Which of the following statements about the oxyhemoglobin dissociation curve is true?

Question

Quizplus · Accepted Answer

The oxyhemoglobin dissociation curve shifts to the right with hypercarbia, which means an increase in carbon dioxide concentration. This shift facilitates the unloading of oxygen from hemoglobin and improves tissue oxygenation. Increasing PaO2 above 90 mm Hg does not greatly improve saturation on the oxyhemoglobin dissociation curve, as the curve plateaus at around 100 mm Hg. Acidemia, which is a decrease in pH, shifts the curve to the right, not to the left. An increase in PaO2 does not cause a linear increase in SaO2, as the curve is sigmoidal in shape.

Which of the Following Statements About the Oxyhemoglobin Dissociation Curve