<prompt> Oxygen - Hemoglobin dissociation curve is shifted to left by -AcidosisAlkalosisHyperthermiaAnaemia  <response>: Ans. is b i.e., Alkalosis Oxygen dissociation curve Shifted to right Shifted to left o Decreased oxygen affinity to hemoglobin o Increased P50 o Increased oxygen delivery to tissues o Causes : Decreased pH Acidosis Increased temperature Increased PCO2 Increased 2, 3 DPG BPG i Growth hormone, Androgen, thyroid hormone ii Exercise iii Tissue hypoxia iv High altitude v Anemia vi Alkalosis vii Cyanotic CHD viii Pregnancy ix Chemicals: Inosine, Pyruvate, PEP, phosphate Sickle hemoglobin HbS o Increased oxygen affinity to hemoglobin o Decreased P50 o Decrease oxygen delivery to tissues o Causes : Increased pH alkalosis Decreased temperature Decreased PCO2 Decreased 2,3 DPG BPG:-Stored blood Fetal hemoglobin HbF 