Especially in the early weeks, before you’re showing and perhaps before you’ve seen your doctor (in the U.S., you typically get in to see an obstetrician or a midwife around eight weeks into your pregnancy), it can be agonizing not to know exactly what is happening in there. It’s easy to find online it’s easy enough to put the ultrasound gel and the transducer to your abdomen and it’s easy to understand why people would want to use these devices. The fetal doppler, at first sight, is a trifecta of ease. But that doesn’t mean that you can use one at home as easily as a trained ultrasound technician, doctor, or nurse uses one in the doctor’s office. ![]() The fetal doppler your doctor uses is pretty much the same as the one you can buy online and use at home-so similar, in fact, that Alexander says that if her office ran out of them, they’d probably just order more on Amazon. That’s the basic principles of how these devices work and why they’re so simple and inexpensive-because there’s not a lot of integrated circuitry or software that’s required.” “If it’s focused on the heart, it sounds like a galloping horse because the valves of the heart are moving. And the difference in the shifts causes the whoosh, whoosh, whoosh that you hear when you’re listening,” he says. “It’s an ultrasound that doesn’t have a picture,” says Tamika Alexander, MD, an obstetrician and an associate professor of clinical obstetrics and gynecology at the University of Illinois College of Medicine in Chicago. “Blood is going through the blood vessels and through the heart, and that’s what it’s picking up and that’s the sound that we hear.”ĭopplers are small handheld devices with a ’90s vibe: a small, often off-white plastic box with a simple screen and a wand, called a transducer, that the wielder drags over the belly in search of the baby’s heartbeat.Īccording to Joshua Copel, MD, a professor of obstetrics, gynecology, and reproductive sciences at Yale School of Medicine in New Haven, Conn., the device has two primary components (called “crystals”), one of which “is constantly sending out sound the other is constantly listening to the returning sound. Dopplers reflect high-frequency sound waves-aka ultrasounds-off the blood to approximate the sound of blood flowing through the veins. Sonoline B handheld audio baby heartbeat listening tool is the best quality equipment used by expectant mothers to hear and track their baby's heartbeat whenever they want, even when they are out and about! It is battery operated so it is fully portable and amazingly lightweight - with only 2xAA batteries required it can continuously run on for at least 10 hours.Fetal dopplers are a type of ultrasound machine that uses sound waves to “listen” to a baby’s heart. This is not a medical device and is sold as a baby heart sound listening tool for novelty purposes. ![]() This unit is equipped with an audio output for headphones or sound recorders. ![]() This heartbeat listener is suitable for use after the 12th week of pregnancy. It has three built-in modes that allow the user to view the heart rate in different display modes. The back-lit LCD Screen displays the baby's heart rate (FHR), and an audible sound is heard in real-time from the built-in high-quality speaker. ![]() This amazing device allows the baby's heartbeat to be heard with reduced static. The Sonoline B Handheld Pocket Fetal Doppler employs the latest technology in Baby Heart Sound Listening.
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