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Stitch

FEV1/FVC ratio

Asked by Stitch 
22 Jun 2012
10 answers

I'm sure I must have known this in the past but blowed if I can remember what it's all about now, and can't find an explanation online. Does anyone know or have a good link to explain what it is, please?

Zoee 
22 Jun 2012
Hi Stitch, hope your visit with the doc went ok this morning.

FEV1 FVC ratio can be explained a little bit more if you scroll down this page:

www.patient.co.uk/doctor/Sp...


FVC

Forced vital capacity

Volume of lungs from full inspiration to forced maximal expiration. It is reduced in restrictive disease, and in obstructive disease if air trapping occurs.


FEV1

Forced expiratory volume in one second

Volume of air expelled in the first second of a forced expiration. Reduced in both obstructive and restrictive disease.

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anonymous 
22 Jun 2012

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Stitch
Stitch 
22 Jun 2012
Am tired and stressed so probably not comprehending properly but can't see the connection between this and my question?

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Stitch
Stitch 
22 Jun 2012
Looked at the link and can't find an explanation of the fev1/fvc ratio.

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anonymous 
23 Jun 2012

This comment has been deleted.

Stitch
Stitch 
22 Jun 2012
Thank you Zoee, yes, good result at doctors, thank you. Got the go-ahead for the gym. :)

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Zoee 
22 Jun 2012
Great news :) happy for you.

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tanyamarie
tanyamarie 
22 Jun 2012
great news, hope you enjoy urself and take care too x

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juliekkay
juliekkay 
23 Jun 2012
am told that ...
FEV 1 is the amount of air (by litres or part of litres) you blow out in one second;
FEV6 is the amount of air you blow out in 6 seconds;
FEV1/FEV6 is the percentage figure - so if it's .50, that means half the air blown out in the 6 seconds is blown out in the first second with the other half being blown out in the remaining 5 seconds.
if it's .25, that's a quarter of the air blown out in first second of the total amount blown out in 6 seconds, so three quarters is blown out in the other 5 seconds

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Stitch
Stitch 
23 Jun 2012
Thanks Julie xxx

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anonymous 
23 Jun 2012

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juliekkay
juliekkay 
24 Jun 2012
tried to find out about that and saw something that said FEV6 is approx same figure.

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anonymous 
24 Jun 2012

This comment has been deleted.

Walrus
Walrus 
25 Jun 2012
Forced Expiratory Volume or F.E.V

Forced Vital Capacity or F.V.C.

the volume of air that can be forcibly expelled from the lungs after the maximum amount has been breathed in, still no wiser ?

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