Will early engagement of the fetus lead to premature birth?

Written by Zhang Lu
Obstetrics
Updated on January 25, 2025
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Fetal engagement refers to the leading part of the fetus having entered into the woman's pelvis. There isn't a necessary correlation between fetal engagement and preterm birth; however, fetal engagement could indicate a possibility of preterm birth or an upcoming labor. It is important to pay attention to the timing of fetal engagement and the expectant mother's sensations post-engagement. Firstly, for the vast majority of pregnant women, fetal engagement should occur after week 32 or 34. Early engagement should prompt attention to the presence of other clinical symptoms. Secondly, be mindful if there are feelings of descent or abdominal pain after the fetal engagement. Regular checks of the cervical canal length should be conducted if these sensations frequently occur. If the cervical canal is progressively shortening, it may suggest a risk of preterm birth. If there is no shortening of the cervical canal, it means that the fetal engagement and these clinical symptoms are unlikely to cause preterm birth.

Other Voices

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Written by Liu Wen Li
Obstetrics
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Premature birth: Cesarean section or natural delivery?

Whether to opt for cesarean or vaginal delivery for preterm birth needs a comprehensive grasp of the pregnant woman's entire condition before assessing and deciding on the mode of childbirth. First, it's necessary to check if the woman has any complications and the severity of these complications, as well as whether her physical condition allows for vaginal delivery. Additionally, the changes in fetal heart rate must be considered. If the fetal heart rate is particularly poor, and the duration of vaginal delivery is long such that the child cannot endure it, then a cesarean section may be needed. Beyond these conditions, it is also important to evaluate the state of the pelvis, the size of the fetus, and the condition of the cervix. Generally, if vaginal delivery is possible for preterm births, it is still encouraged.

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Written by Du Rui Xia
Obstetrics
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What are the signs of premature birth?

After 29 weeks of pregnancy, if the baby is born prematurely, it is called preterm birth. When preterm labor occurs, there are some early signs, mainly manifesting as the onset of abdominal pain, which is persistent and gradually worsens. Additionally, due to the contraction of the uterus, the abdomen becomes hard and localized muscle tension occurs, leading to a feeling of swelling. Moreover, when the amniotic fluid ruptures, the pregnant mother will feel a flow of liquid from the vagina and there will be an increase in intestinal activity compared to usual, along with some abnormal vaginal discharge. These are some of the signs of preterm labor.

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Written by Du Rui Xia
Obstetrics
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How many weeks early can a premature baby survive?

Preterm birth refers to births that occur after 28 weeks of pregnancy but before 37 weeks. Preterm infants have lower resistance compared to full-term infants and generally require special care to survive. The survival rate varies with the gestational age: at 32 to 33 weeks, the survival rate can reach 95%; at 28 to 31 weeks, it is between 90% and 95%; at 26 weeks, it is around 80%; and at 27 weeks, it is about 90%. After 34 weeks of pregnancy, the survival rate of the baby is very high, almost the same as that of a full-term baby.

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Written by Du Rui Xia
Obstetrics
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How to prevent preterm birth

The causes of preterm birth are numerous, and prevention mainly involves addressing these causes. For etiological reasons, proactive treatment of some chronic diseases is necessary. For pregnant women with a history of preterm birth, it is crucial to pay close attention two to three weeks before the previous preterm birth date. They should avoid overexertion, abstain from sexual activity, and rest in bed until the expected due date. It is also important to identify the causes of preterm birth, such as cervical insufficiency. If so, a cerclage surgery can be performed around the 14th week of pregnancy. If a pregnant woman shows signs of labor or preterm birth, she should be given oxygen immediately, and an injection of vitamin K should be administered to prevent intracranial hemorrhage in the newborn.

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Written by Du Rui Xia
Obstetrics
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Is premature birth hereditary?

Premature birth is not hereditary. There are many causes of premature birth, including reasons associated with the pregnant woman herself, such as hypertension and diabetes during pregnancy, as well as concurrent conditions like chronic nephritis and hyperthyroidism, which can lead to premature birth. Additionally, premature birth can be caused by a relaxed cervix, poor uterine development, congenital uterine malformations, and uterine fibroids. Furthermore, trauma to the abdomen during pregnancy, long-distance and prolonged travel, fatigue, and excessive emotional fluctuations can also lead to premature birth. Therefore, these factors related to premature birth are not associated with genetics.