Information About Labor Epidural Analgesia (LEA) This information was written by the Maternity Education Department of Martha Jefferson Hospital under the direction of Burkhard Spiekermann, MD, anesthesiologist. 1. What is LEA? LEA, more commonly called a "labor epidural," or simply an "epidural" is one of many options for pain control (analgesia) during labor. It is achieved by injecting pain medicine directly into the epidural space of the lower back via a small plastic catheter, which is typically left in place so that additional medication can be administered through it throughout labor.
2. What is the difference between a spinal and an epidural? Although they are very similar means of administering pain medication, a spinal and an epidural have important differences that dictate when and why they should be used. Because the epidural's catheter allows for a continuous infusion of analgesic over time, this procedure is typically chosen for pain relief during the course of labor. A spinal however, usually involves a single, one-time, dose of anesthetic, which is injected beyond the epidural space into the subarachnoid space. Whereas an epidural takes effect gradually over a 10-15 minute period, and lasts throughout labor, a spinal takes effect almost immediately but is shorter acting. There is one type of spinal, called a saddle block that can be used just before the delivery of your baby for effective short-term pain relief. 3. What is a "walking epidural" and can I get one at Martha Jefferson? A walking epidural (sometimes called "CSE,"- combined spinal epidural analgesia) is the combination of a spinal injection of a narcotic drug with the placement of an epidural catheter. It can be used in the early stages of labor, when walking may help ease the discomfort of contractions. The spinal narcotic treats contraction pain early on, but, unlike the medication of a traditional epidural, will not weaken your leg muscles or cause uncoordination, thus allowing you to walk safely. Currently, most of the epidurals placed at MJH are traditional. You should talk to your anesthesiologist before the onset of labor if you are interested in a walking epidural. 4. If I have had other pain medication during labor, can I still get an epidural? Yes. It is very common to have received intravenous or intramuscular pain medication before an epidural. 5. Are there physical or medical conditions that would prevent someone from getting a labor epidural? Yes. Underlying back problems like spina bifida or spina bifida occult are absolute contraindications to LEA. Previous lower back surgery and severe scoliosis can make placement of LEA more complicated and, in some cases, impossible. Other contraindications for LEA include; brain tumors or conditions that cause an increase in intracranial pressure, infection at the intended puncture site, allergies to a specific class of local anesthetics, certain blood thinner medications (excluding aspirin or ibuprofen-like drugs), and certain medical conditions that prevent your blood from clotting properly. Chronic back pain, progressive neurological diseases (for example multiple sclerosis), blood infection, and preexisting neurological deficits in your back or legs could also be contraindications to LEA. Your anesthesiologist will take your complete medical history and any questions you have about specific medical problems and LEA. 6. Is there a "window of opportunity" for getting an epidural or can I get one any time? The "window of opportunity" depends mostly on your obstetrician, family doctor, or nurse midwife. In general, if you already have your mind set on wanting LEA for pain control, it makes sense to place it as soon as a regular active labor pattern is established. Even if the labor pain is still tolerable at this point, once the LEA is in place and you become more uncomfortable, it is fairly easy to dose the catheter appropriately to your comfort. If you are unsure whether you want LEA or not, you can wait and see how you feel with progression of labor. Most often catheters are placed before your cervix is more than 6 cm dilated. However, even in the late stages of cervical dilation, especially if this is your first baby and the actual pushing phase of labor may take longer, it is possible to place an epidural. 7. What kind of relief can I expect from a labor epidural? A labor epidural is designed to give you relief from the pain caused by your contractions and the pain of delivering your baby, as it moves through the birth canal. Once the LEA takes effect, a few contractions after insertion, most women describe their contractions as "pressure" sensations rather than pain. At times, the LEA may be more effective on one side of your body than the other. Some women may have a "hot spot," which is a circumscribed area, usually on one side of your lower abdomen that is not completely comfortable. Usually, additional small doses of local anesthetic or short-acting narcotic drug delivered via the epidural catheter will improve these areas of discomfort. There are times though, when, for no apparent reason, a "perfectly good" LEA does not provide effective pain relief. In rare instances the epidural catheter may work itself out of the epidural space and need to be replaced. 8. Can an epidural affect my ability to push? Under certain circumstances, pushing may not be as effective. First, let me say that discussions concerning the effect of LEA on pushing ability, prolongation of labor, instrument-assisted vaginal delivery, and rates of Cesarean section are ongoing and very controversial, and the research is inconclusive. The circumstances which most people agree to that may affect your ability to push are: a) if the medication makes you too comfortable so that you can't feel your contractions at all, it may be hard to coordinate your pushing efforts with your contractions. b) if too much local anesthetic is administered, your pelvic and abdominal muscles may become somewhat weakened, and less effective at pushing. These are the reasons why the effectiveness and the degree of anesthesia from LEA are frequently reassessed throughout labor. 