Why does one twin possess a fetal heartbeat and embryonic bud, while the other lacks both?

As the time frame for twins to develop fetal heartbeat and embryo varies, it is generally considered within the norm for these to manifest within 80 days. Should an examination reveal that one embryo has failed to develop, a further week of observation is warranted. If, after this additional week, the embryo still lacks a fetal heartbeat and embryonic bud, consideration must be given to the possibility of embryonic stagnation or spontaneous miscarriage. At present, solely follow-up observation is necessary. In the event of embryonic stagnation, the non-viable embryo will be naturally absorbed, eliminating the need for further treatment. Regular prenatal examinations at the hospital can proceed as usual, with emphasis on monitoring the development of the remaining embryo. As long as this embryo continues to develop normally, there is no cause for concern.

1. Chromosome abnormalities necessitate prenatal examination and medical diagnosis prior to conception. In cases with a family history of genetic diseases, consideration should be given to avoiding pregnancy or adopting effective nursing measures.

2. Exposure to harmful substances should be avoided. For individuals employed in related industries, it is advisable to transfer to non-hazardous departments several months prior to conception. Newly renovated homes should be avoided until inspections confirm their safety for habitation. Additionally, consume only clean and uncontaminated food.

3. Limit radiation exposure by refraining from X-ray examinations before pregnancy. Maintain a safe distance, exceeding one meter, from operating microwaves. Minimize prolonged mobile phone usage, restricting it to necessary occasions only.

4. When not intending to conceive, implement appropriate contraceptive measures. Prior to pregnancy planning and during illness, confirm pregnancy status before taking medication. If pregnant, exercise caution and consult a doctor to select medications that are both beneficial to your condition and safe for the fetus.