Cardiovascular System - Heart Rate Development: Difference between revisions
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* Stage 16 10 mm embryo EHR at least 120 beats / minute | * Stage 16 10 mm embryo EHR at least 120 beats / minute | ||
* Stage 18 15 mm embryo EHR at least 130 beats / minute | * Stage 18 15 mm embryo EHR at least 130 beats / minute | ||
==Ultrasound Measurement== | |||
{| border='0px' | |||
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| <Flowplayer width="672" height="540" autoplay="true">Week12_fetal_heart_rate.flv</Flowplayer> | |||
| valign="top" |This movie is a realtime ultrasound recording of the week 12 fetus. The bottom window shows doppler analysis to measure the fetal heart rate. | |||
:'''Links:''' [[Quicktime_Ultrasound_-_Fetal_Heart_Rate|Quicktime]] | [[Ultrasound_-_Fetal_Heart_Rate|Flash]] | |||
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|} | |||
==References== | ==References== |
Revision as of 07:23, 27 November 2010
Introduction
Some Recent Findings
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Textbooks
- Human Embryology (2nd ed.) Larson Ch7 p151-188 Heart
- The Developing Human: Clinically Oriented Embryology (6th ed.) Moore and Persaud Ch14: p304-349
- Before we Are Born (5th ed.) Moore and Persaud Ch12; p241-254
- Essentials of Human Embryology Larson Ch7 p97-122 Heart
- Human Embryology Fitzgerald and Fitzgerald Ch13-17: p77-111
Embryonic Heart Rate
In a 1996 study normal successful human gestations were defined by EHR criteria at different early embryonic (34-56 days from last menstrual period) developmental stages (at the earliest stages when embryo length is difficult to measure gestational sac diameters are included). [2]
- Stage 9-10 2 mm embryo (gestational sac diameter of 20 mm) EHR at least 75 beats / minute
- Stage 11-12 5 mm embryo (gestational sac diameter of 30 mm) EHR at least 100 beats / minute
- Stage 16 10 mm embryo EHR at least 120 beats / minute
- Stage 18 15 mm embryo EHR at least 130 beats / minute
Ultrasound Measurement
<Flowplayer width="672" height="540" autoplay="true">Week12_fetal_heart_rate.flv</Flowplayer> | This movie is a realtime ultrasound recording of the week 12 fetus. The bottom window shows doppler analysis to measure the fetal heart rate.
|
References
Reviews
<pubmed>20418904</pubmed> <pubmed>19732619</pubmed> <pubmed>17569640</pubmed>
Articles
<pubmed>20595708</pubmed> <pubmed>20492379</pubmed>
Search Pubmed
Search Nov 2010 "Embryonic Heart Rate" All (7589) Review (405) Free Full Text (794)
Search Pubmed: Embryonic Heart Rate
Glossary Links
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Cite this page: Hill, M.A. (2024, April 23) Embryology Cardiovascular System - Heart Rate Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Cardiovascular_System_-_Heart_Rate_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G