Oxygen hemoglobin dissociation curve is managed to understand how the blood carries oxygen to the tissues and how to release it. It measures the affinity of hemoglobin for oxygen. Shift of the curve to the left means high affinity for oxygen while shift to the right means low affinity of hemoglobin to oxygen. Of the factors listed below which one causes shift of oxygen hemoglobin dissociation curve to the right? A- Decreased CO2 B- Decreased temperature C- Decreased pH D- Decreased 2-3 DPG http://medical-usmle.com/?p=788