GE CARESCAPE, Руководство пользователя

Страница: 215 / 548

Pulse oximetry
SpO
2
wavelengths and optical output power
GE Ohmeda, Masimo SET and Nellcor OxiMax pulse oximetry are calibrated to display
functional saturation.
This information may be useful to clinicians such as those performing photodynamic
therapy:
●
Nellcor OxiMax pulse oximetry sensors contain LEDs that emit red light at a
wavelength of approximately 660 nm and infrared light at a wavelength of
approximately 900 nm. The total optical output power of the sensor LEDs is less
than 15 mW.
●
Masimo SET pulse oximetry sensors contain LEDs that emit red light at a wavelength
of approximately 660 nm and infrared light at a wavelength of approximately 905
nm for LNOP and LNCS, and approximately 663 nm and 880 nm for LNOP and LNCS
tip clips. The total optical output power of the LEDs is less than or equal to 15 mW.
●
GE Ohmeda SpO
2
for use with TruSignal sensors only: GE pulse oximetry sensors
contain LEDs that emit red light at a wavelength of approximately 663 nm and
infrared light at a wavelength of approximately 890 or 940 nm. The maximum
optical output power for each LED is less than 15mW.
SpO
2
measurement and interference
These types of interference can influence the function of SpO
2
:
●
Incorrect sensor application, e.g., sensor placement on an extremity with a blood
pressure cuff, arterial catheter, or intravascular line, sensor applied too tightly.
●
Intravascular dyes, such as idocyanine or methylene blue.
●
Externally applied coloring agents with opaque materials in high ambient light
conditions, e.g., 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
●
Excessive patient activity
●
Venous pulsation
●
Dysfunctional hemoglobin
●
Poor (low) peripheral perfusion
●
Arterial occlusion proximal to the sensor
●
Loss of pulse (cardiac arrest)
●
Electromagnetic interference (EMI)
●
Ventilator-induced pressure change
2062971-001 CARESCAPE Modular Monitors 215