The U.S. Food and Drug Administration (FDA) warns that hand-held Dopplers "should be used only when medically necessary and only by or under the supervision of a healthcare professional. For example, your licensed physician would use the Doppler to listen to your baby's heartbeat during your prenatal visit.
You can buy your own Doppler and use it at home to test your baby's heartbeat, but it's not as easy as it looks. The long-term effects of repeatedly exposing babies to ultrasound from these devices are not known.
It works like this: a Doppler probe announces a high-frequency sound wave that travels across your skin and tissue into the baby. When the waves encounter movement (such as your baby's heart beating), they bounce back into the device. The device then converts the movement into motion, which the machine expands so you can hear it.
It's not easy to tell where the sound is coming fromThe problem is that anything that moves inside you (whether it's your baby kicking, air activity in the intestines or blood activity in the arteries) is also converted to motion. It takes a lot of practice and maneuvering to differentiate your infant's heartbeat from other motions. The inability to differentiate between heartbeats can lead to unnecessary distress. And even if you do find a heartbeat, it is unlikely that you will be able to recognize a change in rhythm or tempo that may indicate a problem.
There are better ways to keep an eye on your baby's manifestations. As soon as you can regularly feel your baby move, pay attention to their movements. Assuming you notice a reduction in activity, call your physician or midwife immediately.
Baby has never had fetal movement, often make pregnant mothers very serious, so there are many pregnant mothers will buy a fetal heart monitor to listen to the fetal heart, but pregnant mothers in the use of the fetal heart monitor , the baby mothers also have a lot of questions, worried about the fetal heart monitor on the fetus has radiation, so often use Doppler to listen to the fetal heart to the baby has an impact?
To use the quality of the fetal heart instrumentpregnant mothers during pregnancy using Doppler to listen to the fetal heart, can be accurately detected to the baby's fetal heart, generally will not affect the baby, and Doppler fetal heart instrument in the international community is also common, the quality of the fetal heart instrument to listen to the fetal heart safety issues are ensured.
Secondly, pregnant mothers a day to listen to a few times the fetal heart is not absolute, but there is a bad birth history, gestational hypertension, fetal position and other problems pregnant mothers , the need to increase the number of times the fetal heart monitoring, assuming that the detection of the fetal heart, found that the fetal movement and the fetal heart rate anomalies, the need to go to the hospital for examination and treatment.
Finally, the frequency of the use of fetal heart rate needs to be determined according to the use of pregnant mothers, pregnant mothers 12 weeks of pregnancy on the beginning of the use of fetal heart rate, but this time the use of a day can be. mid-pregnancy fetal movement, can be combined with fetal movement during pregnancy to use the fetal heart rate meter, assuming that the fetal movement is more regular pregnant mothers, can be 2-3 days to use a fetal heart rate meter, but to the late stages of pregnancy, the fetus is relatively large, you can appropriately increase the number of times the fetal heart rate meter used.