Premature rupture of membranes caused by

Written by Du Rui Xia
Obstetrics
Updated on May 15, 2025
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The main cause of premature rupture of membranes leading to preterm birth is infection of the reproductive tract, including vaginitis and cervicitis. These inflammations can ascend along the vagina and uterus, affecting the amniotic membrane and leading to its damage, which causes premature rupture of the membrane. Therefore, women should receive timely treatment for any gynecological infections before or during pregnancy, and should not take them lightly. Additionally, high pressure in the amniotic cavity, such as with multiple pregnancies or excessive amniotic fluid, can exceed the tolerance of the amniotic membrane and cause it to rupture prematurely. Moreover, physical trauma to the mother, sexual intercourse during pregnancy with excessive movement, or improper amniocentesis can also lead to premature rupture of the membranes.

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Written by Du Rui Xia
Obstetrics
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Can premature birth be natural delivery?

Whether a vaginal delivery is possible in the case of preterm labor depends on the condition of the pregnant woman and the fetus, including the woman's birth canal, labor strength, the size and position of the fetus, among other factors. Generally, during a medical visit, a doctor will measure the woman's pelvis to roughly determine whether vaginal delivery is feasible. Women who experience preterm labor should go to the hospital for timely medical care and choose a hospital equipped for emergency services. If preterm delivery occurs, the baby's respiratory function may be relatively weak, necessitating the use of special equipment to assist breathing.

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Written by Liu Wen Li
Obstetrics
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Does placenta previa cause preterm birth?

Placenta previa is likely to lead to premature birth. Why is that? Placenta previa refers to the condition where the placenta is positioned lower in the uterus, and the most common symptom is recurrent, painless bleeding during pregnancy. This is because the low-lying placenta often leads to frequent bleeding. If the bleeding is minimal, there is still hope to maintain the pregnancy, allowing the fetus to grow longer inside the uterus. However, in the event of heavy bleeding, if the baby remains in the uterus without delivery, a critical situation can arise due to blood loss, potentially leading to the disappearance of fetal heart activity. At this point, the pregnancy would need to be terminated, thus often resulting in premature birth.

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Written by Du Rui Xia
Obstetrics
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Is low amniotic fluid likely to lead to premature birth?

During pregnancy, if there is a reduction in amniotic fluid, it is easy for premature delivery to occur. Insufficient amniotic fluid can cause fetal hypoxia in the uterus, which may lead to frequent fetal movements and stimulate uterine contractions, resulting in premature birth. When there is a reduction in amniotic fluid, it is important to replenish it in a timely manner. This can be done by drinking more water, intravenous fluid infusion, or directly injecting saline into the amniotic cavity. To determine the best method to replenish the amniotic fluid, it is advisable to seek treatment under the guidance of a doctor and to closely monitor changes in fetal heart rate and movements.

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Written by Zhang Lu
Obstetrics
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Signs of premature birth

Preterm birth refers to childbirth occurring between 28 and 36 weeks plus six days of pregnancy. The signs of preterm birth include the following aspects. First, regular contractions occur, generally defined as four contractions within 20 minutes or eight contractions within 60 minutes. Second, there may be a small amount of "show," mainly due to minor bleeding caused by the separation of the fetal membrane from the uterine wall. Third, many women experience a significant feeling of heaviness in the lower abdomen, which is caused by the descent of the fetal head. Fourth, upon examination, it can be found that the cervical canal has shortened and the cervical opening has dilated. When the above symptoms occur, there should be a high suspicion of the risk of preterm birth, and medications should be used promptly as an intervention to try to avoid the occurrence of preterm birth.

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Written by Zhao Li Li
Obstetrics
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Signs of premature birth

Generally, babies born between 28 and 37 weeks of gestation are considered premature. Normally, premature babies have underdeveloped organ systems, which makes them prone to serious abnormalities in various organs after birth. This can lead to conditions such as respiratory distress syndrome or cerebral palsy. Signs of premature labor typically include sudden regular abdominal pain without any other abnormalities, accompanied by clear uterine contractions and a feeling of abdominal heaviness, with a persistent, notable dilation of the cervix.