<prompt> All of the following factors decrease the minimum alveolar concentration MAC of an inhalation anaesthetic agent exceptHypothermiaHyponatremiaHypocalcemiaAnemia  <response>: Hypercalcemia not hypocalcemia decreases MAC.Factors decreasing MAC :- Old age, acute alcohol intake, hypothermia, hyperthermia, hypercalcemia, hyponatermia,hypermagnesemia, Hypoxia, Hypercarbia, Anemia, Pregnancy, drugs.Factors increasing MAC :-Young age, chronic alcohol intake, hypematremia, Drugs. 