What does fetal heart monitoring do?
The tool for fetal monitoring is a fetal monitor, which is formed by the principle of ultrasound Doppler and the changes of fetal heartbeat current. Fetal monitor is a kind of measuring instrument used to detect fetal heart rate and trace uterine contractions. In addition, it can also reflect the graphics of fetal heartbeat activity. It is one of the most common methods for monitoring intrauterine conditions of pregnant women.
The changes of the fetal heart are the manifestation of the normal development of the fetal central nervous system, which can very intuitively show the fetal reserve capacity and health in the abdomen. The electronic fetal heart rate monitor can continuously detect changes in fetal heart rate and uterine pressure, and can provide real-time information between fetal heart rate and productivity. Compared with manual auscultation, it is not affected by uterine contractions and can be viewed. Instant fetal heart rate changes.
Doctors can obtain timely and accurate information from the baseline fetal heart rate and different monitoring graphics, which can not only evaluate the real-time situation of the fetus, provide a basis for dystocia treatment, but also detect the reserve function of the fetus and whether it will occur. Symptoms such as severe cord entanglement. Therefore, fetal monitoring has a certain predictive value for the tolerance of vaginal delivery. Therefore, electronic fetal heart rate monitoring has the advantages of being fast, convenient, clear, and highly accurate, and is relatively easy to be accepted by pregnant women. It is one of the important measures to improve the quality of obstetrics, and it is worth trying and applying by pregnant women.
During the production process, abnormal CTG at various stages can be used as a signal of fetal intrauterine hypoxia. However, CTG itself has a false positive rate of 25% to 50%, which may have an impact on the status of fetal placental function. Currently, obstetricians are looking for new tests to be used in conjunction with CTG to monitor the actual condition of the fetus.
The most common are fetal scalp pH measurement, amniotic fluid monitoring, B-ultrasound biophysical score, arterial blood flow velocity test, etc. Many medical experts believe that the most reliable method of fetal monitoring during labor is a combination of CTG and biochemical tests. This is to find and identify whether CTG is abnormal and whether the fetus is hypoxic, thereby reducing the false-positive rate of CTG, eliminating unnecessary obstetric intervention, and reducing fetal mortality and early neonatal illness.
The coincidence rate of CTG predicting that the fetus is in good condition is much higher than predicting that the fetus has problems. When CTG is positive, it is necessary to refer to other data, such as whether the amniotic fluid is contaminated, the age of the pregnant woman, the pregnancy cycle, etc. It is necessary to consider the progress of the production process and the data of B-ultrasound monitoring to make the best treatment plan.
