Cough Reflex Test (CRT) Practice

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What is the threshold value for normal pulse oximetry readings?

92%

The threshold value for normal pulse oximetry readings is generally accepted to be 95%. This percentage indicates that a healthy person's blood is adequately saturated with oxygen, allowing proper functioning of bodily tissues and organs. Readings below this threshold may suggest impaired oxygen levels, which can lead to various health complications.

Considering the options provided, it is clear that 95% reflects the optimal benchmark used clinically to determine if a patient's oxygen saturation is within a normal range. Values lower than this, such as 92%, 90%, or 85%, are typically associated with varying degrees of hypoxemia, necessitating further clinical evaluation and potential intervention. Thus, any reading at or above 95% is generally seen as a sign of normal respiratory function and adequate oxygenation.

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