
09080 Issue 1
9Page of 32
ENG
ALPHA - Instructions for Use
d. Repeat for a minimum of three manoeuvres, usually no more than eight
for adults.
e. Check VC repeatability and perform more manoeuvres as necessary.
Note: A single-breath VC technique may also be performed on the device.
FVC test session:
a. Inhale completely and rapidly with a brief pause when your lungs are
completely full (≤ 2 secs).
b. Exhale with maximal effort until no more air can be expelled while
maintaining an upright posture.
It is vital that the operator encourages the subject to keep exhaling to ensure all
air is expelled (when a plateau has been reached or forced expiratory time (FET)
reaches 15 seconds). The operator should repeat instructions as necessary,
coaching vigorously
c. Breathe in with maximal effort until completely full. The manoeuvre is
now complete and the BVF is removed from the mouth.
d. Listen for two beeps. This indicates that device is ready for the next blow.
e. Repeat for a minimum of three manoeuvres, usually no more than eight
for adults.
f. Check FEV1and FVC repeatability and perform more manoeuvres as
necessary.
Note:A single-breath FVC technique may also be performed on the device.
3.2.2. Saving the Test Session
1. Select ‘Post Mode’ from the main menu using the keypad.
2. Select ‘Save Current Subject Pre Test’ from the post mode screen
using the keypad. An information dialog box will appear showing the
memory location where the test session will be saved. There are nine
memory locations on the ALPHA. The best three tests will be saved.
Note:If a Compact Flash card is inserted into the Compact Flash connector at
the right side of the device, then all test blows and not just the best three will be
saved to the compact ash card. Results are saved as per the format outlined in
the ERS/ATS Task Force Report on Standardisation of Lung Function Testing
(2005)2.
3.2.3. Bronchodilator Responsiveness Testing
A Bronchodilator Responsiveness Test session can be performed on an
FVC test session following the administration of drugs. Post drug delivery
performance is measured versus pre delivery.
To perform a Bronchodilator Responsiveness Test select ‘Post Mode’ from
themain menuusing the keypad:
1. To perform a Bronchodilator Responsiveness Test on the Pre-test
Session just performed, select ‘Set Post Mode for Current Subject’.
The device will return to theMain Menuscreen with the text ‘Post
2 ATS/ERS Standardisation of Spirometry Eur Respir J 2005; 26: 319–338