The hazards of premature rupture of membranes

Written by Yue Hua
Obstetrics and Gynecology
Updated on September 04, 2024
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Premature rupture of membranes primarily affects the mother by leading to infections. Once the membranes rupture, bacteria can easily enter the uterine cavity from the vagina, causing chorioamnionitis. Additionally, it may lead to placental abruption, as the rupture of the membranes causes a decrease in abdominal tension, thus making placental abruption more likely to occur. It also leads to an increased rate of cesarean sections, because the reduction in amniotic fluid can cause irregular uterine contractions and the umbilical cord to be easily compressed, which may endanger the fetus. The main impact on the fetus is an increased risk of preterm birth.

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Written by Zhang Lu
Obstetrics
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Can an ultrasound detect premature rupture of membranes?

Premature rupture of membranes (PROM) refers to the rupture of amniotic fluid before labor. The most common diagnostic method for PROM is based on the clinical symptoms of the patient, mainly intermittent vaginal discharge. PROM can be confirmed using pH test strips specific for this condition. Ultrasound can be used as an auxiliary diagnostic method for PROM because most pregnant women with PROM will show a decreased amount of amniotic fluid during an ultrasound. However, the specificity of using ultrasound to determine PROM is not strong. Although the membranes may rupture, amniotic fluid can still be continuously produced, so some pregnant women may still have a normal amount of amniotic fluid during an ultrasound. Therefore, in most cases of PROM, a reduction in amniotic fluid can be observed through ultrasound, but there are cases where the amniotic fluid level appears normal. In such instances, it's essential to analyze the patient's clinical symptoms.

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Written by Du Rui Xia
Obstetrics
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Is premature rupture of membranes dangerous?

When preterm premature rupture of membranes occurs, it can have certain impacts on both the pregnant woman and the fetus. The risks of preterm premature rupture of membranes primarily include the possibility of umbilical cord prolapse, preterm birth, or infection during pregnancy. If the presenting part of the fetus has not descended and the umbilical cord slips into the vagina, umbilical cord prolapse can easily occur, which is very dangerous and can lead to fetal hypoxia or even stillbirth. After the rupture of membranes, bacteria originally present in the vagina may take this opportunity to enter the uterus, causing chorioamnionitis or endometritis. If the infection is not controlled in time, sepsis may also occur.

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Written by Zhao Li Li
Obstetrics
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What will happen to fetal movement if the membranes rupture prematurely?

Generally, if premature rupture of membranes occurs, it is necessary to clearly determine the specific development of the embryo and the specific gestational age. If the fetus is preterm with premature rupture of membranes, it is necessary to promptly provide anti-infection treatment and promote fetal lung maturity among other symptomatic treatments. If the fetus is already at term, it is important to closely monitor the specific condition of cervical dilation and abdominal pain to decide on the mode of delivery. Normally, premature rupture of membranes does not affect fetal movement at all. A fetal heart rate monitoring test can be conducted to clarify the specific situation of the embryo's development within the uterine cavity and whether there is any fetal hypoxia, to comprehensively analyze the situation.

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Written by Zhang Lu
Obstetrics
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Premature rupture of membranes causes

Premature rupture of membranes is a common complication during pregnancy, which can easily lead to intrauterine infection of the fetus and preterm delivery. The main causes of premature rupture of membranes include the following aspects: First, the most common cause is an infection in the vagina, which then leads to an ascending infection, triggering chorioamnionitis. When chorioamnionitis occurs, the fragility of the membranes increases, making them prone to rupture, leading to the leakage of amniotic fluid. Second, the membranes can rupture due to a blunt impact on the abdomen, such as an accidental strong hit, which can cause the membranes to suddenly break, leading to premature rupture of membranes. Third, an excessive amount of amniotic fluid, due to various reasons, can increase the pressure inside the amniotic cavity, potentially leading to spontaneous rupture of the membranes. These are the various reasons for 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.