<prompt> Answer this question truthfullyCould you please provide me with the initial sentence you want me to rephrase?  <response>: <reason> Ischemic stroke Retinal ischemic injury - transient loss of visionPrognosis of carotid artery dissection is favorable with 75 of patients having a good recovery. Traumatic dissection is associated with a higher mortality rate on discharge compared to spontaneous dissection. Two important prognostic factors include:Initial ischemic injury Collateral circulation 