Operator's Manual

6.3 Pulse oximetry
Tempus Pro User/Operator Manual - 41-2001EN-00 – Page 89
Note
Any condition that restricts blood flow, such as use of a blood pressure cuff (other than the
Tempus Pro cuff used in accordance with the instructions herein) may cause an inability to
determine accurate pulse and SpO
2
readings.
Note
SpO
2
measurements may be adversely affected in the presence of high ambient light levels
(e.g. strong sunlight). This may be more noticeable with disposable probes. If necessary,
shield the sensor area (e.g. with a towel) or a Masimo® light shield.
Note
Remove fingernail polish or false fingernails before applying SpO
2
sensors. Fingernail
polish or false fingernails may cause inaccurate SpO
2
readings.
Note
Performance and safety test data are available on request from RDT, see “RDT contact
details”.
Note
The graphical displays of pulse rate, SpO
2
and pulse strength are not proportional to the
pulse volume. The amplitude of the waveform is adjusted on an on-going basis to provide
the largest size waveform possible. Do not attempt to normalise the waveform to any scale.
Note
The SpO
2
2
sensor should be on the opposite arm to the blood pressure cuff. The arm of the
patient must be kept still and either be horizontal to the shoulder (if the patient is lying down)
or below the shoulder (if the patient is sitting upright). If the finger selected does not give
good results, this could be due to poor perfusion of blood. Ensure that the finger is inserted
all way into the clip, or try taking a reading on another finger.
Note
If the accuracy of any measurement does not seem reasonable, first check the patient’s vital
signs by alternate means and the check the MS board pulse oximeter for proper functioning.
Note
NO IMPLIED LICENSE - Possession or purchase of this device does not convey any
express or implied license to use the device with unauthorized sensors or cables that would,
alone or in combination with this device, fall within the scope of one or more of the patents
relating to this device.
Note
Inaccurate measurements may be caused by:
 Incorrect sensor application or use
 Significant levels of dysfunctional haemoglobins. (e.g., carboxyhaemoglobin or
methaemoglobin)
 Intravascular dyes such as indocyanine green or methylene blue.
 Exposure to excessive illumination, such as surgical lamps (especially ones with a
xenon light source), bilirubin lamps, fluorescent lights, infrared heating lamps, or direct
sunlight (exposure to excessive illumination can be corrected by covering the sensor
with a dark or opaque material)
 Excessive patient movement.
 Venous pulsations.
 Placement of a sensor on an extremity with a blood pressure cuff, arterial catheter, or
intravascular line.