How Is the Percentage of Functional Hemoglobin That Is Saturated

question 6

Multiple Choice

How is the percentage of functional hemoglobin that is saturated with oxygen determined via pulse oximetry?

• A) The percentage of red light that lands on the photodiode represents the SpO₂ (oxygen saturation as determined by pulse oximetry).
• B) The percentage of infrared light that reaches the photodetector reflects the SpO₂.
• C) The ratio of the red and infrared light that reaches the photodiode signifies the SpO₂.
• D) The sum of the amount of red and infrared absorbed by the tissue determines the SpO₂.

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Definitions:

Neutral pH

A pH value of 7, indicating a balance between acidity and alkalinity in a solution, considered neither acidic nor basic.

Covalent Bonds

Chemical bonds formed by the sharing of one or more pairs of electrons between atoms to achieve a more stable electron configuration.

Organic Molecule

Molecule that always contains carbon and hydrogen, and often contains oxygen as well; organic molecules are associated

Carbon Atom

A chemical element with symbol C and atomic number 6, fundamental to all known life, able to form stable bonds with many elements including itself.