How does oxytocin induce labor




















This method works for some women, but not all. Breaking your water also called an amniotomy. The doctor ruptures the amniotic sac during a vaginal exam using a little plastic hook to break the membranes. If the cervix is ready for labor, amniotomy usually brings on labor in a matter of hours.

Giving the hormone prostaglandin to help ripen the cervix. A gel or vaginal insert of prostaglandin is inserted into the vagina or a tablet is given by mouth. This is typically done overnight in the hospital to make the cervix "ripe" soft, thinned out for delivery.

Administered alone, prostaglandin may induce labor or may be used before giving oxytocin. Giving the hormone oxytocin to stimulate contractions.

Given continuously through an IV, the drug Pitocin is started in a small dose and then increased until labor is progressing well. After it's administered, the fetus and uterus need to be closely monitored.

Oxytocin is also frequently used to spur labor that's going slowly or has stalled. What Will It Feel Like? Page 3 Risks and Precautions Inducing labor is not like turning on a faucet. Many babies are born "post-term" without any complications, but concerns include: A vaginal delivery may become harder as the baby gets bigger.

As babies get bigger, the chance of an injury during delivery, such as a broken bone, increases. The placenta that helps to provide the baby with nourishment is deteriorating. The amniotic fluid can become low or contain meconium — the baby's first feces. Labor can be induced by the following methods: 1. Medications Prostaglandin: Suppositories are inserted into the vagina during the evening causing the uterus to go into labor by morning.

Artificial rupture of the membranes AROM When the bag of water amniotic sac breaks or ruptures, production of prostaglandin increases, speeding up contractions. What are the advantages of artificial rupture of the membranes? Labor may be shortened by an hour. The procedure allows the amniotic fluid to be examined for the presence of meconium, which may be a sign of fetal distress.

What are the disadvantages of artificial rupture of the membranes? It is possible for the umbilical cord to slip out first prolapsed cord. Infection can occur if there is too much time between rupture and birth. What are some medical reasons for inducing labor? Labor is likely to be induced: When a complication develops such as hypertension, Preeclampsia , Heart Disease, Gestational Diabetes , or bleeding during pregnancy. If the baby is in danger of not getting enough nutrients and oxygen from the placenta.

The pregnancy is prolonged beyond 42 weeks with possible risk to the baby from a gradual decrease in the supply of nutrients from the placenta. There is an infection inside the uterus known as C horioamnionitis. What should I expect? This means that it starts labor without needing to use oxytocin or artificially rupture the membranes. He or she then "sweeps" the finger around the inside edge of the opening. Sweeping the membranes is low-risk. It does not raise your risk of infection. You may start to feel uncomfortable afterward, with irregular contractions and some bleeding.

To help start or speed up labor, your doctor may rupture your amniotic sac rupture of the membranes. This should only be done after your cervix has started to open dilate and the baby's head is firmly descended engaged in your pelvis.

If the membranes are ruptured too early, there is a risk of the umbilical cord slipping down around or below the baby's head cord prolapse. If the cord gets squeezed between the baby's head and the pelvic bones, the blood supply to the baby may be reduced or stopped. To rupture your amniotic sac amniotomy , your doctor inserts a sterile plastic device into your vagina. This device may look like a long crochet hook or may be a smaller hook attached to the finger of a sterile glove.

The hook is used to pull gently on the amniotic sac until the sac breaks. This procedure is usually not painful. A large gush of fluid usually follows the rupture of the amniotic sac. The uterus continues to produce amniotic fluid until the baby's birth. So you may continue to feel some leaking, especially right after a hard contraction.

If active labor has started on its own but contractions have slowed down or completely stopped, steps need to be taken to help labor progress augmentation. Augmentation will be done when:. If labor fails to progress in spite of membrane sweeping, an amniotomy, oxytocin, or a combination of these measures, delivery by cesarean section may be considered. Author: Healthwise Staff. This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information.

Your use of this information means that you agree to the Terms of Use. When making your decision, discuss the risks and benefits with your doctor. Do not be afraid to ask lots of questions, such as:. You might need to consider several other health concerns. For example, there is a higher risk of stillbirth or other problems if your baby is not born before 42 weeks, and an increased risk of infection if your waters break more than 24 hours before labour starts.

There are different ways to induce labour. Your doctor or midwife will decide the best one for you when they examine your cervix. You may need a combination of different strategies. You will need to provide written consent for the procedure. During a vaginal examination, the midwife or doctor makes circular movements around your cervix with their finger.

This action should release a hormone called prostaglandins. You do not need to be admitted to hospital for this procedure and it is often done in the doctor's room. This can be enough to get labour started, meaning you will not need any other methods. Risks: This is a simple and easy procedure; however, it does not always work. It can be a bit uncomfortable, but it does not hurt.

A synthetic version of the hormone oxytocin is given to you via a drip in your arm to start your contractions. When the contractions start, the amount of oxytocin is adjusted so you keep on having regular contractions until the baby is born.

This whole process can take several hours. Risks: Oxytocin can make contractions stronger, more frequent and more painful than in natural labour. You are more likely to need pain relief and the baby will be continually monitored. You will not be able to move around much because of the drip in your arm and you will also have a fetal monitor around your abdomen to monitor your baby.

Sometimes the contractions can come too quickly, which can affect the baby's heart rate. This can be controlled by slowing down the drip or giving you another medicine. Artificial rupture of membranes ARM is used when your waters do not break naturally. Your doctor or midwife inserts a small hook-like instrument through your vagina to make a hole in the membrane sac that is holding the amniotic fluid. This will increase the pressure of your baby's head on your cervix, which may be enough to get labour started.

Many women will also need oxytocin to start their contractions.



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