Drugs for Labor Pain

 

I'm scared of labor. What can I take for the pain?
No one finds the experience easy--it isn't called labor for nothing--but the intensity of the discomfort ranges widely from woman to woman and birth to birth.

Fortunately, you can do a lot to ease the pain. First be aware that the more you can relax, the less pain you'll feel. That said, many women find this information fairly useless. Still, it can't hurt to study up on relaxation techniques and effective positions for labor. Acupuncture and acupressure can also ease the pain.

Finally, there are a variety of medications that will dull the pain.

What drugs are available?
Dozens of medications, divided into two broad categories, will take the edge off labor pains: systemic medications, which relax you, and regional analgesics, which reduce pain only in specific parts of your body.

Systemic medications
Systemic medications are sedatives, tranquilizers, and narcotics. They are most often given as injections or added to an intravenous (IV) line, entering your bloodstream and affecting your entire body.

Systemic medications, such as Demerol, can cause a variety of side effects, such as drowsiness, dizziness, nausea, and disorientation. Since they cross the placenta, some experts believe they may initially make a baby sleepy or harder for him to nurse and breathe well.

Regional analgesics
Regional analgesics, such as epidurals and spinal blocks, reduce sensation in specific parts of the body. They allow you to stay awake and participate in labor and birth without feeling pain. The medication generally doesn't affect the
fetus directly. However, in most cases, regional analgesics prevent you from standing up and both you and the baby will require more monitoring devices once you've taken the drug.

What's an epidural?
An epidural block is a kind of regional analgesic. An anesthesiologist or nurse-anesthetist injects the drug into the space just outside the dura--the sac membrane that surrounds the spine. You lie curled on your side, or sit on the edge of the bed for the injection. The anesthetist passes a catheter, a very thin, flexible hollow tube, through the needle, then withdraws it and tapes the catheter in place so he can add medication through it as needed.

Advantages:

• The pain relief will last throughout your labor.

• The anesthetist can control the effects by adjusting the type and strength of the medication.

• You will be awake and alert during labor and can rest during dilation, which means you may have more energy when it comes time to push the baby out.

Disadvantages:

• You have to stay in an awkward position for five to ten minutes, then wait another ten to 20 minutes before the medication takes full effect.

• The loss of sensation may make it harder to push the baby out.

• You may get only spotty pain relief.

• The drug may temporarily lower your blood pressure, resulting in decreased blood flow to your baby, slowing his heart. (This is treated with fluids and medication.)

• In less than 2 percent of cases, an epidural results in a bad headache. More rarely, it causes nerve injury or infection. * Some studies suggest that women who use epidurals are more likely to need a cesarean section or to have their babies pulled out with forceps or suction. However, epidural techniques have improved, and more recent studies show women are now having these problems only rarely.

What's a spinal block?
A spinal block is a type of regional analgesic. An anesthetist injects the drug into the dura, where it then enters the fluid surrounding the spinal cord and reduces sensation from the waist down. Spinals differ from epidurals in that no catheter is used, so the medication can be given only once. The pain relief lasts only a few hours, so anesthetists also give some form of painkiller. Occasionally doctors order a spinal block late in labor and sometimes just before a
forceps delivery.

Advantages:

• Pain relief is rapid.

Disadvantages:

• You have to hold an awkward position for five to ten minutes while being injected.

• The loss of sensation may make it harder to push the baby out.

• In rare cases, the drug may temporarily lower your blood pressure, resulting in temporary decreased blood flow to your baby, slowing his heart. (This is treated with fluids and medication.)

• In about 1 percent of cases, using the drug results in a bad headache. Even more rarely, it results in nerve injury or infection.

Tell me about a combined spinal/epidural block.
A combined spinal/epidural block is a relatively new technique that offers the rapid pain relief of a spinal combined with the continuous relief of the epidural. In early labor this technique allows you to stand more easily than with either a spinal block or an epidural alone. That's because the medication is mostly narcotic, so you're less weak or numb. For this reason, a combined spinal/epidural block is sometimes known as a "walking epidural." Because the drugs go directly into your spinal fluid, they won't affect the baby.

Will I have to go under general anesthesia if I have a c-section?
Probably not. If your c-section is planned you'll most likely have an epidural. Only if you need an emergency
cesarean section may general anesthesia be called for. If so, you'll lose consciousness by breathing in drugs through a tube put down your trachea (windpipe).


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