<prompt> A 36 year old patient presents to emergency with shock .His ECG shows ST elevation in lead 2 and lead 3 and avF. What is the most likely cause of shockPapillary muscle ruptureCardiac ruptureRight ventricular infarctionSeptal perforation  <response>: ECG features are suggestive of inferior wall MI . Right ventricular infarction presents as hypotension and shock. 