How long can premature rupture of membranes last?

Written by Du Rui Xia
Obstetrics
Updated on September 25, 2024
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When premature rupture of membranes occurs, it can last up to 24 hours. If labor has not commenced 24 hours after rupture, pregnancy termination becomes necessary, and one can either induce labor to facilitate a vaginal delivery or opt for a cesarean section. For ruptures occurring between the 28th and 35th weeks of pregnancy, as the baby's lungs are not yet fully developed, it is crucial to administer medication promptly to help mature the fetal lungs and extend the gestational period as much as possible. Once the fetal lung development is adequate, pregnancy should be terminated in a timely manner. For cases of premature rupture of membranes occurring after 36 weeks of pregnancy, where fetal development is generally mature, pregnancy can be terminated more promptly.

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Written by Zhang Lu
Obstetrics
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Premature rupture of membranes symptoms

Premature rupture of membranes refers to the rupture of the membranes before labor, and the symptoms of premature rupture of membranes include the following aspects: Firstly, a large amount of fluid will flow out of the vagina. Once the membranes rupture, amniotic fluid will flow out intermittently, releasing a colorless and odorless fluid, which will wet the underwear. Secondly, there may be a small amount of bleeding. When the membranes rupture, the capillaries at the edges of the membranes may bleed slightly, mixing with the amniotic fluid, resulting in some spotting or slight bleeding. Thirdly, there may be abdominal pain and the sensation of contractions. After the rupture of the membranes, this can stimulate the cervix, causing the release of inflammatory mediators from the cervix and inducing uterine contractions, leading to contractions and the sensation of abdominal pain. These are the symptoms of premature rupture of membranes.

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Written by Su Wen
Obstetrics and Gynecology
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Premature rupture of membranes complications

The complications of premature rupture of membranes mainly include two aspects. The first is the impact on adults, that is, on the mother. It can lead to chorioamnionitis, causing severe infection, sepsis, and an increased chance of cesarean delivery. The second is the impact on the fetus. If premature rupture of membranes occurs, it may lead to fetal distress in utero, fetal death in utero, and neonatal infection. For instance, pneumonia caused by inhalation, neonatal asphyxia, and severe cases leading to death, etc. Once the symptoms of premature rupture of membranes are detected, it is necessary to be hospitalized as soon as possible to take the necessary treatment measures.

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Written by Zhang Lu
Obstetrics
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Premature rupture of membranes how is it shown on ultrasound?

Ultrasound is a commonly used auxiliary method for diagnosing premature rupture of membranes. After the membranes rupture prematurely, amniotic fluid intermittently leaks out from the uterine cavity, but the production of amniotic fluid often cannot keep up with the leakage. Therefore, the majority of pregnant women with premature rupture of membranes will experience a reduction in amniotic fluid volume. Ultrasound will reveal that there is still a small amount of amniotic fluid in the amniotic cavity, but the volume is much lower than the normal range; the maximum depth of the amniotic fluid should be less than three centimeters, and the amniotic fluid index should be less than eight centimeters, which is a common occurrence. However, sometimes, if not much amniotic fluid leaks out after premature rupture of membranes, the ultrasound may sometimes show that the amniotic fluid volume is normal. In such cases, it is necessary to combine this finding with the patient's clinical symptoms to jointly determine the presence of premature rupture of membranes.

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Written by Zhang Lu
Obstetrics
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Will the fetus still move if the membranes rupture prematurely?

Premature rupture of membranes refers to the rupture of membranes before labor, with amniotic fluid leaking intermittently. Based on the timing of the rupture, it can be classified into term premature rupture of membranes and preterm premature rupture of membranes. Although amniotic fluid will leak after the membranes rupture, leading to a reduction in its volume, amniotic fluid continues to be produced. Therefore, the fetus will still continue to move actively inside the uterus. In most cases, there is no abnormality in fetal movements after membrane rupture. However, if the membranes have been ruptured for a long time, or if the fetus experiences intrauterine hypoxia due to other factors, a decrease or absence of fetal movements may occur. Thus, normally, fetal movements continue after membrane rupture, but they may decrease or disappear if hypoxia occurs.

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Written by Zhang Lu
Obstetrics
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Can premature rupture of membranes at 14 weeks heal?

Premature rupture of membranes refers to the rupture of the amniotic sac before labor, causing intermittent discharge of amniotic fluid. Premature rupture of membranes can occur at any stage of pregnancy, and it is generally believed in clinical practice that it is more likely to occur in the mid to late stages of pregnancy. The probability of occurrence before 20 weeks of pregnancy is relatively low. If premature rupture of membranes occurs at 14 weeks of pregnancy, once diagnosed, it is irreversible as there is currently no method to cure it. For 14-week premature rupture of membranes, an ultrasound, vaginal examination, and pH paper test should first be conducted to confirm whether it is indeed a premature rupture of membranes. If it is confirmed as a premature rupture of membranes, then the only option is to terminate the pregnancy; if it is not, the pregnancy can be continued.