![background image](http://html1.mh-extra.com/html/covidien/nellcor-series/nellcor-series_operators-manual_2673906076.webp)
Performance Considerations
6-2
Operator’s Manual
6.3
Performance Considerations
6.3.1
Overview
This section contains information for optimizing the performance of the monitoring
system.
Verify the performance of the monitoring system by following the procedures out-
lined in the
SRC-MAX Pulse Oximetry Functional Tester Technical Manual
. Have a qual-
ified service technician perform these procedures prior to initial installation in a
clinical setting and every 24 months as part of preventive maintenance. Reference
6.3.2
Patient Conditions
Application issues and certain patient conditions can affect the measurements of
the monitoring system and cause the loss of the pulse signal.
•
Anemia — Anemia causes decreased arterial oxygen content. Although SpO
2
readings
may appear normal, an anemic patient may be hypoxic. Correcting anemia can improve
arterial oxygen content. The monitoring system may fail to provide an SpO
2
reading if
hemoglobin levels fall below 5 gm/dl.
•
Dysfunctional hemoglobins — Dysfunctional hemoglobins such as carboxyhemoglo-
bin, methemoglobin, and sulphemoglobin are unable to carry oxygen. SpO
2
readings
may appear normal; however, a patient may be hypoxic because less hemoglobin is
available to carry oxygen. Further assessment beyond pulse oximetry is recommended.
•
Additional possible patient conditions may also influence measurements.
1.
Poor peripheral perfusion
2.
Excessive patient movement
3.
Venous pulsations
4.
Dark skin pigment
5.
Intravascular dyes, such as indocyanine green or methylene blue
6.
Externally applied coloring agents (nail polish, dye, pigmented cream)
7.
Defibrillation
Summary of Contents for Nellcor Series
Page 1: ...Operator s Manual Nellcor Bedside SpO2 Patient Monitoring System TM...
Page 8: ...Page Left Intentionally Blank vi...
Page 12: ...Page Left Intentionally Blank x...
Page 20: ...Introduction Page Left Intentionally Blank 1 8 Operator s Manual...
Page 36: ...Installation Page Left Intentionally Blank 3 8 Operator s Manual...
Page 118: ...Product Specifications Page Left Intentionally Blank 11 18 Operator s Manual...
Page 156: ...Clinical Studies Page Left Intentionally Blank A 38 Operator s Manual...
Page 159: ......