FEV1/FVC ratio in Obstructive vs Restrictive diseases | RS physiology | Med Madness
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- Опубліковано 21 вер 2024
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Reference : Guyton 13 E, international edition
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Awesome simple and clear explanation thank you😊
You are welcome
This has been the best explanation on the FEV1/FVC ratio. Thank you very much.🙏
Hugely underrated video. Great explanation thank you sir.
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thank you that was so simply explained and there was so much clarity on the topic.... Thank you. Bless
Crisp & clear Thank you
Beautifully explained. Well done.
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❤️❤️understood very well brother talk so much ..!
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Sir you're the best , thank you ❤️
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beautifully explained .Thanks
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Very clear explaination thx u sir
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It's very nice explanation sir keep it up
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Very clear thank you 👍🏻👍🏻👍🏻👍🏻
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very simple very helpful :) thank you
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Anderson George Jackson David Thomas Patricia
Fev1=52% fvc=60%
Fev1/fvc=87%
Muhje kiya hua hain obstructive ya restrictive please reply
Your spirometry results suggest a restrictive lung disease pattern. In restrictive lung disease, the FEV1/FVC ratio is usually normal or high, as seen with your ratio of 87%, but both FEV1 and FVC are reduced. For a definitive diagnosis and appropriate management, please consult with your healthcare provider
How did u know 6 litre is maximal air of lung volume? isn't it different number in each patient?or 6 is reference value for everybody.
For normal healthy adults , total lung capacity is 6 litres. It varies with age and diseases.
in Restrictive pattern , you say the ratio is more than 80 % or normal . which value is normal ?should it be exactly 80 % to be considered normal ?
The normal fev1/fvc ratio is 70 % ( this value is updated recently ) . In restrictive pattern, this ratio is 70% or greater than 70% . In obstructive disease , this ratio is less than 70% .
How could FEV1 ever be greater than FVC? Isn't that saying you are breathing out more in that first second than you breath out at all, which would be impossible? Like you can't breath out 3L in the first second if you only breathed out 2L total. Or am I misunderstanding it?
Hello , You can watch this 5 min PFT video . I ve explained this very clearly. If u still have doubt, let me know . I appreciate you
ua-cam.com/video/5frdK83Th74/v-deo.html
@@MedMadness Thanks for the quick reply! I think I understand the overall idea so I see how the % can increase, but I'm referring to what you wrote at 4:00. You put the FEV1 as 3 with the FVC as 2. That would make the ratio 1.5 or 150%. If I'm understanding it correctly, then that would be saying in the first second the exhaled 3L of air, but the entire volume of the FVC was only 2L which wouldn't make sense.
@@pohelloop Numbers are just an example to explain the ratio easily. In restrictive disease ( in this example ) FVC decreases from 5 to 2 and Fev1 decreases from 4 to 3 . This clearly shows that Fvc is more decreased than FeV1 because of the underlying pathology ( say fibrosis ) . Don't take the numbers as real . Thank you
@@MedMadness Ok, I see now. I figured I was probably taking it too literally, but I get what you're saying. The video does a great job at explaining it so thanks for that. Also, thanks again for responding to my question so quickly. I appreciate it!
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Superb video 🔥🔥🔥🔥🔥
Thank you . Glad it helped you
Can FEV1 be greater than FVC?
Comparatively
very nice
Hello, in VC volume test of my machine, it measures the following parameters below, but unfortunately it is not calculating TLC , RV, FRC, RV/TLC. So how can i calculate them? so my machine measures the following automatically: vital capacity,inspiratory volume,expiratory reservevolume,inspiratory reserve volume,expiratory vital capacity,inspiratory vital capacity,tidal volume,minute ventiation, resp rate,tidal inspiratory time,tidal expiratory time,total respiratory time, ti/te, ty/ti,ti/ttot,te/ttot. Which of these are importantparameter to decide restricitve or obstructive?
In restrictive disease, all volumes and capacities are reduced . FEV1/FVC ratio is 70 % or more. In Obstructive disease, residual volume, total lung capacity, functional residual capacity is increased. FEV1, FVC, ERV, IRV, IC, VC are all decreased. FEV1/FVC Ratio is also less than 70 %.
Rodriguez Scott Thomas Maria Robinson Jessica
Awesome video sir
Thank you , glad this video helped you
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Should we do spirometry test to covid patients to detect post covid fibrosis? Is that covid fibrosis different from restrictive lung diseases?
Yes, performing spirometry tests on COVID-19 patients can help detect post-COVID fibrosis. This is because spirometry can assess lung function and identify restrictive patterns, which are characteristic of lung fibrosis. Post-COVID fibrosis is a type of restrictive lung disease, similar to other forms of lung fibrosis, where lung volumes are reduced and lung compliance is decreased. thank you. let me know if you any more questions.
How do you get rid of those fibrosis?
Fibrosis can be challenging to treat and is often managed rather than completely cured. Treatment options may include antifibrotic medications such as pirfenidone or nintedanib, particularly for idiopathic pulmonary fibrosis. Addressing underlying conditions, such as controlling inflammation with corticosteroids or immunosuppressants, can also be beneficial. It's essential to work with a healthcare provider to determine the best treatment strategy based on the specific type and cause of fibrosis
At which dosis do we give bronchidilator for after dilation test?
For the bronchodilator test, commonly used doses are:
Salbutamol (Albuterol): 400 mcg (micrograms), typically delivered via a metered-dose inhaler (MDI) or nebulizer.
Ipratropium Bromide: 80-160 mcg, delivered via MDI or nebulizer. thank you. let me know if you have any more question.
How to treat lung fibrosis as GP?
thanks for your question. As a General Practitioner (GP), treating lung fibrosis involves a combination of approaches:
Referral to a Specialist: Lung fibrosis often requires specialized care. Refer the patient to a pulmonologist for detailed evaluation and management.
Medications: Prescribe medications like antifibrotic agents (e.g., pirfenidone, nintedanib) as recommended by a specialist.
Oxygen Therapy: Provide supplemental oxygen if the patient has low blood oxygen levels.
Lifestyle Changes: Encourage smoking cessation, healthy diet, and regular exercise to improve overall health.
Vaccinations: Ensure the patient is up-to-date with vaccinations like influenza and pneumococcal vaccines to prevent respiratory infections.
Pulmonary Rehabilitation: Recommend pulmonary rehabilitation to improve the patient's physical condition and quality of life. Let me know if you have any more doubts.
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How can fev1/fvc ration be more than 100
just an example to make understanding clear. thanks for watching