Ultrasound - Fetal Heart Rate

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Embryology - 9 Dec 2019    Facebook link Pinterest link Twitter link  Expand to Translate  
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Measuring the fetal heart rate from ultrasound.

Fetal Heart Rate from Ultrasound

This movie is a realtime ultrasound recording of the week 12 fetus using doppler to measure the fetal heart rate.

  • The transducer is initially moved to locate the fetal heart (shown in the upper panel).
  • The transducer is positioned to record through the heart and the changes in response to heart contraction are recorded in real time (shown in lower panel).
  • A region in the recording that shows 2 sequential contractions is then identified and the distance between these 2 points can be used to calculate the heart rate (BPM, beats/minute).
  • Note that at the end of this recording a large artefact generated by fetal movement during the recording.


Listen also the audio recording of an older fetus heart sounds [[Fetal_Heart_Sounds_Audio|Fetal Heart Sounds week 15 (GA Week 17)]].


Links: MP4 movie | MP3 Audio | Fetal Heart Sounds Week 17 | Heart Rate Development | Cardiovascular System Development | Ultrasound | Movies


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Cite this page: Hill, M.A. (2019, December 9) Embryology Ultrasound - Fetal Heart Rate. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Ultrasound_-_Fetal_Heart_Rate

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G