Patient's question:
Today I had an amniocentesis, but two tubes of blood were drawn. What could be the reason? Today I had an amniocentesis at West China Second University Hospital, and two tubes of blood were drawn. The doctor asked if I had ever experienced bleeding before. I have never had any, and previous fetal examinations were normal as well. The doctor didn't say anything, didn't ask me to redraw, and finally, after listening to the fetal heartbeat, which was normal, he let me go without giving any special instructions.Doctor's answer:
Analysis of the condition: Hello, the situation you mentioned is likely that the placenta has been pierced. The needle did not pass through the placenta; its tip is inside the placenta. Since the placenta has a very rich blood supply, blood was drawn from it during the extraction. If it is an anterior placenta, this situation is most likely to occur. The needle should be inserted further to pass through the placenta and enter the amniotic fluid, at which point amniotic fluid can be extracted. The possibility of piercing the fetus is extremely small. Even if the fetus is pierced, it would be very difficult to draw blood. If, by chance, it happens to pierce the fetal heart, blood can be drawn, but the fetal heart rate would certainly change. If such an event were to occur, how much force would be needed to pierce the floating fetal heart through the abdominal wall and uterine wall? Precise force and positioning would be required to even attempt to pierce it, making the technical requirements extremely high. Therefore, the probability of this happening is negligible. It is unlikely that the fetus was injured, or that the needle did not pierce the amniotic fluid, resulting in the extraction of placental blood.Recommendations: Do not worry too much and wait to see. If there is no abdominal pain, and the fetal heart rate and fetal movement are normal, then there should be no problem. If you are still concerned, you can undergo an ultrasound examination. I hope this helps! Wishing your baby to be healthy, intelligent, and adorable!