title: [Analysis on an early diagnosis grading model for acute aortic dissection].
abstract: OBJECTIVE
  To investigate the value of an early diagnosis grading model derived from the clinical manifestation, laboratory and imaging data for the diagnosis of aortic dissection (AD).
  
  
  METHODS
  An early diagnosis grading model was established based on the clinical manifestation, laboratory and imaging data from 182 AD patients who admitted to our department during the last 3 years, 184 patients with chest and back pain served as controls.
  
  
  RESULTS
  The sensitivity and specificity of diagnosing AD with the score of 5 is 96.7% and 81.0%, respectively.
  
  
  CONCLUSIONS
  The emergency diagnose of AD could be improved based on the established early grading model based on the stabbing and severe pain, rapid blood pressure increase, asymmetry of the blood pressure and/or the pulse, widened aortic knob, mediastinum or descending aorta on X-ray, and significantly increased D-dimmer level.
authors.affiliation: Emergency Department, Second Xiangya Hospital, Central South University, Changsha 410011, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Tang
authors.forename: Qi-ming
authors.initials: QM
authors.lastname: Liu
authors.forename: Sheng-hua
authors.initials: SH
authors.lastname: Zhou
authors.forename: Xiang-ping
authors.initials: XP
authors.lastname: Chai
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000784:Aortic Dissection / Q000175:diagnosis*; D001013:Aorta, Thoracic / Q000473:pathology; D001014:Aortic Aneurysm / Q000175:diagnosis*; D001416:Back Pain; D002637:Chest Pain; D003952:Diagnostic Imaging; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity