Dysfunctional Hemoglobins; Anemia; Saturation - Covidien Nellcor OxiMax N-600x Operator's Manual

Performance Considerations

Dysfunctional Hemoglobins

Anemia

Saturation

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• dysfunctional hemoglobins
• poor peripheral perfusion
• excessive patient movement
• venous pulsations
• intravascular dyes, such as indocyanine green or
methylene blue
• externally applied coloring agents (nail polish, dye,
pigmented cream)
• defibrillation
Dysfunctional hemoglobins such as carboxyhemoglobin,
methemoglobin, and sulphemoglobin are unable to carry oxygen.
SpO readings may appear normal; however, a patient may be
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hypoxic because less hemoglobin is available to carry oxygen.
Further assessment beyond pulse oximetry is recommended.
Anemia causes decreased arterial oxygen content. Although SpO
readings may appear normal, an anemic patient may be hypoxic.
Correcting anemia can improve arterial oxygen content. The
monitor may fail to provide an SpO
below 5 gm/dl.
The N-600x displays saturation levels between 1 and 100%.
if hemoglobin levels fall
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N-600x Operator's Manual
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