Nonin LifeSense LS1-9R Operator's Manual page 10

Cautions (Continued)
This device is designed to determine the percentage of arterial oxygen saturation of functional hemoglobin. Factors
that may degrade pulse oximeter performance or affect the accuracy of the measurement include the following:
- excessive ambient light
- excessive motion
- electrosurgical interference
- blood flow restrictors (arterial catheters, blood pressure
cuffs, infusion lines, etc.)
- moisture in the sensor
- improperly applied sensor
- incorrect sensor type
Each time the system is turned on, all audible alarms are disabled for 2 minutes unless the operator presses the
Audible Alarm Pause/Resume button.
Capnography alarms are not active until the first breath is detected.
Oximetry alarms are not active until the first pulse is detected.
A functional tester cannot be used to assess the accuracy of a pulse oximeter monitor or sensor.
Be careful not to drop LifeSense on the floor or strike it against hard surfaces. If such an incident happens, do not use
LifeSense until a functional test has been carried out.
All parts and accessories connected to the serial port of this device must be certified according to at least
IEC Standard EN 60950 or UL 1950 for data-processing equipment.
The monitor is equipped with automatic barometric pressure compensation. End tidal pCO
calculated based on an atmospheric pressure of 760 mmHg and pH
5% = 36 mmHg).
Water or other liquid in the sampling tube may cause erroneous CO
Ensure that all connections are tight, leak-free, and properly attached.
If the Nafion tubing becomes contaminated or damaged during use, discard it and replace it with a new one.
Radios and cell phones or similar devices may affect the LifeSense and should be kept at least 2.5 meters (8 feet)
away from the device. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast towers and TV broadcast towers may
affect accuracy.
Failure of a network data coupling (serial cable/connectors) will result in loss of data transfer.
Before first use and before storing this monitor, fully charge battery.
If not in continuous use, fully charge battery at six-month intervals
Before first use and before storing this monitor, fully charge battery.
If not in continuous use, fully charge battery at six-month intervals.
4
- inadequate signal
- venous pulsations
- anemia or low hemoglobin concentrations
- cardiogreen and other intravascular dyes
- carboxyhemoglobin
- methemoglobin
- dysfunctional hemoglobin
- artificial nails or fingernail polish
O of 47 mmHg (example: 760 – 47 = 713, 713 x
2
readings.
2
values displayed are
2