Functional Principle Of Doppler Fetal Heart Rate Monitor

The purpose of fetal heart rate monitoring is to monitor whether the fetal movement is abnormal and make corresponding treatment according to the fetal heart rate condition.
Examination time: after 14 weeks of pregnancy.
Examination objects: Pregnant women with abnormal/normal fetal movement.
Fetal heart rate monitoring The fetal heart rate is regulated by the sympathetic and parasympathetic nerves. By tracing the instantaneous changes in the fetal heart rate through the curve of the monitoring graph, we can understand the reaction of the fetal heart during fetal movements and uterine contractions, and infer whether the fetus in the womb is defective. oxygen.
In normal pregnancy, fetal heart rate monitoring should be done once a week starting from the 37th week of pregnancy. If there are complications or complications, it can be done from the 28th to 30th week of pregnancy. You should pay attention to whether the rhythm of the fetal heart sound is fast or slow. The normal fetal heart sound is 120 to 160 beats/min. If the fetal heart sound is more than 160 beats/min or continues to be 100 beats/min, it means intrauterine hypoxia. Get prompt treatment.