The relationship between the expected date of delivery of test tube babies and preterm delivery
IVF is an in vitro fertilization technology assisted pregnancy, the fertilized eggs are cultured to a certain stage of development and then implanted into the mother's womb. There is a certain relationship between the expected delivery date of IVF and preterm delivery, which is related to various factors.
1. Estimation of the expected delivery date of IVF
The expected date of IVF is usually determined by the day after the fertilized egg is implanted into the uterus. According to the development of the fertilized egg, the doctor can make a preliminary estimate of the expected date of delivery.
Generally speaking, 14 days after the fertilized egg is implanted into the uterus, the human chorionic gonadotropin (hCG) in the blood or urine can be detected to confirm whether the pregnancy is successful. According to this time, the expected date of IVF can be calculated.
However, it should be noted that due to individual differences and other factors, the estimated time is not absolutely accurate. Therefore, the accurate expected date needs to be adjusted by taking other factors into consideration.
2. Definition and causes of premature delivery
Preterm delivery refers to babies whose gestational age is less than 37 weeks. The risk of preterm birth related to the expected delivery date of IVF can be considered from multiple perspectives.
First, IVF mothers often choose assisted reproductive technology because of their physical condition or age. These factors themselves may increase the risk of premature delivery. For example, older women and women with chronic diseases such as hypertension and diabetes may be more likely to give birth prematurely.
Secondly, the fertilized eggs of IVF may be affected by some unpredictable biological or environmental factors during the cultivation process, which may also lead to premature delivery. For example, unstable culture environment, poor embryo quality and other factors will increase the risk of premature delivery.
3. Risk of premature birth of test tube babies
According to the study, the risk of preterm birth of IVF is slightly higher than that of naturally conceived infants. This is mainly because IVF mothers tend to be older, and their physical condition may not be as good as that of naturally conceived women. In addition, assisted reproductive technology itself may also have a certain impact on the development of the fetus in the process of fertilized egg culture and transplantation.
A study published in the British Medical Journal found that the risk of premature birth of test tube babies was about twice that of naturally born babies. Nevertheless, most IVF babies can still be born at term.
4. Measures to reduce the risk of premature birth of test tube babies
Although IVF has a higher risk of premature delivery than naturally conceived infants, there are some measures that can be taken to reduce this risk.
First, IVF mothers can reduce the risk of premature delivery by maintaining a healthy lifestyle. This includes regular exercise, healthy eating, quitting smoking and drinking, and maintaining an appropriate weight.
Secondly, around the whole treatment process of IVF, doctors and patients can actively communicate to understand some risk factors of IVF and the signs of premature delivery. In this way, once there are signs of premature delivery, doctors can take appropriate measures in time.
Finally, it is also very important to choose a formal and professional assisted reproduction hospital. Only in this way can the whole IVF process and possible problems be treated and consulted professionally.
Summary
There is a certain correlation between the expected delivery date of IVF and preterm delivery. The expected date of IVF is usually determined by the time after the fertilized egg is implanted into the uterus. However, individual differences and other factors may make this time estimate inaccurate. IVF has a higher risk of premature delivery than naturally conceived infants, which is mainly related to the age and physical condition of the mother and the impact of assisted reproductive technology itself on fetal development. In order to reduce the risk of premature birth of IVF babies, mothers can maintain a healthy lifestyle, doctors and patients can actively communicate and choose a formal assisted reproductive hospital.
