The harms of premature rupture of membranes infection

Written by Zhang Lu
Obstetrics
Updated on February 11, 2025
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After premature rupture of membranes, because the amniotic cavity is open, some pathogens can cause intrauterine infections through ascending infections. If an infection occurs after premature rupture of the membranes, the harm caused mainly affects the mother and fetus, divided into the following two aspects: First, the impact on the fetus is that it is easy for the fetus itself to become infected, which can lead to congenital neonatal infections after birth, and in severe cases, it may cause fetal death. Second, it can cause maternal infection. If the infection is only limited to the amniotic cavity, sometimes the impact on the mother is not significant. However, if the infection spreads locally, such as into the pelvic cavity, or spreads through the bloodstream, it can cause a systemic inflammatory response, sometimes causing high fever, and in severe cases, it can lead to septic shock.

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Written by Zhang Lu
Obstetrics
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Does premature rupture of membranes require a cesarean section?

Premature rupture of membranes refers to the rupture of the membranes before labor begins, causing amniotic fluid to leak periodically from the uterine cavity. Pregnant women with premature rupture of membranes can choose either vaginal delivery or cesarean section. Simply having a premature rupture of membranes is not an indication for cesarean section, but in some special cases of premature rupture of membranes, a cesarean section may be necessary. First, if the mother has previously had a cesarean delivery and experiences premature rupture of membranes in a subsequent pregnancy, a cesarean may be chosen; second, if the fetal position is abnormal, such as breech or transverse lies, after the rupture of membranes, a cesarean may be necessary; third, cesarean can be considered if fetal hypoxia occurs. For typical cases of premature rupture of membranes, a vaginal delivery can be attempted, but during the process, it is important to enhance fetal heart monitoring. If severe complications such as fetal hypoxia or placental abruption occur, it may be necessary to switch from vaginal delivery to cesarean section.

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Written by Zhang Lu
Obstetrics
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Is premature rupture of membranes prone to infection?

After premature rupture of membranes, various aspects of impact on both the mother and the fetus can occur, but the most important is the risk of infection. After the rupture of membranes, since the amniotic cavity is connected to the vagina through the cervix, the bacteria present in the vagina can potentially enter the amniotic cavity through the cervix and cause an infection inside the amniotic cavity. Therefore, after the rupture of membranes, the most crucial action is to prevent infection, primarily using antibiotics for treatment and closely monitoring indicators of infection. Monitoring for infection after premature rupture of membranes can be done in the following ways: first, pay attention to the characteristics of the amniotic fluid, which often has an odor in case of infection; second, monitor infection indicators, including white blood cells and C-reactive protein; third, observe if the pregnant woman exhibits any symptoms of fever.

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Written by Zhang Lu
Obstetrics
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Premature rupture of membranes symptoms

Premature rupture of membranes, as the name implies, refers to the clinical symptoms caused by the rupture of the amniotic sac before labor. These symptoms include the following aspects. First, there will be a leakage of amniotic fluid from the vagina, manifesting as wet pants or a wet bedsheet, which is a primary indication of premature rupture of membranes. Second, when the membranes rupture prematurely, there is often a small amount of bloody show. This is mainly because there are small capillaries on the membranes that also bleed when the membranes rupture, causing blood to mix with the amniotic fluid. Third, premature rupture of membranes often is accompanied by significant contractions, as the increase in pressure within the amniotic cavity during contractions can cause the membranes to rupture. When these situations occur, it is important to promptly go to the hospital to undergo an ultrasound and gynecological examination to confirm whether there is a premature rupture of membranes.

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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 Yue Hua
Obstetrics and Gynecology
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Premature rupture of membranes requires what examinations?

To diagnose premature rupture of membranes, first, a pH test of the vaginal fluid must be conducted. The normal pH value of vaginal fluid in women ranges from 4.5 to 5.5, whereas the pH of amniotic fluid ranges from 7.0 to 7.5. If the membranes have ruptured prematurely, the pH value would be greater than 6.5. Additionally, a smear test of the vaginal fluid can be done by placing vaginal secretions under a glass slide and examining them under a microscope. If fern-like crystals are observed, this indicates the presence of amniotic fluid. Furthermore, an ultrasound examination can be conducted. If the ultrasound shows a rapid decrease in the amount of amniotic fluid, this can assist in the diagnosis.