<prompt> For operative vaginal delivery, what is the level of sensory block needed to cover pain?T10-L1T10-S1L1-S1S2-S4  <response>: Vaginal delivery :The first stage of labor requires a sensory block to the level of the umbilicus . During the second stage of labor and for operative vaginal delivery, a sensory block of S2 through S4 is usually adequate to cover pain from perineal stretching andor instrumentation. Ref: Williams Obstetrics; 25th edition 