What causes the child to have no fetal heart rate

summary

I believe pregnant mothers can find these methods in many places. However, after laborious pregnant with a baby, why do some of them have no fetal heart rate? No heartbeat, does it mean that the baby has stopped developing? Don't worry, you might as well explore with me.

What causes the child to have no fetal heart rate

First: fetal heart rate is the heartbeat of the fetus, generally in 17-20 weeks can be heard in the abdomen with a general stethoscope. Fetal heart rate in 120-160 times / min, sometimes faster, but also not very regular, to the end of pregnancy more regular. Sometimes there will be a short pause, or the speed reaches 180 times / min, which is a normal phenomenon. However, if this phenomenon occurs frequently and for a long time, it is necessary to seek medical advice in time. Normal fetal heart rate is regular and powerful, like clock ticking, 120-160 times / min. if it is less than 120 times / min or more than 160 times / min, it can be repeated every 10-20 minutes. If it is not normal, it indicates fetal intrauterine hypoxia. If fetal heart rate is abnormal and accompanied by irregular fetal heart rate, it indicates that fetal hypoxia is more serious.

Second: the normal fetal heart rate is between 120 / min and 160 / min. if the fetal heart rate is less than 120 / min or more than 160 points for more than 10 minutes, it indicates that the fetal heart rate is abnormal. Most cases of abnormal fetal heart rate are on behalf of fetal hypoxia in the uterus. The more serious the degree of abnormal fetal heart rate is, the more severe the fetal hypoxia is. However, not all abnormal fetal heart rate is caused by hypoxia. In addition to the above situations, the situation of pregnant women also affects the change of fetal heart rate. For example, pregnant women have fever, fetal heart rate often exceeds 160 beats / min, pregnant women have hyperthyroidism, and her heart rate is higher The heart rate is very fast, and the fetal heart rate is often more than 160 beats / min. if pregnant women take some drugs, such as shuchuanning taken during preterm delivery or atropine, the heart rate of mother and infant can be accelerated. Slow fetal heart rate may be caused by fetal hypoxia, but sometimes pregnant women take some drugs, such as propranolol, which act on the fetus through the placenta, causing fetal heart rate to slow down. When the fetal heart rate continues to be slow, we should pay attention to check whether the fetus has the possibility of congenital heart disease. In addition, after more than 40 weeks of gestation, due to the development of the fetal nervous system, the fetal heart rate can sometimes be lower than 120 beats / min. therefore, when the fetal heart rate is abnormal, we need to carefully analyze the situation, make correct judgment and treatment, if there is indeed fetal hypoxia, we should give birth as soon as possible.

Third: more than half of the common causes are caused by fetal hypoxia, such as umbilical cord lesions: umbilical cord torsion, umbilical cord prolapse, etc.; fetal factors: malformation, fetal intrauterine growth retardation, infection, multiple births, etc.; maternal lesions: prolonged pregnancy, pregnancy induced hypertension, cardiovascular disease, toxic shock, etc.; placental factors: placental abruption, placenta previa, etc. All of the above reasons can lead to the lack of oxygen supply to the placenta, which makes the fetus die of hypoxia.

matters needing attention

It is suggested that once pregnant women are found, they should immediately go to the hospital for examination and receive corresponding treatment.