Diseases

Many women opt not to receive medications or interventions for pain control during labor and delivery, while others choose medical or procedural pain control methods. Several different opioid analgesic and opioid agonist medications are acceptable for pain control. Examples are

• injectable meperidine,
• fentanyl,
• morphine,
• butorphanol (Stadol), and
• nalbuphine (Nubain).

Regional anesthesia is another option. This can be administered as an epidural, spinal, or combined spinal-epidural block. Research has shown that regional anesthesia is more effective than injectable medications for controlling pain. Moreover, large scale clinical trials did not show an increase in the C-section rate in women who opted for regional anesthesia. Women who choose not to receive pain medications can use breathing techniques and/or imagery for pain control. Relaxation techniques and yoga have also proved beneficial.

Signs and symptoms of impending labor are not uniform among all women. Lightening Lightening is a term used to denote the descent of the fetal head into the pelvis as labor approaches. It can occur up to two weeks prior to the onset of labor, or it may not occur at all. At that time there may be increased pressure on the maternal bladder accompanied by the urge to urinate more frequently. Many women find it easier to breathe after lightening occurs because upward pressure on the diaphragm diminishes. Mucus plug Release or passage of the "mucus plug" can be another sign that labor is near. Mucus produced by the cervical glands normally blocks the entrance to the cervix and helps prevent infection. When the fetal head impinges on the cervix, mucus from the cervical glands, along with a small amount of blood, is expelled. This results in a blood-tinged or brownish discharge being expelled from the vagina. Passage of the mucus plug may occur days before or after labor begins. It is also common after a vaginal examination. Water breaking Spontaneous rupture of the fetal membranes is referred to as one's "water breaking." This means that the membranes that surround the baby have ruptured, and clear amniotic fluid is often expelled from the vagina at that time. Once this occurs, labor will generally ensue spontaneously. If it does not, induction of labor may be necessary to avoid infection ascending upward through the vagina into the uterus. Most commonly rupture of the membranes does not occur until labor has already begun. Contractions Finally, labor begins with the onset of contractions. At that point the cervix begins to thin out and dilate. When contractions begin to occur less than ten minutes apart, this frequently signals the onset of labor. Irregular contractions, known as Braxton-Hicks contractions or "false labor," occur toward the end of pregnancy during the third trimester, and they do not necessarily signify that labor is imminent. Some women even experience these contractions during the second trimester. Braxton-Hicks contractions are usually milder than those of true labor, and they do not occur at regular intervals.

Labor is divided into three stages; corresponding to the dilation of the cervix, the birth of the baby, and the delivery of the placenta.

• During the first stage of labor, you will likely have pelvic examinations to check the dilation and thinning of the cervix.
• The baby's heart rate is usually checked intermittently with a Doppler device, or continuous electronic fetal monitoring may be employed.
• External fetal monitoring is accomplished by placing a transducer on the maternal abdominal wall. The transducer detects the fetal heart rate and displays it on a visual tracing.
• Internal monitoring is another method used to follow the fetal heartbeat. With this technology, a small electrode is passed through the cervix and attached to the fetal scalp.
• The type of monitoring selected depends upon a number of factors, and it will vary from patient to patient. Your health-care professional will choose the most appropriate type for your individual situation.
• Continuous fetal monitoring is almost universally used if the woman receives epidural anesthesia, or if oxytocin (Pitocin) is used to induce labor. It is also employed with high-risk pregnancies or if the labor is complicated.