Anaesthesia General 81a80b95

Concerning pulse oximetry true is

Oxyhemoglobin and deoxyhemoglobin light absorption is equal at the isobestic point of 660nm

Measurements are accurate in the presence of high levels of bilirubin

Measurements are accurate in presence of carboxyhaemoglobin

Measurements are accurate in presence of pigmented skin.

High-Yield Explanation

Light absorption of both oxy and deoxy haemoglobin is equal at isobestic point of 805 nm. Bilirubin, carboxyhemoglobin and methaemoglobin can affect the reading of pulse oximeter. Pigmented skin doesn’t influence the reading.

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Concerning pulse oximetry true is

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