Is it normal for a premature baby to weigh more than five jin?

Written by Zhao Li Li

Obstetrics

Updated on February 19, 2025

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If the newborn is currently premature and weighs a bit over five jin (approximately 2.5 kilograms), it is generally considered within the normal range. Typically, if a newborn weighs more than 2500 grams, it is considered a full-term birth weight and there are no abnormalities. Therefore, if the newborn's weight is within the normal range after birth and there are no abnormalities in the development of the organs, it is possible to observe temporarily without the need for an incubator. It is also crucial to closely monitor the various vital signs of the newborn and pay attention to normal feeding and care.

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Written by Du Rui Xia

Obstetrics

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Does placenta previa cause preterm birth?

When a placenta previa occurs, it is likely to lead to premature birth. Placenta previa is a condition where, after 28 weeks of pregnancy, the placenta is positioned low in the uterus, often below the presenting part of the fetus, and attaches to the lower segment of the uterus or near the internal os of the cervix. In the late stages of pregnancy, dilation of the cervix can cause the placenta to be misaligned with the uterine wall, leading to recurrent, painless bleeding. When the bleeding reaches a certain amount, it can easily lead to premature separation of the placenta, inducing uterine contractions and the onset of premature birth. In cases of placenta previa with significant vaginal bleeding, it is necessary to terminate the pregnancy promptly.

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Written by Du Rui Xia

Obstetrics

57sec

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How to prevent preterm birth

The causes of preterm birth are numerous, and prevention mainly involves addressing these causes. For etiological reasons, proactive treatment of some chronic diseases is necessary. For pregnant women with a history of preterm birth, it is crucial to pay close attention two to three weeks before the previous preterm birth date. They should avoid overexertion, abstain from sexual activity, and rest in bed until the expected due date. It is also important to identify the causes of preterm birth, such as cervical insufficiency. If so, a cerclage surgery can be performed around the 14th week of pregnancy. If a pregnant woman shows signs of labor or preterm birth, she should be given oxygen immediately, and an injection of vitamin K should be administered to prevent intracranial hemorrhage in the newborn.

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Written by Du Rui Xia

Obstetrics

49sec

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How many weeks early can a premature baby survive?

Preterm birth refers to births that occur after 28 weeks of pregnancy but before 37 weeks. Preterm infants have lower resistance compared to full-term infants and generally require special care to survive. The survival rate varies with the gestational age: at 32 to 33 weeks, the survival rate can reach 95%; at 28 to 31 weeks, it is between 90% and 95%; at 26 weeks, it is around 80%; and at 27 weeks, it is about 90%. After 34 weeks of pregnancy, the survival rate of the baby is very high, almost the same as that of a full-term baby.

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Written by Du Rui Xia

Obstetrics

45sec

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Preterm birth refers to how many weeks?

Premature birth refers to a baby born after the pregnancy has reached 28 weeks but before completing 37 weeks. Most of these babies weigh less than 2500 grams at birth and have poorer adaptive abilities compared to full-term babies. They require special care. Feeding premature infants can be challenging. They generally need to be fed breast milk or formula every two to four hours. Start by feeding once or twice; if there is no vomiting for six to eight hours, continue feeding some milk. Also, position the baby's head to one side to prevent inhalation of vomit.

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Written by Zhao Li Li

Obstetrics

50sec

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What are the signs of premature birth?

Under normal circumstances, during preterm labor, there may first be regular uterine contractions accompanied by continuous cervical dilation. This situation should be considered a possible onset of preterm labor. Generally, the period from after 28 weeks to before 37 weeks of gestation is considered the possible range for preterm labor to occur. Therefore, if there are symptoms like regular abdominal pain, backache, or a feeling of heaviness, it is necessary to seek medical attention promptly. When needed, local physical therapy, symptomatic treatment, or administration of medications to sustain the pregnancy can effectively alleviate the symptoms.