109
10
Monitoring SpO
2
Pulse Oximetry (SpO
2
) is one of the tools available to assist in assessing a patient’s cardiac and
respiratory systems. This chapter explains how Pulse Oximetry works and how to use the Efficia
DFM100 to monitor SpO
2
.
Overview
Pulse oximetry is a non-invasive method of continuously measuring functional oxygen saturation
(SpO
2
) in arterial blood. SpO
2
readings indicate the percentage of hemoglobin molecules in arterial
blood which are saturated with oxygen.
You can monitor SpO
2
in all Efficia DFM100 clinical modes and on both adult and infant/child
patients. Use the Patient Category button to switch categories.
When pressing the Patient Category button, all parameter alarm limits change to the new patient
category. These changes are retained when you switch modes.
• For patients that are ≥ 25kg or ≥ 8 years old, use Adult patient category
• For patients <25kg or < 8 years old, use Infant/Child patient category
The neonatal patient category is not supported.
WARNINGS: Do not leave an SpO
2
sensor on a patient undergoing an MRI.
For patients with an intra-aortic balloon pump, access peripheral pulses according to your
institution’s protocol.
Do not rely solely on SpO
2
readings; assess the patient at all times. Inaccurate measurements may be
caused by:
• Incorrect sensor application or use
• Significant levels of intravascular dyshemoglobins such as carboxyhemoglobin or
methemoglobin in patient
• Patients with other disorders of hemoglobin
• Patients with restricted blood flow to the extremities (such as those in severe shock or
hypothermia)
• Injected dyes such as methylene blue
• Exposure to excessive illumination such as surgical lamps (especially those with a xenon light
source), bilirubin lamps, fluorescent lights, infrared heating lamps or direct sunlight
To Next Page
Loading...