<prompt> All of the following factors predispoase to Aoic dissection, Except:Systemic hypeensionCoarctation of aoaIn Ist trimester pregnancyTakayasus aeritis  <response>: Answer is C In 1st trimester pregnancyAoic dissection is predisposed during Third trimester of pregnancy and not during the first trimester of pregnancy Risk factors Predisposing factors for Aoic DissectionSystemic Hypeension and cystic medial necrosisConnective Tissue Disorders- Marfans Syndrome- Ehlers Danlos SyndromeInflammatory Aoititis- Takayasu aeritis- Giant cell aeritisCongenital Aoic Valve abnormalities- Bicuspid Aoic ValveCoarctation of AoaAoic traumaThird trimester of pregnancy 