Don't get death for atleast 500 years zach. Tonnes of Decades requires you ❤

Literally you are the light of my medical life 😭♥️( thanks for being the bestest teacher ever )

some day, you'll be nominated for a Nobel Prize in medicine, for discovering an effective, succinct, and digestible way to teach medicine to aspiring and current doctors, PAs, nurses and technicians, and vicariously saving millions of lives...

I usually do not comment on any videos. This is the first time you made you me to log in to my youtube account to just Thank you for explaining it such a easy way. You are the Legend. Hats off to you !

every single video I watch really helps me prepare for my lectures as well as review after. They are AWESOME. highly recommend the notes/subscription. I'm in CRNA school and it is a little bit less of a struggle with your help. Thank you!!!

Just in time for my PFT exam! ❤ you guys!

Omg! Thank you so much. You simplified it really well ❤

You are a blessing!

So helpful! Thank you!

Thanks for the video!

I just want to leave a comment for you ! Although you deserve even more , you are making students life ❤. I want to say thank you 😊 ❤ . Real hero who is helping costs infinity 😊

this is great!! so much better than my prof teaching it!! I'm an RT student and would love it if you could do any videos about SABA, LAMA, SAMA, LABA, ICS meds

Great explanation 👏🏼❤

The great professor zach🙏

great explanation

Thank you so much for the great video

Thank you so much!!

its just so so so good

The greatest alive♥️♥️

I love this mannnnnn❤❤❤❤❤

Great job

Great bro,Thank you❤

You are a legend 💙💙

Thank you

thank you ninja nerd

Thank you so much sir

I will appreciate you forever

THANK U

Comment ✔ I am in mbbs 1st year but in my free time instead of any so called fun hobby, i just goes to ninja nerd and click to a random video because it doesn't really matter , you can make an infant to understand the concept who just learn to speak language, # Keep up what you care for @ Zack💓❤‍🔥

❤❤❤❤ you are amazing 👏

Thank youu

Awesome

The best in the world❤

Could you please make videos about more detail on each test?😊

God bless you

Thanks for the info and great videos! I have had asthma my whole life and feel like my lungs are working better than ever. I'm trying to understand my numbers from a recent PFT (done for another reason). My recent FEV1/FVC on a test was 64%. I feel like my lungs are super reactive and am 100% sure I have been dealing with asthma for the past 40 years, as diagnosed. I am allergen, exercise, and cold-induced and will wheeze loudly when triggered. I reacted so strongly to the methacholine challenge in the past that they shut down the test after the 1st lowest dose. I have been hospitalized in exacerbations where I needed IV steroids to get my lungs to work again. (I am a triathlete, so I exercise quite a bit, which I think has helped my lungs over the years.) But, for whatever reason, my change after a breathing treatment was only 8%. So, not asthma? If I felt like my lungs were working well before the administration of the albuterol. If my asthma was acting up, I would have expected a bigger change after the breathing treatment. But, not when I feel like I am breathing well. (Apparently, 64% is feeling well for me.) Why is the bar set at 12%? It seems to me that the change would depend on how constricted the airways were beforehand.

thanks :)

Favt teacher

🙌🙌🙌 you rock!

Good video, the only suggestion I'd give is that current ATS changed their post bronchodilation significant response value to 10% or greater.

New things I learn't (for my own future reference) : * the volume loops in spirometry start from 0 which is to the right, hence in restrictive diseases, graph shifts to the right, and loop is smaller from reduced TLC. COPD, graph shifts to left and has kink. Also COPD has increased TLC from the hyperinflation. * If patient comes in with a resp. illness, do spirometry and peak flow meter tests. Those tell you if its obstructive or restrictive diseases (correlate with clinical history and exam). -> If COPD, then extra step here is to give them SABA to see if their FEV1 improves by 12%. If yes then thats asthma, if not then thats COPD -> Next common step in both obstructive and restrictive, is to give them CO and then see how much they exhale. Tells u how much CO is passing into alveoli. Thats the DLCO. If DLCO is low, thats narrows down the diagnosis. If suspicion was obstructive, then low DLCO indicates emphysema over chronic bronchitis. If suspicion was restrictive, then low DLCO indicates that its ILD - interstitial lung disease instead of an extra-pulmnoary cause eg. pectus excavatum etc. * One thing that was not discussed here was the AA gradient. Thats a good indicator to tell what the cause of hypoxaemia is (O2 sat less than 94%). AA gradient = dif. if O2 partial pressure b.w. alveolus and arterial blood. In a perfect world, all the O2 from alveolus would go to artery so AA gradient would be 0. But normal AA gradient is positive, and somewhere bw 5 and 15 (increases as you age, I guess because less O2 able to enter artery). Exact ideal AA = 2.5 + 0.21xage. If person is hypoxaemic, then AA gradient is higher, means some sort of V/Q mismatch exist obviously. Eg. asthma, COPD, bronchiectasis, cystic fibrosis, interstitial lung diseases (ILDs), and pulmonary hypertension etc. If hypoxaemia is present but AA gradient is normal, means diffusion seems to be fine, and cause of low O2 in blood is that less O2 is reaching the alveoli = hypoventilation mainly. Or could be that ur at mt. everest and the O2 in air is too low.

these are too good to be available at free of cost.

Correction * RV + ERV = Functional residual capacity (FRC). This will increase in obstructive lung diseases and decrease in restrictive ones. TLC will remain the same however.

My broo❤❤❤

the criteria you used for interpretration is old and not recommended anymore ,now the ATS and URS recommend to used LLN and Zscore and not used fixed precentage

Cooool baby

❤

I just feel like all of us listening to this ar

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🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩

😄😍😍

🤩😘😗

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