Epidural – Everything You Should Know About It

Epidural anesthesia is the most popular method of pain relief during labor. Women request an epidural by name more than any other method of pain relief. More than 50% of women giving birth at hospitals use epidural anesthesia.

As you prepare yourself for “labor day,” try to learn as much as possible about pain relief options so that you will be better prepared to make decisions during the labor and birth process. Understanding the different types of epidurals, how they are administered, and their benefits and risks will help you in your decision-making during the course of labor and delivery.

What Is an Epidural?

Epidural anesthesia is regional anesthesia that blocks pain in a particular region of the body. The goal of an epidural is to provide analgesia, or pain relief, rather than anesthesia, which leads to a total lack of feeling. Epidurals block the nerve impulses from the lower spinal segments. This results in decreased sensation in the lower half of the body.

Epidural medications fall into a class of drugs called local anesthetics, such as bupivacainechloroprocaine, or lidocaine. They are often delivered in combination with opioids or narcotics such as fentanyl and sufentanil in order to decrease the required dose of local anesthetic.

This produces pain relief with minimal effects. These medications may be used in combination with epinephrine, fentanyl, morphine, or clonidine to prolong the epidural’s effect or to stabilize the mother’s blood pressure.

How Is an Epidural Given?

Intravenous (IV) fluids will be started before active labor begins and prior to the procedure of placing the epidural. You can expect to receive 1-2 liters of IV fluids throughout labor and delivery. An anesthesiologist (specialize in administering anesthesia), an obstetrician or nurse anesthetist will administer your epidural.

You will be asked to arch your back and remain still while lying on your left side or sitting up. This position is vital for preventing problems and increasing epidural effectiveness.

  1. An antiseptic solution will be used to wipe the waistline area of your mid-back to minimize the chance of infection. A small area on your back will be injected with a local anesthetic to numb it. A needle is then inserted into the numbed area surrounding the spinal cord in the lower back.
  2. After that, a small tube or catheter is threaded through the needle into the epidural space. The needle is then carefully removed, leaving the catheter in place to provide medication either through periodic injections or by continuous infusion. The catheter is taped to the back to prevent it from slipping out.
  3. You’ll start to notice the numbing effect about 10 to 20 minutes after the first dose of medication, though the nerves in your uterus will begin to go numb within a few minutes. You’ll receive continuous doses of medication through the catheter for the rest of your labor.

Different Types of Epidurals

There are two basic epidurals in use today. Hospitals and anesthesiologists will differ on the dosages and combinations of medication. You should ask your care providers at the hospital about their practices in this regard.

Regular Epidural

After the catheter is in place, a combination of narcotics and anesthesia is administered either by a pump or by periodic injections into the epidural space. A narcotic such as fentanyl or morphine is given to replace some of the higher doses of anesthetic, like bupivacaine, chloroprocaine, or lidocaine.

This helps reduce some of the adverse effects of the anesthesia. You will want to ask about your hospital’s policies about staying in bed and eating.

Combined Spinal-Epidural (CSE) or “Walking Epidural”

A spinal block is sometimes used in combination with an epidural during labor to provide immediate pain relief. A spinal block, like an epidural, involves an injection in the lower back. While you sit or lie on your side in bed, a small amount of medication is injected into the spinal fluid to numb the lower half of the body. It brings good relief from pain and starts working quickly, but it lasts only an hour or two and is usually given only once during labor. The epidural provides continued pain relief after the spinal block wears off.

What Are the Benefits of Epidural Anesthesia?

  • An epidural provides a route for very effective pain relief that can be used throughout your labor.
  • The anesthesiologist can control the effects by adjusting the type, amount, and strength of the medication. This is important because as your labor progresses and your baby moves down into your birth canal, the dose you’ve been getting might no longer be adequate, or you might suddenly have pain in a different area.
  • The medication only affects a specific area, so you’ll be awake and alert during labor and birth. And because you’re pain-free, you can rest (or even sleep!) as your cervix dilates and conserve your energy for when it comes time to push.
  • Unlike with systemic narcotics, only a tiny amount of medication reaches your baby.
  • Once the epidural is in place, it can be used to provide anesthesia if you need a c-section or if you’re having your tubes tied after delivery.

What Are the Risks of Epidural Anesthesia?

