<prompt> A patient had an inferior wall myocardial infarction and was in shock. The reason for the patient being in shock is:-Mitral regurgitationInfarction causing septal defectRight ventricular infarctionDecreased ejection fraction from left ventricle  <response>: Answer is C Right Ventricular infarction Right ventricular infarction should be considered whenever a patient with inferior infarction exhibits signs of low cardiac output and raised venous pressure -- CMDT Mitral regurgitation, decreased ejection fraction and septal defect are features of anterior wall MI. 