This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiopulmonary Cerebral Resuscitation, Subject name: Anaesthesia
[{'content': 'All of the following can cause Pulseless electrical activity except \nSelect and explain. \nA. Pulseless VT, B. Tension pneumothorax, C. Massive pulmonary embolism, D. Cardiac tamponade', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pulseless electrical activityis a very disconceing medical scenario with a very high moality unless its aetiology can be quickly asceained and corrected. Treatment involve staing CPR immediately and administering 1 mg epinephrine IV mnemonic to remember the differentcauses of pulseless electrical activityis: MAD (triple H) CAT Mnemonic M:massivepulmonary embolism A:acidosis D:drug overdose H:hypoxia/hypothermia H:hypovolaemia H:hypokalaemia/hyperkalaemia C:cardiac tamponade A:acute myocardial infarction T:tension pneumothorax', 'role': 'assistant'}]