Abstract
Bladder cancer is the most common malignancy of the urinary system, and accounts for 3% of newly diagnosed tumors. Transurethral resection of bladder tumor plays a key role in treating bladder cancer, among which one of the most serious complications is bladder perforation caused by obturator nerve reflex. Obturator nerve reflex can be prevented by inducing obturator nerve block after lumbar anesthesia. However, No study so far has compared the inhibitory effect of different obturator nerve block approaches on intraoperative obturator nerve reflex and bladder perforation. In this study, we conducted a network meta-analysis (NMA) of studies comparing the efficacy of different obturator nerve block approaches performed after lumbar anesthesia in operation. The distal obturator nerve block guided by peripheral nerve stimulator is the best approach for preventing obturator reflex. The proximal obturator nerve block guided by ultrasound is the best approach for preventing bladder perforation. Spinal anesthesia combined with the distal obturator nerve block guided by peripheral nerve stimulator is the most optimal approach to prevent the obturator nerve reflex. But the doctor should choose the appropriate anesthesia method according to the patient's general condition, tumor location, and doctor's proficiency in puncture techniques.
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