User's Manual

F Series Fetal & Maternal Monitor User Manual Maternal Monitoring
- 90 -
WARNING
3 Do not perform SpO
2
measuring and NIBP measuring on the same arm at one time,
because obstruction of blood flow during NIBP measuring may adversely affect the
reading of SpO
2
numeric.
4 Prolonged and continuous monitoring may increase jeopardy of unexpected change
of dermal condition such as abnormal sensitivity, rubescence, vesicle, repressive
putrescence, and so on. It is especially important to check the sensor placement of
neonate and patient of poor perfusion or immature dermogram by light collimation and
proper attaching strictly according to changes of the skin.
5 The maximum application time of the SpO
2
sensor at a single site is 4 hours. Check
the sensor placement every 2 to 3 hours and move it when the skin deteriorates.
More frequent examinations may be required for different patients.
6 Setting the SpO
2
higher alarm limit to 100% is equivalent to switching off the alarm on
higher limit. High oxygen levels may predispose a premature infant to retrolental
fibroplasia. Therefore, the higher alarm limit for oxygen saturation must be carefully
selected in accordance with commonly accepted clinical practices.
CAUTION
Compatibility between the monitor and sensor should be verified before use to avoid
injuring the patient or operator.
NOTE:
1 The monitor is calibrated to display functional oxygen saturation.
2 A functional tester cannot be used to assess the accuracy of the SpO
2
sensor or the
monitor.
3 The monitor does not have specific SpO
2
calibration baselines.
4 SpO2 waveform is not proportional to the pulse volume.
5 Injected dyes such as methylene blue or intravascular dyshemoglobins such as
methemoglobin and carboxyhemoglobin may lead to inaccurate measurements.
Measurement Limits -
In operation, the accuracy of oximetry readings can be affected by:
1) Magnetic resonance imaging (MRI) scanning. Induced current could potentially cause burns.
2) Excessive patient movement.
3) Low perfusion.
4) High-frequency electrical noise, including noise created by the host system, or noise from
external sources, such as electrosurgical apparatus, which is admitted by the host system.