Epidural Analgesia During Labor: What Every Mother Should Know

In short: An epidural numbs the nerves supplying the uterus and lower body and greatly relieves the pain of labour. It is usually given when the cervix is 3–5 cm open and works within 5–10 minutes. It may lengthen the second stage a little and make a vacuum delivery more likely, but it does not prevent vaginal birth. Temporary effects are low blood pressure and difficulty passing urine; it is not given with bleeding, fever, clotting disorders or infection at the injection site.

Giving birth is one of life’s most powerful experiences, and pain relief options like epidural analgesia can help make labor more comfortable and manageable. Below, we explain when an epidural may be recommended, how it works, and what to expect — so you can discuss your options confidently with your obstetric care team.

When Is Lumbar Epidural Analgesia Recommended?

Your doctor may suggest an epidural in several situations, including:

• Pain relief during labor
• Pre-eclamptic toxaemia (high blood pressure disorders of pregnancy)
• High-risk fetal group
• Breech delivery or twin delivery
• Trial of prolonged labor
• Patient request
• Symptomatic heart disease
• Respiratory disease
• Cerebrovascular disease
• Abnormal or non-viable fetus
• Incoordinate uterine action

Prerequisites for an Epidural

Before an epidural is given, your care team will check several important factors to ensure your safety and your baby’s wellbeing:

• Maternal consent
• Maternal and fetal status
• Progress of labor
• Nursing support
• IV bolus (fluids given before the procedure)
• Blood pressure monitoring
• Continuous fetal monitoring
• Catheter placement
• Safety checks
• Assessment of muscle strength/weakness

What Is Epidural Analgesia?

Epidural analgesia is widely considered one of the most effective methods of pain relief during labor.

• A combination of opioids with low-concentration local anesthetics can provide effective pain relief while reducing unwanted side effects, such as excessive motor block (heaviness or weakness in the legs).

Advantages of Epidural (Extradural) Analgesia Over Spinal Block

• Lower risk and severity of maternal low blood pressure
• Lower incidence of post-puncture headache and serious neurological complications
• Considered a safer option for continuous pain relief compared to a single spinal injection

Different Techniques of Epidural Analgesia

Lumbar Epidural Block

1. Standard block, covering nerve segments T10 to S5

      A. Single dose

      B. Continuous technique: repeated injections through a catheter

2. Continuous segmental block

      A. Initially segmental T10 to L1 block

      B. Extended to sacral segments during the second stage

Caudal Block

• Single dose
• Continuous technique
• Double catheter technique
• Upper catheter for segmental block
• Lower catheter for sacral block

Advantages of Epidural Analgesia

• Provides superior pain relief during the first and second stages of labor
• Makes it easier for the mother to cooperate and stay comfortable during labor and delivery
• Provides anesthesia for episiotomy or forceps delivery, if needed
• Can be extended to provide anesthesia for a cesarean delivery, if required
• Helps avoid opioid-related respiratory depression in both mother and newborn

How Does Epidural Anesthesia Work?

• An epidural blocks the nerve roots leading to the uterus and lower half of the body. These nerve roots are located in a space near the spinal cord called the epidural space, which lies within the spine, just outside the outer covering of the spinal cord.

Understanding the Epidural Block

• A continuous block
• Located between the dura mater and the ligamentum flavum
• Does not enter the cerebrospinal fluid (CSF) space
• The initial bolus dose requires monitoring for low blood pressure
• Position changes are encouraged frequently for comfort and safety
• Respiratory depression may occur if narcotics are used

When Epidural Analgesia May Not Be Suitable

• Patient declines the procedure
• Active maternal hemorrhage
• Maternal sepsis or untreated fever/infection
• Infection at or near the needle insertion site

• Maternal coagulopathy (inherited or acquired blood clotting disorders)
• Anatomical considerations of the epidural space are carefully assessed
• Correct patient positioning is essential for safe epidural catheter placement

Epidural Procedure Performed by Dr. Najeeb Layyous in 1982

Anatomical Considerations

• Pain in early first stage of labor: nerve segments T10 – L1
• Pain in late first stage and second stage: T10 – L1 and S2 – S4

Understanding Labor Pain (First Stage)

Labor pain in the first stage is caused by:

• Distention of the lower uterine segment
• Mechanical dilation of the cervix
• Stretching of pain-sensing nerve fibers due to uterine muscle contractions

Timing Considerations for an Epidural

• An epidural can be given at any stage of labour when the mother requests it; there is no need to wait until the cervix reaches a particular dilation
• Whenever the mother requests pain relief, including in early (latent) labor if the pain is severe

Epidural Anesthetic Agents

• Lidocaine (1–2%) is commonly used for short or intermediate-acting effect
• Bupivacaine and ropivacaine are used for longer-acting effect; for labor pain relief they are given in low concentrations (for example bupivacaine 0.0625–0.1%, usually combined with fentanyl), while stronger solutions are reserved for cesarean section (bupivacaine 0.75% is not used in pregnancy)

Regarding dosing:

• The typical adult dose is about 1–2 ml per segment for anesthesia; doses may be reduced with advancing pregnancy or maternal age, and increased with taller height
• A smaller repeat dose (roughly one-third to one-half of the initial dose) may be given again if needed
• A test dose (3–5 ml) is given first to confirm correct placement
• Opioids (such as morphine 2–5 mg or fentanyl 0.05–0.1 mg) may be combined with local anesthetics to improve pain relief

Possible Complications of Epidural Analgesia

Immediate complications may include:

