Henry Schein HS-Vet Instructions For Use Manual page 47

Inaccurate measurements can be caused by:

Incorrect application of the sensor.

Placement of the sensor on an extremity with a blood
pressure cuff, arterial catheter, or intravascular line.

Excessive patient activity.

Intravascular dyes, such as indocyanine green or
methylene blue.

Externally applied coloring, such as nail polish or
pigmented cream.

Failure to cover the sensor site with opaque materials
in high ambient light conditions.

Venous pulsation.

Dysfunctional hemoglobin.

Low perfusion.
Loss-of-pulse signal occurs for the following reasons:

The sensor is applied too tightly.

Defibrillation.

A blood pressure cuff is inflated on the same extremity
as the one with the sensor attached.

There is arterial occlusion proximal to the sensor.

Poor peripheral perfusion.

Loss of pulse/cardiac arrest.
To use the sensor:

Select an appropriate sensor.

Apply the sensor as directed, and observe all warnings
and cautions presented in the sensor user manual.

Clean and remove any substances, such as nail polish,
from the application site.

Periodically check to ensure that the sensor remains
properly positioned on the patient.
High ambient light sources that can interfere with the performance
of the sensor are:

Surgical lights (especially those with a xenon light
source).

Bilirubin lamps.
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