Effect of New Peripudendal Block (PPB) in the Second Stage of Labour on Perineal Relaxation and on the Reduction of Episiotomy Rate: A Randomized Control Trial

Figure 4

The difference between the amounts of drug administered for peripudendal block (PPB) and pudendal nerve block (PNB). (a) For peripudendal block (PPB), only 4 ml of local anaesthetic is administered per side, as opposed to the 10 ml of the drug described for conventional pudendal nerve block (PNB). (b) Due to the smaller amount of the drug, there is no risk of vaginal injury when the skull passes through. A smaller amount of local anaesthetic administered is also effective and avoids vaginal injury due to a too large (oversized) protuberance as the skull passes through the cavity.

(a)

(b)