Why spontaneous Pneumothorax has Hyper-resonance

[phd89]

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In tension pneumothorax air gets trapped in lung so i get why that has hyper-resonance but why is it also in spontaneous pneumothorax, I thought that the lung would collapse on that side and deflate so there would be dec air on that side and dullness? can someone explain

 

[illegallysmooth]

In tension pneumothorax air gets trapped in lung so i get why that has hyper-resonance but why is it also in spontaneous pneumothorax, I thought that the lung would collapse on that side and deflate so there would be dec air on that side and dullness? can someone explain

Air isn't getting trapped IN the lung during a tension pneumo. Air leaks from the collapsed lung into the pleural space. You have a big pocket of air in the pleural cavity, that's why it's hyper resonant. Same concept applies during non-tension pneumo, the only real difference is severity

 

[phd89]

Air isn't getting trapped IN the lung during a tension pneumo. Air leaks from the collapsed lung into the pleural space. You have a big pocket of air in the pleural cavity, that's why it's hyper resonant. Same concept applies during non-tension pneumo, the only real difference is severity

sorry yeah thats what I meant it just came out wrong not in the lungs but pleural space thats for tension pneumothorax but I still don't understand your explanation about spontaneous ( i guess nontension) pneumothorax

how does air get into the pleural cavity in spon pneuo, I know in tension it is due to chest wall trauma but what about in spontaneous pneuo? Rupture of bleb, is that air that was already in the pleural space but hidden in a pocket?????

 

[LuckiestOne]

Air leaks out of the little bleb every time you breathe in and fills up the pleural cavity just like the tension pneumothorax

 

[Dallas]

Its like a tension pneumothorax but the entry wound into the pleural space isnt in the chest wall, its through your bronchi.

 

[Phloston]

Random practice question fact: the greatest airway resistance occurs in the medium-sized bronchi.

 

[Dallas]

Because the smaller airways start to branch out and form clusters of alveoli and since theyre so numerous they lower resistance!

 

[alternatego]

Random practice question fact: the greatest airway resistance occurs in the medium-sized bronchi.

I always make the correlation with arterioles, helps me remember it

 

[phoenix89]

I always make the correlation with arterioles, helps me remember it

Do arterioles have the greatest resistance of all vessels?

I know capillaries have the highest cross-section, veins have the highest compliance.

 

[Dallas]

Do arterioles have the greatest resistance of all vessels?

I know capillaries have the highest cross-section, veins have the highest compliance.

Yes they do. Interestingly, capillaries have the lowest resistance, thanks to the cross sectional tidbit you just mentioned.