Anesthesia in Labor and Delivery

There are five types of anesthesia used in labor and delivery: local anesthesia, pudendal block, lumbar epidural block, subarachnoid (spinal) block, and general anesthesia.

Local Anesthesia:

• It is used for blocking pain during episiotomy
• It is administered just before the birth of the baby
• The anesthetic has no effect on fetus

Pudendal Block:

• It is administered just before the birth of the baby
• The anesthetic is injected into the pudental nerve through a transvaginal route
• It has effect last about 30 minutes
• It blocks the perineal area for episiotomy
• There is no effect on contraction or the fetus

Lumbar Epidural Block:

• The anesthetic relieves pain from contractions and numbs the vagina and perineum
• The anesthetic is injected in epidural space at L3 to L4 and may cause hypotension, so assess the maternal blood pressure
• The anesthetic is administered after labor is established or just before a scheduled casarean birth
• Keep mother in side-lying position or place a rolled blanket beneath the right hip to displace the uterus from the vena cava
• Administer IV fluids if prescribed
• Increase fluids if hypotension occurs

Subarachnoid (spinal) Block:

• The anesthetic is injected into the spinal subarachnoid space at L3 to L5 and administered just before the birth
• It relieves uterine and perineal pain and numbs the vagina, perineum, and lower extremities
• The anesthetic can cause maternal hypotension and postpartum headache
• Keep mother lie flat for 8 to 12 hours following spinal injection
• Administer IV fluids as prescribed

General Anesthesia:

• General anesthesia may be used for some surgical interventions
• It might cause a danger of respiratory depression and vomiting
• The mother is not awake