Fig. 3From: Dural sac cross-sectional area is a highly effective parameter for spinal anesthesia in geriatric patients undergoing transurethral resection of the prostate: a prospective, double blinded, randomized studyEvolution of the sensory level over time in two groups, the sensory level were higher from 10 to 135 min after spinal injection in group C than in group U, #P < 0.001Back to article page