9. What are the potential side effects and complications for myself from an epidural? The most common side effect is the transient soreness you may feel in your back where the epidural was placed. This is similar to the discomfort you may have from the IV needle in your arm. The procedure is done in a sterile fashion and the infection rate is extremely low. Any significant bleeding from LEA is rare. There is a 1-3% incidence of what's often called a "spinal headache" after LEA. A spinal headache usually occurs the next day and it worsens whenever you try to sit up or stand. Most spinal headaches get better on their own or can be treated with ibuprofen, intravenous fluids, and caffeine. Infrequently, some patients with severe or persistent headache may require an "epidural blood patch", in which a small amount of the patient's own blood is injected through an epidural needle into the epidural space. LEA often causes a small transient drop in blood pressure, which is normal. If your blood pressure changes too much, you may start to feel dizzy or nauseated. This is infrequent and your blood pressure will be monitored closely during the procedure. If it decreases significantly your anesthesiologist will treat it with medication. Up to 15% of women may develop a fever during labor. The reason for this is unclear and may be related to dehydration. The temperature elevation is not associated with an increased risk of infection in both the mother and the child. Allergic reactions to local anesthetics or the narcotic used for LEA are rare (less than 1%). Sometimes the narcotic in the LEA can cause you to have itching. At times, women become dizzy or feel like they are passing out when the LEA is placed because of hyperventilation with contractions or nervousness about the procedure. The best protection from this reaction is proper communication between you, your nurse, and your anesthesiologist. Rare complications are: a. Too much of the local anesthetic is accidentally injected into a blood vessel. You may feel lightheaded, develop a seizure, (incidence less than 1 in 9.000) or have problems with heart rhythm irregularities (incidence less than 1 in 10.000). This is why your anesthesiologist is very careful when injecting the medication and why he/she only injects small amounts at a time. b. The local anesthetic goes into the spinal space instead of the epidural space and you may have an "accidental spinal block". If this is not recognized, breathing problems may develop from a high spinal block. Again, this is an extremely rare complication (incidence less than 1 in 8000). c. Nerve injuries after LEA are extremely rare and have not been reported at MJH (less than 1 in 40.000 to 1 in 200.000 in large studies). Transient nerve injuries after vaginal delivery are likely due to the birthing process itself. 10. If a needle is going in my back, could I be paralyzed for life? For good reason, one of the biggest concerns involves being "paralyzed for life" when having LEA. However, the catheter is placed in an area of your back below the termination of your spinal cord. Even if the epidural needle should go too far into your back, it would not contact your spinal cord. If a blood clot should develop in your epidural space and go unrecognized, the pressure from the blood clot could be cause for nerve damage. Because such an epidural hematoma is a potentially troublesome complication, LEA is contraindicated in anyone whose blood does not clot properly (see question #5). Your anesthesiologist reviews your chart carefully and looks for any laboratory reports that indicate such a problem. In addition, when talking to you, she/he will probably ask you if you bruise or bleed easily. An epidural abscess from an infection could potentially also cause spinal cord or nerve damage but again, this is extremely unlikely. Overall, spinal cord or nerve injuries from epidurals are a rare occurrence (see question #9). Most reported cases occurred in patients with severe underlying medical problems and risk factors. 11. I have heard that you can get permanent back pain from an epidural. Is that true? No. Although it seems logical to ascribe back pain following an epidural to the "needle in your back", the incidence of prolonged back pain after vaginal delivery is the same both in patients who had LEA and in those who did not. Back pain is most likely the result of pregnancy and the delivery process. 12. What effect does the epidural have on my baby? There should be no negative effects on the baby. The amount of medication needed for LEA is small and the drug concentration in your bloodstream very low. Only very minute quantities of the medication will cross the placenta and enter the baby's circulation. Some researchers are actually suggesting there may be a positive effect of LEA on the baby: with good pain control and a therefore a "relaxed" mother, blood flow to the placenta can increase which in turn means oxygen supply to the baby is improved. If complications related to LEA adversely affect the mother (see above), secondary effects may also be seen in the baby. 13. I have heard that there are problems with breastfeeding after an epidural. Is this true? Opinions on this differ. Although there are some studies that suggest LEA may cause a decrease in the amount of breastfeeding in the first 24 hours and lactation consultants may feel that LEA influences breastfeeding, several other studies did not support these results. On the other hand, research consistently shows that the intravenous administration of pain medication during labor does seem to decrease the amount of breastfeeding during the first hours after birth. Selected References: 1. Welcome to pain free childbirth - Labor epidural anesthesia: www.painfreebirthing.com 2. Epidural Pain Relief During Labor Does Not Increase Chance of Cesarean Delivery: www.nichd.nih.gov/new/releases/epidural.cfm 3. PRO/CON Clinical Forum-Epidural Anesthesia and Labor Outcome: www.soap.org/archives/epilabor.html 4. Old Pueblo Anesthesia Home Page: www.opatucson.com/mo_labr.html 5. Medical Progress: Regional Anesthesia and Analgesia for Labor and Delivery. Eltzschig H. K., Lieberman E. S., Camann W. R. N Engl J Med 2003; 348:319-332, Jan 23, 2003. [Back to Top] |