1110
Figure 8a: Pass, line
above mattress.
6. Determine whether the cone’s center sinks completely
below the surface of the mattress. - Repeat test on all Rails
7. Interpret test result and record the results on the data sheet.
Interpret Test 3 Results:
If the line across the flat end of the cone is above or even with
the surface of the mattress, the space passes the test (figure 8a
and 8b). If the line across the flat end of the cone is below the
top surface of the mattress, the space fails the test (figure 8c).
If a test is a close call, and you have trouble deciding whether
the bed system passes or fails, make your best decision and
mark the result with an asterisk (*) next to your answer to
show that it was a close call.
Repeat Test 3:
On the same rail: If the rail has any intermediate positions,
do the test at every intermediate position.
On the other rails: Do the test for all other rails on the bed,
including the intermediate positions.
Figure 8b: Pass, line
even with mattress.
Figure 8c: Fail, line
below mattress.
Zone 4: Potential neck entrapment between the top
of the compressed mattress and the bottom of the
rail at the end of the rail.
The tools needed for this test include the assembled cone
and cylinder with safety strap.
Prepare for Test 4:
1. Lock the wheels.
2. Put the bed in the flat, horizontal position.
3. Fully raise all bed rails.
4. Put the bed at a comfortable working height position.
5. Do the test on the end of the
rail (figure 9). Test the rails in
any order you choose. If the
bed has split rails, you may
need to lower the rail next to
the one being measured to
make room for the tools.
Do Test 4:
1. Firmly push the mattress
away from the rail being
tested until it stops.
2. Attach the safety strap of the
cone tool to the rail being
tested.
3. Just beyond the end of the
rail, rest the cone portion of
the cone and cylinder tool on
the mattress.
Note: If the cylinder tool
cannot fit into an area
between the head or
footboard and the end of
a rail, the space passes.
Figure 9: Test 4, between the
rail and mattress, under the
rail at the end of the rail.
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