title: [Changes of cerebral vascular hemodynamics from normal population to stroke].
abstract: OBJECTIVE
  To probe into changes of cerebral vascular hemodynamics indexes (CVHI) from normal population to different clinical stage before and after occurring of stroke.
  
  
  METHODS
  Participants were selected from 25,355 stroke cohort study population aged 35 years and over in Northeast of China and 55 acute stroke patients were selected from Fuzhou PLA General Hospital. CVHI indexes were checked during baseline investigation or within one week after acute stroke. Participant enlisted in the study were divided into following 5 groups, normal population, high risk population, individuals before stroke, acute stroke patients and convalescence stroke patients. Characteristics of CVHI indexes in different population were analyzed and compared.
  
  
  RESULTS
  V(min) of cerebral vascular in previous defined 5 group participants were 11.39 +/- 3.27, 9.66 +/- 3.18, 6.71 +/- 3.30, 4.13 +/- 1.27, 6.78 +/- 3.09, respectively. V(mean) and V(max) were with the same decreasing trends as V(min). However, RV in 5 group participants were 62.35 +/- 21.11, 82.32 +/- 31.16, 122.72 +/- 52.73, 137.46 +/- 49.56 and 115.89 +/- 55.51, respectively. Zcv, WV, DR and CP were also with the same increasing trends as RV. Abnormal rate of CVHI score (< 75 points) from normal population to convalescence stroke patients were 13.3%, 34.7%, 74.1%, 100% and 66.7%, respectively.
  
  
  CONCLUSIONS
  From normal population to clinical stage of stroke, cerebral vascular velocity showed decreasing trends while other indexes, such as RV, Zcv, WV, DR and CP were increasing.
authors.affiliation: Department of Neurology, Fuzhou General Hospital of The Chinese People's Liberalion Army, Fuzhou 350021, China.
authors.forename: Bo-sheng
authors.initials: BS
authors.lastname: Yang
authors.forename: Gui-qing
authors.initials: GQ
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Xue-hai
authors.initials: XH
authors.lastname: Yu
authors.forename: Ji-ping
authors.initials: JP
authors.lastname: Guo
authors.forename: Su-chun
authors.initials: SC
authors.lastname: Wang
authors.forename: Yong-ju
authors.initials: YJ
authors.lastname: Yang
mesh_terms: D001921:Brain / Q000098:blood supply*; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D020521:Stroke / Q000209:etiology / Q000503:physiopathology*