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A pulse oximeter shows the percentage of venous hemoglobin in the oxyhemoglobin (HbO2) and hemoglobin (Hb).

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A pulse oximeter shows the percentage of venous hemoglobin in the oxyhemoglobin (HbO2) and hemoglobin (Hb).

(a) True

(b) False

The question was posed to me in exam.

Query is from Pulse Oximeter topic in chapter Oximeters of Biomedical Instrumentation

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The correct choice is (b) False

Explanation: False, pulse oximetry is a non-invasive method allowing the monitoring of the saturation of a patient’s hemoglobin. A pulse oximeter shows the percentage of arterial hemoglobin in the oxyhemoglobin (HbO2) and hemoglobin (Hb). These observations:

A = -logT = log I0/I =ɛDC.

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