Asthma- is 400 a good peak flow?

[gandalf456]

I am 51 and 5 ft 8.

I have also got an oxygen monitor which swys my SATS are 96

Doesn't seem particularly low for your age and height (assuming youre female)- this chart is useful

Thanks 😊

Awful for me - I usually call the GP below 550 and get steroids below 500. I usually blow 620.

Everyone is different though.

I think with peak flow you need to keep a log so you know when you dip. So for me 400 would be normal but if I went under 300 then I would know something is not right. My dm has breathing issues and her normal day to day reading would be under 300 and so if she dipped under 200 she knows she needs seeing by the GP for medication.

I found that chart too!

It's worth saying that it really depends on your body - my peak flow is currently 310; my height and age suggest that it should be around 430, but I've never managed above 330 and my asthma is currently under good control and not restricting my life at all. I'd need a lung transplant to improve my peak flow any further. I know the peak flow measurements I need to take action at, and let's just say that 400 doesn't feature!

Your oxygen SATS are healthy too, so you probably don't need to worry.

Found this as well: www.mdapp.co/peak-flow-calculator-76/

I'm 49, 5 foot 5 and can only really reach about 390 on one of those things. I don't have asthma or breathing issues as far as I'm aware, don't smoke etc and only tested myself as my son has used one during covid and we were all having a go.

I think mine is a little low for my age but I am quite short in the body. My SATS were 100% last year when I had a short stay in hospital for a hand injury so I'm not too concerned.

I think it's an 'average" anyway.

With peak flow you need to take a baseline when you are at your healthiest, then base any comparisons on that. People vary enormously and it isn't just about height and age.

On a good day mine is 450. My asthma plan is that I see a GP if it goes down to 325, if it goes below 250 I go straight to A&E.

I'm normally just over 400.

It would be for me - I never get past 350.

This is me exactly also.