Strenuous activity was identified as a precipitating factor for aortic dissection in 24 of the 90 patients ( 27 % ) contacted . severe emotional stress was identified as an inciting event in 36 cases ( 40 % ) 电话随访的90名患者中的24名( 27 % )认定重体力作业为主动脉壁夹层形成的促发因素。 36例( 40 % )患者将严重的情绪应激认定为激发事件。