Effect of ultrasound-guided proximal and distal approach for obturator nerve block in transurethral resection of bladder cancer under spinal anesthesia
Chao Han,1,2 Tieliang Ma,1,2 Daoyun Lei,1 Songhui Xie,1 Zhijun Ge1,21Department of Anesthesiology, The Affiliated Yixing Hospital of Jiangsu University, Yixing, Jiangsu, People’s Republic of China; 2Yixing Clinical College, Medical College of Yangzhou University, Yixing, Jiangsu, People’s Republic of ChinaBackground: Ultrasound-guided p