Which of the following causes a left shift in the oxygen dissociation curve (normal blood pH: 7.35-7.45)? A) A blood pH of 7.54 B) A body temperature of 103°F C) An increased 2, 3-BPG concentration D) An increased pCO₂

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Quizplus · Accepted Answer

A left shift in the oxygen dissociation curve indicates an increased affinity of hemoglobin for oxygen, making it harder for oxygen to be released to tissues. A blood pH of 7.54, which is higher than the normal range, causes such a shift due to the Bohr effect, where an increase in pH (alkalosis) leads to increased oxygen binding to hemoglobin.

Which of the Following Causes a Left Shift in the Oxygen