the doctors booked me for this test not had one before does the results differ much from a peak flow test
spirometer : the doctors booked me for... - Asthma Community ...
spirometer
from my limited knowledge I believe it is a different type of test from a peak flow and can be used to test for copd as well as asthma
yes! It's a very useful tool for checking if there's an element of copd in your breathlessness - or not. If not then then thethey can continue to investigate.
Spirometery is a big breath in, expel air as fast and long as you can until no air left, done three times and best result used. It records a graph of your expiration, which will show how fast you can get the air out and how much air, your lung volume, the graph lines also tell them a lot about what condition you have and how it's doing. They will usually weigh you first, and measure height so they know the predicted results for a person without lung problems of same height/weight, against your result.
My line is never smooth, it looks zigzaggy as I have asthma and bronchiectasis and rarely have enough breath to get to the end of the recording time. I've been as low as 25%, but have also managed 100% at times. I'm usually about 60 - 80% predicted. It's a really useful tool for your consultant to make decisions about your treatment in line with what you also tell him about how you are managing. xx
My normal peak flow at home when I'm feeling ok, is usually between 420 and 470, have occasionally hit 500. When I do the spirograph in hospital, it's anywhere between 350 and 450, the air ambulance usually lands right outside of respiratory and it's on a busy with Traffic roundabout which sets me off, my reading goes down if the ventolin hasn't kicked in. I remind the consultant about this when I go in to see him.