How many months premature can survive?

Written by Zhao Li Li

Obstetrics

Updated on April 20, 2025

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Premature infants are those born between 28 and 37 weeks of gestation. Due to the incomplete development of various organ functions, premature infants are prone to a range of complications after birth, which can be severe and may even lead to death. Generally, the survival rate of premature infants is higher if they reach at least seven months, or 28 weeks, of gestation. If premature birth is inevitable, it is recommended to seek medical care at a qualified institution with specialized neonatal resuscitation wards to enhance the chances of the infant's survival. Generally, the chances of survival significantly increase when care is received at such medical facilities.

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Written by Zhao Li Li

Obstetrics

41sec

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Does a low-lying placenta cause preterm birth?

In cases of placenta previa, there is also a certain risk of preterm birth. Generally, in the late stages of pregnancy, a persistent low-lying placenta may have some impact on the development of the placenta and embryo. Excessive physical activity or normal daily activities may cause abnormal vaginal bleeding. Long-term blood clots pressing on the cervix can also promote cervical dilation and lead to preterm birth. Therefore, it is generally necessary to rest in bed and avoid excessive exercise after placenta previa occurs, in order to reduce the risk of bleeding.

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Written by Liu Wei Jie

Obstetrics

46sec

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Do contractions easily lead to premature birth?

There are two types of contractions. The first type is false labor contractions, which occur in the late stages of pregnancy. They generally happen more in the evening or afternoon and disappear in the morning. The true labor contractions are regular and intensify in waves, accompanied by an increase in vaginal discharge or spotting. If it's false labor, rest can usually improve the condition, and it's not a concern. However, some people, due to extreme anxiety, may experience frequent false labor contractions. In such cases, our general approach is still to recommend treatment for pregnancy maintenance. If it's true labor, there is definitely a possibility of premature birth.

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Written by Du Rui Xia

Obstetrics

1min 8sec

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How many weeks early can a premature baby survive?

In clinical practice, infants born after 28 weeks but before 37 weeks of pregnancy are considered preterm. The survival rate of these babies varies; the earlier the birth, the lower the likelihood of survival. Clinically, babies born at 23 weeks have a 17% chance of survival; those born at 24 weeks have a 39% survival rate; at 25 weeks, the rate is 50%; at 26 weeks, it increases to 80%; and at 27 weeks, it rises to about 90%. Babies born between 28 and 31 weeks have an even higher survival rate, approximately 95%; and from 32 to 33 weeks, the survival chances are comparable to those of full-term babies. Records indicate that the earliest preterm baby to survive was born at 21 weeks and five days, in Canada.

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Written by Yue Hua

Obstetrics and Gynecology

44sec

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Premature birth is how many months?

Preterm birth refers to a newborn born between 28 and less than 38 weeks of pregnancy. Moreover, at this time, the heart size is generally more than 1000 grams. There are many reasons for this occurrence, most of which are related to intrauterine infection in pregnant women, such as patients with premature rupture of membranes or chorioamnionitis are prone to preterm birth. Additionally, if there has been a previous pregnancy, abortion, with a short interval between them, or if an ultrasound detects that the cervical length is less than 25 millimeters, there is also an increased likelihood of preterm birth.

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Written by Zhang Lu

Obstetrics

1min 2sec

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Definition of premature birth date

Premature birth, compared to miscarriage and full-term birth, is defined differently. A miscarriage refers to childbirth before 28 weeks, and a full-term birth is one that occurs after 37 weeks. Births that occur between 28 weeks and 36 weeks plus 6 days are collectively referred to as premature births. During this period, the fetus is relatively larger and has a certain level of maturity, so the survival rate is relatively high. However, it still falls short when compared to full-term infants. Generally, 34 weeks is used as a boundary: infants born from 28 to 34 weeks are referred to as early preterm, while those born between 34 weeks and 36 weeks plus 6 days are considered late preterm. Therefore, premature births are divided into these two main categories. In clinical practice, if there are signs of premature birth, it is recommended to try to extend the gestational age and aim for childbirth during the late preterm period.