This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complications Of Anaesthesia, Subject name: Anaesthesia
[{'content': 'Which the following may result in sudden increase in ETCO2? \nSelect and explain. \nA. Malignant Hyperthermia, B. Hyperthyroidism, C. Shivering, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. D. All of the above. (Ref. Paul's anaesthesia 5th/pg. Table 24-1)Factors That May Change End-Tidal Co2 (ETC02) During AnesthesiaIncreases in ETCO2Decreases in ETCO21. Hyperthermia1. Hypothermia2. Sepsis2. Hypothyroidism3. Malignant Hyperthermia3. Hyperventilation4. Shivering4. Hypoperfusion5. Hyperthyroidism5. Pulmonary embolism6. Hypoventilation 7. Rebreathing", 'role': 'assistant'}]