1, first of all, you need to tie two probes on the pregnant woman, one tied to the top of the uterus, is the pressure receptor, you can know whether there is a contraction response and the intensity of contractions, the other will be placed on the chest or back of the fetus, so as to detect the fetal heart through the mother's stomach.
2, after tying, in the fetal heart monitoring equipment on the screen there are fetal heart and contraction of the corresponding graphic display, the upper one is the fetal heart rate, the lower one is intrauterine pressure, in general, the fetal heart rate fluctuations between 120-160 times / min, the base heart rate is a wavy line straight line, the emergence of fetal movement, the heart rate will rise. And the line below it will rise during contractions and will then stay around 20mmHg.
3. The fetal heart monitor then traces the number of heartbeats calculated for each cycle of the fetal heart, in sequence, on a graph paper to show the baseline variation of the fetal heart. Within a certain range, the fetal heart baseline variation indicates that the central nervous system of the fetal heart is established for phytoregulation and cardiac conduction, and that the fetal heart has a certain amount of reserve power.
4, because the fetal heart monitoring is the use of ultrasound principle of fetal condition detection, so there will be no effect on the fetus, but because the fetal heart monitoring time will be in 20 minutes or so, so the mother-to-be in the fetal heart monitoring test should be avoided before hunger, and in the process of the test is best to choose a suitable posture.
What to pay attention to when doing fetal heart monitoring
1. Before doing fetal heart monitoring, you can have something to eat, which can stimulate the fetus to move more and make it easier for the fetal heart monitor to monitor.
2, if the process of monitoring the fetus did not move, it is very likely to be asleep, you can drink some water or juice, so that the fetus to move, you can also gently rub the belly, gently shake the abdomen to wake up the fetus can be.
3, do fetal heart rate monitoring to choose the most frequent time of day fetal movement, and to avoid unnecessary repeat monitoring.
4. It's a good idea to empty your bladder before you do it, because you may have to spend several minutes at the fetal heart monitor.
5, fetal heart monitoring, it is best to lie on the left side of the position, but also in the back of a cushion. In some hospitals, pregnant women will sit and lean on a chair to do fetal heart monitoring, and sitting on a recliner position is similar.
6, do fetal heart monitoring before the mother-to-be also need to maintain a good sleep, have a good state of mind and relaxed mood, to avoid great joy and great sadness, emotional fluctuations.
7, do fetal heart monitoring before, the diet should be reasonable, light, less strong tea and coffee, less chili curry and other stimulating food.