Foramen ovale and ductus arteriosus | Circulatory system physiology | NCLEX-RN | Khan Academy
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- čas přidán 4. 12. 2012
- Watch how the fetal heart allows blood to simply bypass the lungs altogether using the Foramen Ovale and the Ductus Arteriosus! Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.
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thank you so much--i'm a nursing student and this has helped me understand the basics of fetal circulation as it relates to the pathophysiology of congenital heart defects. love it!
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Thank you so much, may God bless you
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Before I read my pediatric nursing book over the fetal heart I had to find a visual of how it worked. Your video is perfect. Thanks!!!!!!
genius! the only way I was abe to understand the foramen ovale!
I was luckily watched this video the night before my license exam. And for sure found the question related there. What a blessing. Thank you so much!
sharing this with all my fellow nursing students! Your 15 minute lecture was great! totally understood it better than in my sit in class.
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EXCELENT! THANKS
This is really useful and helps make paediatric cardiology much simpler (I'm using your video as revision) Thank you!
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It's written in every Embryology book, that's not a big deal to understand this. Ductus arteriosus Botalli: Anastomosis between Lung truncus and Aorta. Foramen ovale: Hole between left and right Atrium. Both are physiological and close during brith normally (Foramen ovale closes due to increase of pressure in small circulation system, both septums (primum and secundum) are compressed to each other and close the Foramen ovale). Sometimes the obliteration and closure does not happen. Sometimes these Shunts are the only thing, that sustain the life of the newborn. It depends of the defect combinations. BTW: Before the Foramen ovale is created, the blood flows throw the Ostium primum and secundum to the other Atrium.
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Excellent presentation and illustration!
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Thanks to you I can still attend my final even I jumped the lecture about fetal circulation…..
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Jamie Hodes My name is Rishi Desai and I work at Khan Academy. If you're willing to share a bit about your experience as a PA student, please send us your email address so we can reach out to you. Thanks in advance!
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I had a stroke in 2008, consequently a PFO closure surgery. I was 39 years old.
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Where does the blood from the left atrium go? Does it continue to the LV and then into the aorta?