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UNSW Embryology

Movie Human (12 weeks) Ultrasound Fetal Heart Rate

© Dr Mark Hill (2004)

Acknowledgements

Introduction

Movies show two different 12 week fetus ultrasounds. In the first movie, the beginning of the movies shows localization of the fetal heart. This is then juxtaposed beside a doppler reading of the heart. The fetal heart rate (in beats per minute, bpm) can be calculated by placing a marker at the start of one heart cycle through to the next, in this case 173 bpm. Note the disturbance in the second half of the trace due to fetal movements. In the second movie, fetal heart rate is calculated as 141 bpm (More? Notes- Fetal Heart Rate).

Quicktime movie: 12wkFHR.mov (2 Mb) in new window.

Quicktime movie: 12wk1FHR.mov (2 Mb) in new window.

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UNSW Embryology ISBN: 0 7334 2321 3

UNSW CRICOS Provider Code No. 00098G