Unit 7.2.
Respirator fit testing
TB Infection Control Training for
Managers
at National and Subnational Level
Objectives of the Unit
After this unit, the participant will:
• Be able to correctly put on (don) a
disposable N95, FFP2 or FFP3
respirator
• Be able to perform a qualitative fit
test on a subject
• Undergo a qualitative fit test to
select an appropriate respirator for
him or herself (if desired)
2
Outline
•
•
•
Practice donning a respirator
How to perform a qualitative fit test
on a subject
Practice qualitative fit testing
3
Personal protective equipment
Respirator vs Mask
4
7
Find centre of nose piece
and bend gently
6
Open the respirator
7
Place straps on back of hand
8
Place respirator on face
9
Pull top strap over head
10
Place top strap on crown of head
11
Pull lower strap over head
12
Place bottom strap
at base of head
13
Mould to the shape of
your nose
Right way
Wrong way
14
User seal check
Cover respirator with both
hands
1. Exhale sharply
• Should feel positive
pressure inside respirator
• If leakage, adjust, retest
2. Inhale deeply
• Negative pressure should
make respirator cling to
face
• If leakage, adjust, retest
15
Qualitative fit test procedure
Subjects should not eat, drink (except
water) or chew gum for 15 minutes
before the fit test
Steps:
•
•
•
Sensitivity test
Challenge exercises
Document results
Materials needed: test kit, range of
respirator models and sizes, watch,
pen, paper
16
Sensitivity test
17
Sensitivity Test Solution
•
•
•
•
•
Inject 10 squeezes of Sensitivity Test Solution
If detected, and proceed to Challenge
Exercises
If not tasted, inject an additional 10 squeezes.
Repeat with 10 more if necessary.
Record the number of squeezes needed (10,
20 or 30).
Remove hood, and give the the subject a few
minutes to clear the taste from his/her mouth
18
Challenge exercises
Have subject:
• Don respirator
• Perform a user seal check
• Wear respirator at least 5 minutes
before testing begins
19
Fit Test Solution
• Inject 10, 20, or 30
squeezes of Fit Test
Solution (same
number required in
the Sensitivity Test)
• Continue injecting
half the number (5,
10 or 15) every 30
seconds during the
challenge exercises
20
Challenge exercises
1.
2.
3.
4.
5.
6.
7.
Normal breathing
Deep breathing
Move head side-to-side
Move head up and down
Talk non-stop
Jogging in place
Normal breathing
21
1. Normal breathing
22
2. Deep breathing
23
3. Move head side-to-side
24
4. Move head up-and-down
25
5. Talk non-stop
26
6. Jogging or walking in place
27
7. Normal breathing
28
If the subject detects the
taste….
• Terminate the test, because this
indicates an inadequate fit
• Wait 15 minutes and perform the test
again
• A second failure may indicate that a
different size or model respirator is
needed
29
If you did not taste the test
solution, smile… you passed!
Document
results
30