Premature birth is how many weeks?

Written by Zhao Li Li

Obstetrics

Updated on September 19, 2024

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Under normal circumstances, embryos that develop from 28 to 40 weeks are considered viable, and babies born during this period generally have a good survival ability. However, babies born before 37 weeks of amenorrhea are generally considered premature. Therefore, babies born between 28 weeks and 36 weeks plus 6 days are considered premature. Premature babies, due to the immaturity of their organs and systems, are prone to complications. If the baby has already been born, it is recommended to actively pursue appropriate premature care and symptomatic treatment.

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Written by Zhang Lu

Obstetrics

59sec

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Premature birth is what it means.

Preterm birth refers to giving birth before full-term pregnancy, defined as delivery occurring between 28 and 36 weeks plus 6 days of gestation. Corresponding conditions are miscarriage and full-term delivery: before 28 weeks is termed a miscarriage, while delivery after 37 weeks is termed full-term birth. Because preterm infants already possess certain vital functions, most can survive with appropriate emergency intervention and treatment. However, the risks associated with preterm birth are relatively high and depend on the specific causes of prematurity. Some premature births are due to premature rupture of membranes, while others are medically induced, for example in cases of abruptio placentae or severe preeclampsia. Therefore, it is crucial in clinical practice to provide rational treatment for preterm labor, aiming to extend the duration of pregnancy as much as possible to avoid neonatal death.

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Written by Zhang Lu

Obstetrics

55sec

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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 Zhang Lu

Obstetrics

1min 5sec

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What are the symptoms of premature birth?

Premature birth refers to delivery occurring between 28 and 36+6 weeks of pregnancy. The symptoms of premature birth primarily include the following aspects: First, regular uterine contractions occur. These contractions can lead to the descent of the fetal head and exert pressure on the cervix, which is necessary for the delivery of the fetus. It generally manifests as pain every three to five minutes, with each episode of pain lasting more than one minute, and both the frequency and intensity of the pain gradually increasing. Second, the appearance of "bloody show" occurs. As the fetus descends, it can cause the rupture of capillaries at the edge of the membranes, leading to bloody show. Third, there is a noticeable feeling of heaviness or pressure. Gynecological examinations can reveal dilation of the cervix and shortening of the cervical canal. When these symptoms appear, an assessment for premature birth should be conducted, and preparations for premature delivery should be made.

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Written by Zhao Li Li

Obstetrics

51sec

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What are the symptoms of preterm labor?

According to the current situation, generally, embryos delivered between 28 to 37 weeks of cessation of menstruation are considered preterm. Under normal circumstances, if there is already regular abdominal pain accompanied by abdominal bloating and uterine contractions, it is generally considered whether there is a possibility of threatened miscarriage. Normally, frequent uterine contractions and abdominal hardening can stimulate cervical dilation, which generally may lead to preterm birth. Therefore, these are the signs of preterm labor. If regular abdominal pain occurs and persists for several hours without relief, it is advisable to seek medical attention promptly for treatment to prevent premature birth.

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Written by Liu Wen Li

Obstetrics

52sec

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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.