Resonance vs. Tactile fremitus vs. Breath Sounds

[fw5tape6kq]

I still don't really understand how these physical exam findings are supposed to help you discern the pulmonary pathology

Can anyone please explain WHY you see either increased/decreased resonance, fremitus, or breath sounds for different conditions? What is each parameter supposed to be indicating? Why, for example, do you see decreased fremitus with pleural effusion but increased fremitus with consolidation? Hoping someone has a good grasp of this and can explain it to me.

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[worldbeater]

I asked the same question to a professor once, he told me it has to do with the length of time the sound wave moves through the body. It takes longer to go through a solid(like consolidation) compared to a liquid(like pleural effusion), hence the increased fremitus(vibration).

That's how I understood it, I never confirmed it any book though.