A Pulse Oximeter Differentiates Oxyhemoglobin from Deoxygenated Hemoglobin by Which

question 24

Multiple Choice

A pulse oximeter differentiates oxyhemoglobin from deoxygenated hemoglobin by which of the following methods?

• A) Relating cyclical changes in light transmission through the sampling site.
• B) Shining and comparing two wavelengths of light through the sampling site.
• C) Direct measurement by a heated polarographic electrode applied to the skin.
• D) Using a color sensing device that absorbs one wavelength of light through the skin.

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Definitions:

Pencil-and-Paper Tests

Traditional forms of assessments or examinations where responses are written or selected on paper, often used for educational or psychological testing.

Polygraphs

Lie detector tests that measure physiological responses to questions in order to infer truthfulness.

Reliability and Validity

Terms used in research and testing to describe, respectively, the consistency of results over time and the accuracy of measuring what it is supposed to measure.

Unstructured Interviews

A type of interview in which questions are not prearranged, allowing for a free-flowing, conversational approach.