Pudendal nerve block: (A) S1-3, (B) S2-4, (C) S3-5, (D) S4,5
Answer is B. Pudendal Nerve BlockIt is a peripheral nerve block that provides local anesthesia over S2-4 dermatomes (majority of perineum and inferior quaer of vagina)It does not block the superior bih canal so the mother is able to feel the uterine contractions(Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no.847)