Product Manual

Description of Controls, Indicators, and Symbols
12
Factors which may result in interference include but are not limited
to:
• incorrect sensor application
– sensor placement on an extremity with a blood pressure
cuff, arterial catheter, or intravascular line
– sensor applied too tightly
– incorrect sensor for placement site
• intravascular dyes, such as indocyanine green or methylene
blue
• externally applied coloring agents, such as nail polish, dye, or
pigmented cream
• failure to cover the sensor with opaque material in high
ambient light conditions, for example, conditions created
from one or more of the following sources:
– surgical lights, especially xenon light sources
– bilirubin lamps
– fluorescent lights
– infrared heating lamps
– direct sunlight
• physical movement, either patient or imposed activity
• venous pulsation
• dysfunctional hemoglobin
• low perfusion
• intermittent pulsatility or arrhythmia
• electromagnetic interference (EMI)
• ventilator-induced pressure changes