This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inhalational Anesthetic Agents, Subject name: Anaesthesia
All of the following decreases mean alveolar concentration (MAC) except: 
Select and explain. 
A. Hypoxia, B. Hypercapnia, C. Hypothyroidism, D. Hypovolemia
C: Hypothyroidism
Answer: C: Hypothyroidism 
Explanation: MAC can be affected by several physiological and pharmacological variables: Endocrine disorders does not affect MAC. MAC | ed MAC | ed Hypoxia Hypercapnia Hypovolemia Hypothermia Hypehermia >42 degree Hypercalcemia Hyponatraemia Hypernatraemia