The Breath of Life: Demystifying the Ventilation-Perfusion Ratio in Respiratory Physiology! | MBBS |

What is the normal V/Q ratio? What is the effect of gravity on this ratio? What will be this ratio in the condition of weightlessness? Watch the video for the answers.

Dive into the intricate world of respiratory physiology as we unravel the concept of the ventilation-perfusion ratio. This video is your gateway to understanding how our lungs optimize the exchange of oxygen and carbon dioxide to sustain life. We'll explore the dynamic relationship between ventilation (airflow) and perfusion (blood flow) in the lungs, and how imbalances can impact respiratory health. Whether you're a medical student, a healthcare professional, or simply curious about the mechanics of breathing, this video provides a comprehensive and enlightening guide to the ventilation-perfusion ratio. Join us and breathe in the knowledge of how our bodies maintain the delicate balance of respiration!

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[luna.kashyap]

Today I'm a pulmonary medicine resident ....and I have been sir's student since mbbs 4ty year when I started preparing for my entrance as a resident made me rise in physiology and subsequently medicine ❤🙏

[prajjwalsankle]

Sir u r a best physiology teacher that i have been

[physiomedicine]

Can you explain all this but in supine posture?

[tsaini]

Sir i have couple of ques to ask..
1.Why does the ventilation Increase down the lungs..??
2.Is there any relation between V/q ratio & size of alveoli..??
3.in case of physiologic shunt why does the Alveolar pO2 in normal istead of it should be more as the alveoli at base are small & so there are capable of inhaling more air..??

[chandreyeesinha]

Another question is
Ambient pressure at which plasma water will boil spontaneously?
Is it 47mm hg?

[shanmukhv]

Sir if at base of lung there is decrease surface tension and increased compliance... Sir, then Will increased compliance doesnt lead to increased ventilation?

[rahuldudwe]

Sir what will be the effect on ventilation and perfusion when alveoli are compressed due to weight of lungs,

[MN-irbi]

So in case of zero gravity there will be no physiologic dead space n shunting? V/q ratio will be same throughout lungs?

[tibayounis]

Sir ; in alveolar ventilation coupling
increase perfusion due to increase cardiac output so the ventilation must be increse due to increase perfusion what cause this ??

[chandreyeesinha]

Sir U gave an mcq in class
Helium dilution method was used to measure RV. Initial He conc =10%, Final He conc=6%.
Volume of spirometer= 2L. How much is RV.
U didnt explain how to calculate