• The easiest way to order a Sweet Pea Sound Waves Doppler is right online. Click here to place your order.

    You may also order a Sweet Pea Sound Waves Doppler by e-mailing us at info@sweetpeasoundswaves.com. The required information is: your name, mailing address, home phone number, and credit card number with expiry date. We will confirm receipt of your email order as soon as we receive it.

  • To date, extensive research has found no adverse effects of using Doppler technology.  It is completely safe to use on a regular basis.
  • Don’t panic… Heart rates can be difficult to find, especially in the first trimester. Here are some tips we recommend trying:

    • In early pregnancy (before 4 months or 16-18 weeks) a full bladder may make finding the heartbeat a little easier.
    • Use plenty of Sweet Pea Sound Waves Doppler gel in order to prevent any air bubbles from forming between the skin and the probe.
    • It is important to keep the entire probe face in contact with the skin surface. Holding the probe in this manner allows you to obtain the best possible sounds.
    • If no light comes on, make sure the battery is properly installed and still functional.
    • Place the probe on each side of the abdomen in turn about 1 or 2 inches off the mid-line. Try angling the probe up then down and to the side. Choose the spot where the signal is heard the best.
    • If you hear a signal at the same rate as your heart rate (around 70 beats per minute) you are picking up blood flow in your vessels or the placeuter. The baby’s heart rate is roughly twice as fast as yours. Usually the heart beat is best heard on the opposite side to where you feel kicks.

    At your next Prematernal visit watch where the doctor or nurse picks up the signal. Take your Sweet Pea Sound Waves unit with you and try it out

  • The Sweet Pea Sound Waves Doppler unit listens to reflections of small, high frequency sound waves that are reflected by movement of the fetal heart. These sound waves, called ultrasound, are generated by microscopic vibrations of a crystal similar to that in a quartz watch. The crystal vibrates back and forth about two million times each second. Since high frequency sound waves do not travel readily through air, a liquid such as water, oil, or special gel (ultrasound lotion) is applied to the mother’s belly in order for the Doppler to detect these sound waves. These signals are picked up by the Doppler and processed and amplified so that they are audible in the instrument’s speaker or earphone and you are able to hear your baby’s heartbeat.

  • In most cases, fetal heartbeats can be detected between 10-12 weeks and onward. However, it is recommended that most women wait until at least the 12-14 week range since it can be difficult to locate the fetal heartbeat earlier.

  • The baby’s heartbeat is usually around 160 beats per minute in early pregnancy and around 120 beats per minute nearer to term. This is almost twice as fast as your own heart rate. It is not unusual to hear accelerations in heart rate with baby movements. Transient slowing of the baby’s heart rate also occurs but is less common.

  • When the battery is running low, the light will begin by flashing slowly. At this point you can still use the Doppler for some time. As the battery becomes too low, the light begins blinking more rapidly and will eventually shut the Doppler off. The Doppler unit requires regular 9 volt batteries that can easily be replaced by removing the small panel in the back of the Doppler.

  • You can order more from us at a cost of $3.50 for a 60g tube or $9.50 for a 0.25L bottle (not including tax or shipping). Click here to place your order for more gel.

  • Yes, by connecting the Sweet Pea Sound Waves Doppler to your computer or another recording device (using a 1/8″ stereo to 1/8″ stereo cord). Connect one end to the washed head phone output on the Sweet Pea Sound Waves Doppler and the other end to the line in on your computer. If you are using your computer, then just record the heartbeat by using an audio recording program like Windows Sound Recorder.

  • No not necessarily. It is very possible to hear the heartbeat in more than one place especially later on in pregnancy. If you are picking up a heartbeat in two locations at roughly the same rate (within 10 bpm or so) then assume its just a single baby’s heartbeat in two places. However, if you are picking up a heartbeat in two locations at drastically different beats per minute (ie: one is 130 and one is 160) then that may be more of an indication of twins. The only way to really know if you are having twins though, is through an ultrasound.

  • No you do not need to have your doctor’s approval to rent a doppler in Canada, no prescriptions or referrals are necessary. However you may find it helpful to bring your doppler to your next visit so that your doctor can assist you with proper use. And we always recommend that our customers discuss renting or purchasing a doppler with their care provider if possible.
    We receive many referrals from doctors and midwives, doppler use is considered to be a safe and effective way to help ease pregnancy concerns.

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