This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'ST segment elevation in ECG is not seen in? \nSelect and explain. \nA. Pericarditis, B. Hyperkalemia, C. Hypocalcemia, D. Hypothermia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hypocalcemia REF: Harrison\'s Principles of Internal Medicine 17th ed-chapter 221 "Hypercalcemia not hypocalcemia causes ST segment elevation on ECG" DIFFERENTIAL DIAGNOSIS OF ST SEGMENT ELEVATIONS Ischemia/myocardial infarction Non infarction, transmural ischemia (Prinzmetal\'s angina, and possibly tako-tsubo syndrome) Acute myocardial infarction Post myocardial infarction (ventricular aneurysm pattern) Acute pericarditis Normal variant ("early repolarization" pattern) Left ventricular hyperophy/left bundle branch blockage Myocardial injury Myocarditis Tumor invading left ventricle Trauma to ventricles Other (rarer) Brugada pattern (right bundle branch block-like pattern with ST elevations in right precordial leads) Class 1C antiarrhythmic drugs DC cardioversion Hypercalcemia Hyperkalemia Hypothermia (J wave/Osborn waves)', 'role': 'assistant'}]