Which of the following statements regarding hemoglobin (Hb) saturation are true? a. On top of Everest Hb is less than 20% saturated b.   A leftward shift of the Hb-O2 dissociation curve causes more O2 to be off-loaded from Hb at any given PO2   c. Athletes competing at sea level should breathe 100% O2 to increase Hb saturation d. More than one of the above are correct

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Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.