/LMA removal. From end of anesthesia to extubation/LMA removal
Time frame: Perioperative/Periprocedural
Perioperative Pain Scores
Visual Analog Scale (VAS) Score range: 0-10, a score of 0 indicates no pain, while a higher score indicates a greater degree of pain. Prince-Henry Score (thoracoabdominal pain) Score range: 0-4 0: No pain when coughing 1. Pain when coughing 2. No pain at rest, pain when taking deep breaths 3. Mild pain at rest, tolerable 4. Severe pain at rest, unbearable
Time frame: up to 24 hours post operatively
Postoperative Pulmonary Complications
Hypoxemia, Atelectasis, Pneumonia, Respiratory distress, etc.
Time frame: From intraoperative to three months postoperatively
Non-Pulmonary Complications
Hoarseness, Vocal cord paralysis, Nausea/vomiting, Arrhythmia, Delirium, etc.
Time frame: From intraoperative to three months postoperatively
Serum creatinine
Unit: μmol/L
Time frame: Postoperative day 1-90
Estimated GFR
Male Ccr = \[(140 - age) × weight (kg)\] / \[0.818 × Scr (umol/L)\] Female Ccr = \[(140 - age) × weight (kg)\] / \[0.818 × Scr (umol/L)\]\*0.85
Time frame: Postoperative day 1-90
Urine output
24-hour total urine output
Time frame: up to 7 day post operatively
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