Spinal anesthesia is optimal choice for transurethral resection of the prostate (TURP), but the sensory\nblock should not cross the T10 level. With advancing age, the sensory blockade level increases after spinal injection\nin some patients with spinal canal stenosis. We optimize the dose of spinal anesthesia according to the decreased\nratio of the dural sac cross-sectional area (DSCSA), the purpose of this study is to hypothesis that if DSCSA is an\neffective parameter to modify the dosage of spinal anesthetics to achieve a T10 blockade in geriatric patients\nundergoing TURP.\nMethods: Sixty geriatric patients schedule for TURP surgery were enrolled in this study. All subjects were\nrandomized divided into two groups, the ultrasound (group U) and the control (group C) groups, patient\nreceive either a dose of 2 ml of 0.5% isobaric bupivacaine in group C, or a modified dose of 0.5% isobaric\nbupivacaine in group U. We measured the sagittal anteroposterior diameter (D) of the dural sac.................
Loading....