Laerdal CPRmeter - Manual (Page 12)

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4 Compression Feedback
Compression
Release Target
Compression Rate Target
Compression
Depth Indicator
Compression
Rate Indicator
Compression
Depth Target
The display of the CPRmeter provides real-time feedback to the responder as
described below.
Good Compressions
Each compression performed is represented on
the CPRmeter display by a moving white
compression depth indicator bar. When the
CPRmeter detects that a compression meets
the targets for depth or release, the target briefly
illuminates.
If the CPRmeter detects that the rate of
compressions is within the target area, the
“speedometer” needle on the compression rate
indicator points to the green target area and the
green target briefly illuminates.
Compression Depth
If the CPRmeter detects a compression that fails
to meet the proper minimum compression depth
target (50 mm / 2 inches – for a patient on a hard
surface), the compression depth target does not
illuminate.
If 4 consecutive compressions fail to meet the
compression depth target, the display shows a
yellow arrow pointing to the compression depth
target.
If the CPR meter detects a compression that
exceeds 70 mm (2.75"), the CPRmeter shows the depth indicator below
the target area. If a specific CPR event requires CPR to be performed
on a patient lying on a mattress, slide a backboard under the patient and
compensate for the mattress softness by ensuring that for each chest
compression the area below the compression depth target lights up.
WARNING: When performing CPR on a patient lying on a mattress, a
backboard must be used to limit the amount of compressed depth which is
absorbed by the mattress. Depending on characteristics of the mattress,
backboard and patient, the depth compensation does not guarantee that
the patient chest is compressed by 50 mm / 2 inches.