This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
ST segment elevation on EKG is not seen in 
Select and explain. 
A. Early repolarization variant, B. Constrictive pericarditis, C. Ventricular aneurysm, D. Prinzmetal angina
B: Constrictive pericarditis
Answer: B: Constrictive pericarditis 
Explanation: Causes of ST-segment elevation are as follows: 1. Ischemia/myocardial infarction a. Noninfarction, transmural ischemia (Prinzmetal's angina, and Takotsubo syndrome) b. Acute MI c. Postmyocardial infarction (ventricular aneurysm) 2. Acute pancarditis 3. Normal variant (early repolarization pattern) 4. Left ventricular hyperophy/left bundle branch block 5. Rare causes a. Brugada pattern b. Class-1c antiarrhythmic drugs c. DC cardioversion d. Hypercalcemia e. Hyperkalemia f. Hypothermia (J wave/Osborne waves) g. Myocardial injury i. Myocarditis J. Tumor invading left ventricle K. Trauma to ventricles Ref - Harrison&;s principles of internal medicine 20th ed pg 1680