eResearchTechnology GmbH AM3G01 User Manual

Page 12/42

Peak Flow Meter AM3 - Instructions for Use for Trial xxx

Version 00.03 • Date 04NOV2013

2.2.2  Performing Scheduled Sessions

Scheduled sessions, including questionnaire and PEF measurements, can only be 
performed and stored using programmed subject devices. Following the study 
protocol, the subject has to carry out two scheduled sessions per day. 

The subject can scroll through and select the appropriate answer by using

 and

 buttons and pressing

.

At the end of the questionnaire the subject is asked, if he/she wants to change an 
answer; if the subject selects “Yes“, the questionnaire will be displayed again.

The answers previously entered will appear as default, and can be modified as 
described above. After answering the last question, the subject should complete 
the three PEF measurements. 

2.2.3  How to Perform PEF Measurements with the AM

To perform a valid PEF measurement with the AM, the following steps must be 
followed:

1.  The subject inhales deeply and holds the breath until he/she has positioned the 

mouthpiece of the AM into his/her mouth.

3.  After full exhalation, the AM should be removed from the mouth immediately. 

The subject should not breathe in through the mouthpiece.

2.  Now the subject must exhale as hard as possible for at least 2 seconds to  

obtain a satisfactory measurement.

The subject should:
•  not cough.
•  not block the mouthpiece with his/her tongue.
•  not block the outlet of the flow sensor with his/her hand.
•  be instructed to pause for about a second and then blow out hard and fast
  as he/she can.