Fetal Heart Sounds Audio

From Embryology

Human Fetus (GA 17 week) heart beat

This audio only is a realtime recording of the [[Timeline_human_development#Second_Trimester|week 15 (GA week 17)]] fetal heart rate and heart sounds.

<mp3player>File:Week17 fetal heart rate.mp3</mp3player>

The characteristic "lub-dup" sounds are associated with closing of heart valves.

  • First sound (lub) occurs as atrioventricular valves close and signifies beginning of systole (contraction).
  • Second sound (dup) occurs when semilunar valves close at the beginning of ventricular diastole (relaxation).
Links: MP4 movie | Ultrasound Week 12 Heart Rate | Heart Valve Development | Heart Rate Development | Cardiovascular System Development | Ultrasound | Movies

Heart Valves

There is both a tutorial and development information page for cardiac valve development.

Atrioventricular valves Semilunar valves
AV Valves.jpg Semilunar Valves.jpg


Reference

Thanks to Debra Copeland, for providing fetal heart beat audio for public use.


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Cite this page: Hill, M.A. (2019, June 26) Embryology Fetal Heart Sounds Audio. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Fetal_Heart_Sounds_Audio

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