<prompt> All of the following factors decrease the minimum alveolar concentration MAC of an inhalational anaesthetic agent exceptHypothermiaHyponatremiaHypocalcemiaAnemia  <response>: MINIMUM ALVEOLAR CONCENTRATION: The MAC of an inhaled anesthetic is the alveolar concentration that prevents movement in 50 of patients in response to a standardized stimulus eg, surgical incision. MAC is a useful measure because it mirrors brain paial pressure, allows comparisons of potency between agents, and provides a standard for experimental evaluations. Ref: Miller;s anesthesia 8th edition Ref: Morgan Mikhail;s clinical anesthesiology 6e 