  • You have to stay still for 10 to 15 minutes while the epidural is put in, and then wait up to 20 minutes before the medication takes full effect.
  • Epidurals may cause your blood pressure to suddenly drop. For this reason, your blood pressure will be routinely checked to help ensure adequate blood flow to your baby. If there is a sudden drop in blood pressure, you may need to be treated with IV fluids, medications, and oxygen.
  • You may experience a severe headache caused by leakage of spinal fluid. Less than 1% of women experience this side effect. If symptoms persist, a procedure called a “blood patch”, which is an injection of your blood into the epidural space can be performed to relieve a headache.
  • After your epidural is placed, you will need to alternate sides while lying in bed and have continuous monitoring for changes in fetal heart rate. Lying in one position can sometimes cause labor to slow down or stop.
  • You might experience the following side effects: shivering, a ringing of the ears, backache, soreness where the needle is inserted, nausea, or difficulty urinating.
  • You might find that your epidural makes pushing more difficult and additional medications or interventions may be needed, such as forceps or cesarean. Talk to your doctor when creating your birth plan about what interventions they generally use in such cases.
  • For a few hours after the birth, the lower half of your body may feel numb. Numbness will require you to walk with assistance.
    In rare instances, permanent nerve damage may result in the area where the catheter was inserted.
  • Though research is somewhat ambiguous, most studies suggest that some babies will have trouble “latching on” causing breastfeeding difficulties. Other studies suggest that a baby might experience respiratory depression, fetal malpositioning, and an increase in fetal heart rate variability, thus increasing the need for forceps, vacuum, cesarean deliveries, and episiotomies.

How Long Does an Epidural Last?

Once the catheter is in place, the anaesthetist can set up an epidural pump. The pump feeds the epidural solution into the catheter continuously, providing pain relief for as long as needed.

The type, amount and strength of the anaesthetic can be adjusted, as necessary. You might also be given the option of having control of the medication pump. This is called patient controlled analgesia. The amount of painkiller is still regulated, so you can’t accidentally overdose.

You can have the dose lowered for second stage pushing, but it takes some time for the pain relief and numbness to wear off, so if this is important to you, discuss it with your care provider early on.

Common Questions About Epidurals

Does the Placement of Epidural Anesthesia Hurt?

The answer depends on who you ask. Some women describe an epidural placement as creating a bit of discomfort in the area where the back was numbed, and a feeling of pressure as the small tube or catheter was placed.

When Will My Epidural Be Placed?

Typically epidurals are placed when the cervix is dilated to 4-5 centimeters and you are in true active labor.

Can an Epidural Slow Labor or Lead to a Cesarean Delivery (C-Section)?

There is no credible evidence that it does either. When a woman needs a C-section, other factors usually are at play, including the size or position of the baby or slow progression of labor due to other issues. With an epidural, you might be able to feel contractions — they just won’t hurt — and you’ll be able to push effectively. There is some evidence that epidurals can speed the first stage of labor by allowing the mother to relax.

How Can an Epidural Affect My Baby?

As previously stated, research on the effects of epidurals on newborns is somewhat ambiguous, and many factors can affect the health of a newborn. How much of an effect these medications will have is difficult to predetermine and can vary based on dosage, the length of labor, and the characteristics of each individual baby.

Since dosages and medications can vary, concrete information from research is currently unavailable. One possible side effect of an epidural with some babies is a struggle with “latching on” in breastfeeding. Another is that while in-utero, a baby might also become lethargic and have trouble getting into position for delivery.

These medications have also been known to cause respiratory depression and decreased fetal heart rate in newborns. Though the medication might not harm these babies, they may have subtle effects on the newborn.

How Will I Feel After the Placement of an Epidural?

The nerves of the uterus should begin to numb within a few minutes after the initial dose. You will probably feel the entire numbing effect after 10-20 minutes. As the anesthetic dose begins to wear off, more doses will be given–usually every one to two hours.

Depending on the type of epidural and dosage administered, you can be confined to your bed and not allowed to get up and move around.

If labor continues for more than a few hours you will probably need urinary catheterization, because your abdomen will be numb, making urinating difficult. After your baby is born, the catheter is removed and the effects of the anesthesia will usually disappear within one or two hours.

Some women report experiencing an uncomfortable burning sensation around the birth canal as the medication wears off.

Will I Be Able to Push?

You might not be able to tell that you are having a contraction because of your epidural anesthesia. If you can not feel your contractions, then pushing may be difficult to control. For this reason, your baby might need additional help coming down the birth canal. This is usually done by the use of forceps.

Does an Epidural Always Work?

For the most part, epidurals are effective in relieving pain during labor. Some women complain of being able to feel pain, or they feel that the drug worked better on one side of the body.

When Can an Epidural NOT Be Used?

An epidural may not be an option to relieve pain during labor if any of the following apply:

  • You use blood thinners
  • Have low platelet counts
  • Are hemorrhaging or in shock
  • Have an infection on or in your back
  • Have a blood infection
  • If you are not at least 4 cm dilated
  • Epidural space cannot be located by the physician
  • If labor is moving too fast and there is not enough time to administer the d

Questions to Ask Your Healthcare Providers Now and at the Time of Delivery in the Hospital:

  • What combination and dosage of drugs will be used?
  • How could the medications affect my baby?
  • Will I be able to get up and walk around?
  • What liquids and solid foods will I be able to consume?

Want to Know More? Read the Following Articles:

Compiled using information from the following sources:

1. American Academy of Family Physicians


2. William’s Obstetrics Twenty-Second Ed. Cunningham, F. Gary, et al, Ch. 19.

3. Mayo Clinic Guide To A Healthy Pregnancy Harms Roger W., M.D., et al, Part 2.