Acute aoic reguritation can occur as a complication of all of the following conditions, except

Acute aoic regurgitation often occur as a complication of Marfan's syndrome, Ankylosing spondylitis and Infective endocarditis. Most common valvular complication of acute MI is mitral regurgitation not aoic regurgitation. Severe mitral regurgitation is seen in association with inferior myocardial infarction and involvement of posteromedial papillary muscle.