The reference range for arterial pH measured at 37°C is which of the following?

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Multiple Choice

The reference range for arterial pH measured at 37°C is which of the following?

Explanation:
Arterial pH is kept within a very narrow range by the body's buffering systems and ventilation. At 37°C, the accepted reference range for arterial blood is 7.35 to 7.45. This window reflects the balance between acidic carbon dioxide and basic bicarbonate; values below 7.35 indicate acidemia, while values above 7.45 indicate alkalemia. Other ranges fall outside normal arterial physiology, describing acidemia or alkalemia rather than a true normal arterial pH. Temperature standardization matters because pH shifts with temperature, so labs use 37°C to keep measurements comparable.

Arterial pH is kept within a very narrow range by the body's buffering systems and ventilation. At 37°C, the accepted reference range for arterial blood is 7.35 to 7.45. This window reflects the balance between acidic carbon dioxide and basic bicarbonate; values below 7.35 indicate acidemia, while values above 7.45 indicate alkalemia. Other ranges fall outside normal arterial physiology, describing acidemia or alkalemia rather than a true normal arterial pH. Temperature standardization matters because pH shifts with temperature, so labs use 37°C to keep measurements comparable.

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