• Low blood pressure (systolic blood pressure below 100 mmHg, or a drop of 25% from baseline)
• Difficulty urinating (urinary retention)
• Convulsions related to local anesthetic (rare)
• Cardiac arrest related to local anesthetic (rare)

Delayed complications may include:

• Post-dural puncture headache (a headache that is worse when sitting or standing)
• Temporary backache
• Epidural abscess or meningitis (very rare)
• Permanent neurological deficit (extremely rare)

Possible Effects on the Baby

• Maternal low blood pressure, if not corrected promptly (within a few minutes), may affect the baby’s heart rate and oxygen supply
• Maternal fever associated with epidural use may sometimes lead to additional precautionary tests for the newborn

Summary of Lumbar Epidural Complications

• Headache or backache
• Bleeding (rare)
• Respiratory depression
• Urinary retention
• Infection (rare)
• Effects on the baby from local anesthetics; total spinal block (rare)
• Convulsions related to local anesthetic (rare)
• Cardiac arrest related to local anesthetic (rare)
• Epidural abscess or meningitis (very rare)
• Permanent neurological deficit (extremely rare)

Combined Spinal-Epidural Anesthesia

• Also known as the “needle-through-needle” technique
• First introduced in the 1980s
• An epidural needle is inserted, then a spinal needle is passed through it into the subarachnoid space to deliver an opioid or local anesthetic. The needle is then withdrawn and an epidural catheter placed for additional doses as needed.

• Opioids given into the spinal fluid or epidural space can help manage pain during the first stage of labor
• A local anesthetic is generally needed for the second stage of labor
• A combination of sufentanil and bupivacaine may help manage pain throughout labor while minimizing motor block, and may be associated with shorter labor and fewer instrumental deliveries

Why Might a Combined Technique Be Preferred?

• Faster onset of pain relief
• Lower anesthetic levels in maternal and fetal blood
• More effective motor block if a cesarean delivery becomes necessary
• Confirms correct placement of the epidural catheter
• Allows flexibility to extend pain relief or anesthesia — for example, from a trial of forceps to a cesarean delivery, if needed
• Allows use of different pain-relief medications after delivery, if needed

Combined Spinal-Epidural: Practical Considerations

• Confirming the epidural catheter position helps reduce the risk of accidental dural puncture
• May be less suitable if labor progresses very quickly, since the epidural catheter’s function has not yet been fully tested in case of an urgent need for cesarean delivery

Possible Complications of Spinal Anesthesia

• Low blood pressure, due to sympathetic nerve block — managed with positioning, IV fluids, and medications such as ephedrine as directed by the anesthesia team
• Total spinal block (rare) — related to overdose, with symptoms such as severe low blood pressure, breathing difficulty, and in rare cases cardiac arrest
• Post-puncture headache — occurs in a small percentage of cases; using smaller needles, remaining flat for a period after the procedure, and avoiding multiple attempts can help reduce this risk
• Convulsions — related to changes in cerebrospinal fluid pressure (rare)
• Temporary bladder dysfunction
• Increased blood pressure when oxytocic medications are used after delivery, seen somewhat more often with regional anesthesia
• Arachnoiditis and meningitis — historically linked to preservatives in older anesthetic formulations; now extremely rare with modern practice

How Epidural Analgesia May Affect Labor and Delivery

• Generally does not affect the overall course of labor

An epidural does not increase the chance of needing a cesarean section, and it does not cause long-term back pain.

• May increase the likelihood of instrumental delivery
• May prolong the second stage — allowing the baby’s head to descend and emerge gradually, as long as fetal heart monitoring remains reassuring
• May slightly increase the chance of the baby’s head being in a less favorable position, due to reduced pelvic floor muscle tone
• With an epidural, it is usually advised to wait about an hour after full dilation before active pushing (unless you feel a strong urge or the baby’s head is visible), as pushing too early can tire the mother
• Once full dilation is reached, the baby’s head is often allowed to descend, rotate, and flex naturally before active pushing begins
• Because the epidural reduces sensation, extra time may be needed for the mother to feel ready to push effectively as the head reaches the pelvic floor
• Patience is often recommended at this stage — the second stage with an epidural can last up to about 3 hours for first-time mothers and up to about 2 hours for mothers who have given birth before, as long as mother and baby remain well

Ways to Help Reduce the Chance of Instrumental Delivery

• Using a low-dose epidural that is continued through the second stage (stopping the epidural at full dilation does not reduce instrumental delivery and only increases pain)
• Using the lowest effective dose of local anesthetic as the first stage nears completion
• Allowing natural, spontaneous descent of the baby’s head rather than urging immediate pushing at full dilation
• Research suggests there is generally no meaningful difference in newborn wellbeing (Apgar scores) between babies delivered after a period of spontaneous descent versus early instrumental delivery
• Active, supportive management of the second stage of labor
• Ensuring effective, coordinated uterine contractions
• Encouraging the mother to push in coordination with contractions
• Using a more selective (segmental) epidural technique that maintains perineal sensation while preserving pelvic floor muscle tone
• Broader caudal or lumbar epidural coverage may reduce the natural urge to push, which can increase the likelihood of instrumental delivery
• A segmental epidural targeted around the T10–T12 level may help preserve the natural bearing-down reflex
• Combining analgesics with the anesthetic can allow a lower anesthetic dose, helping reduce motor block and related side effects

If you have questions about pain relief options during labor, our team at Dr. Najeeb Layyous’s clinic is happy to discuss what may be most appropriate for your individual pregnancy and delivery plan.

Dr Najeeb Layyous F.R.C.O.G

Consultant Obstetrician, Gynecologist and Infertility Specialist