✨High Altitude Physiology is quite complex. In this video I've made an attempt to briefly summarise and explain some of the changes that happen with focus on points that are usually needed for the USMLE Step 1. I hope it helps you with studying! 😊
🔢 The numbers used in this video are only to illustrate the reduction in barometric pressure and so, oxygen for explanation purposes.
🌟What's in this video?
0:00 - Intro
0:27 - Changes in inspired air
1:18 - Changes in Ventilation (O2, CO2, Chemoreceptors)
3:55 - Changes in Circulation (Hypoxia Inducible Factors, Erythropoietin)
5:21 - Changes in tissues (Oxygen Dissociation Curve)
5:47 - Hypoxic Vasoconstriction
✨ Other videos you may need :
🔅Gas Exchange Principles: kzfaq.info/get/bejne/d6ugg7mVtczFfJ8.html
🔅Oxygen Hemoglobin Dissociation Curve: kzfaq.info/get/bejne/qJNhactznJylop8.html
🔅Respiratory Regulation | Part 1 | Centres of Respiration:
kzfaq.info/get/bejne/jdyfgrKQ392omJc.html
🔅Respiratory Regulation | Part 2 | Chemoreceptors : kzfaq.info/get/bejne/sNCDddeDz82qmnk.html
🔅Respiratory Response to Exercise: kzfaq.info/get/bejne/ibqKis5pxJqReYU.html
💫 For more videos like this, subscribe to my channel!
Byte Size Med: kzfaq.info/love/ZghvlgylH3r_CWfA18eFRg
📚Factual References & for Further Reading:
- Guyton and Hall Textbook of Medical Physiology
- Gray’s Anatomy for Students
- Ganong’s Review of Medical Physiology
- Costanzo’s Textbook of Physiology
- First Aid for the USMLE, 2020 edition
- Openstax Anatomy and Physiology
openstax.org/details/books/anatomy-and-physiology
- Openstax Biology
openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.