What is fetal heart rate monitoring?
summary
Fetal heart rate monitoring is the abbreviation of fetal heart rate, fetal movement and uterine contraction diagram. It is a graph that uses the fetal heart rate electronic monitor to record the fetal heart rate curve and uterine contraction pressure waveform for clinical analysis. Fetal heart rate monitoring can be divided into medical and family fetal heart rate monitoring: the hospital fetal heart rate monitoring included in the monthly pregnancy check-up after 12 weeks, and the family fetal heart rate monitoring of the pregnant women through the home fetal heart rate meter.
What is fetal heart rate monitoring?
When doing fetal heart rate monitoring in the hospital, it is carried out through two probes tied to the pregnant woman. One is tied to the top of the uterus, which is a baroreceptor. Its main function is to understand whether there are contractions and the intensity of contractions; The other is placed on the chest or back of the fetus to measure the fetal heart rate.
The screen of the fetal heart rate monitor has the corresponding graphic display of fetal heart rate and uterine contraction, which will display two main lines, one is the fetal heart rate, the other is the intrauterine pressure. Under normal conditions, the fetal heart rate fluctuates between 120-160 beats / min. generally, the basic heart rate line is a straight line, and the heart rate will rise when fetal movement occurs; The lower line will increase during contractions and then maintain about 20mmhg.
The fetal heart rate monitor records the number of heart beats calculated in each cardiac cycle of the fetal heart rate on the drawing in order to show the baseline variation of the fetal heart rate. Within a certain range, the baseline change of fetal heart rate indicates the establishment of central nerve autonomic nerve regulation and cardiac conduction function, and the fetal heart rate has a certain reserve.
matters needing attention
Stethoscope monitoring: the price of stethoscope is relatively low, but there are certain technical requirements for finding the location of fetal heart rate. The fetal heart rate is small, so it is not easy for ordinary people to find it; Fetal heart rate hearing should be conducted under the guidance of professionals.
