Rad-57 Signal Extraction Pulse CO-Oximeter Operator’s Manual 4-7
4
operation
SENSITIVITY
Three sensitivity levels enables a clinician to tailor the response of the Rad-57 to the needs
of the particular patient situation. They are as follows:
■ Normal Sensitivity – This is the recommended mode for typical monitoring
purposes. It is advisable for care areas where patients are observed frequently,
such as ICU’s.
■ Adaptive Probe Off Detection (APOD™) – This is the recommended monitoring
mode where there is a high probability of the sensor becoming detached. It is
also the suggested mode for care areas where patients are not visually monitored
continuously. This mode delivers enhanced protection against erroneous pulse
rate and arterial oxygen saturation readings when a sensor becomes inadvertently
detached from a patient due to excessive movement.
■ Maximum Sensitivity (MAX) - This mode is recommended for patients with low
perfusion or when the low perfusion message is displayed on the screen in APOD
or normal sensitivity mode. This mode is not recommended for care areas where
patients are not monitored visually, such as general wards. It is designed to
interpret and display data at the measuring site when the signal may be weak due
to decreased perfusion. When a sensor becomes detached from a patient, it will
have compromised protection against erroneous pulse rate and arterial saturation
readings
CAUTION: WHEN USING THE MAXIMUM SENSITIVITY SETTING, THE PERFORMANCE
OF THE SENSOR OFF DETECTION MAY BE COMPROMISED. IF THE IS IN
THIS SETTING AND THE SENSOR BECOMES DISLODGED FROM DEVICE
THE PATIENT, THE POTENTIAL FOR FALSE READINGS MAY OCCUR
DUE TO ENVIRONMENTAL ‘NOISE’ SUCH AS LIGHT, VIBRATION AND
EXCESSIVE AIR MOVEMENT.
BATTERY LEVEL INDICATOR
Four LED indicators provide information on the remaining battery capacity. The operator
should monitor these indicators periodically to determine remaining battery life and if the
batteries should be replaced. Battery capacity is indicated in the following chart.
INDICATION BATTERY CAPACITY
4 LEDs
100% to 75%
3 LEDs
75% to 50%
2 LEDs
50% to 25%
1 LED
25% to 10%
1 FLASHING LED WITH AUDIBLE ALARM
10% to 0%
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