title: Risk factors associated with haemodynamic depression during and after carotid artery stenting.
abstract: We aimed to investigate the risk factors for haemodynamic depression (HD) during and after carotid artery stenting (CAS). A total of 251 patients with CAS, enrolled between June 2004 and December 2008, were divided into two groups according to periprocedure observations: (i) a group with HD (systolic blood pressure<90 mm Hg and heart beat rate<50/ beats per minute); and (ii) a group without (non-HD). The risk factors for HD were analysed by univariate analysis and a logistic regression model. The univariate analysis of variance showed that the following factors were significantly associated with HD in patients with CAS: severe calcified plaque, stenosis greater than 70%, distance from the carotid bifurcation to the maximum stenotic lesion of <10mm, balloon dilation lasting more than 5 s with a pressure of more than 8 atmospheres (atm), multiple balloon dilations, balloon length, balloon diameter, and bilateral stenting. The results of the logistic regression model analysis showed that the following were independent risk factors for HD during and after CAS: the degree of stenosis, severe calcified plaque, bilateral stenting and a balloon dilation pressure of >8 atm. We concluded that patients with stenosis>70%, severe calcified plaque, bilateral stenting and a balloon dilation pressure>8 atm may be more likely to develop HD during and after CAS.
authors.affiliation: Department of Neurology, Jinling Hospital, Second Military Medical University, 305 East Zhongshan Road, Nanjing 210002, China.
authors.forename: Xuegan
authors.initials: X
authors.lastname: Lian
authors.forename: Min
authors.initials: M
authors.lastname: Lin
authors.forename: Shuanggen
authors.initials: S
authors.lastname: Zhu
authors.forename: Wenhua
authors.initials: W
authors.lastname: Liu
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Wen
authors.initials: W
authors.lastname: Sun
authors.forename: Qin
authors.initials: Q
authors.lastname: Yin
authors.forename: Gelin
authors.initials: G
authors.lastname: Xu
authors.forename: Renliang
authors.initials: R
authors.lastname: Zhang
authors.forename: Xinfeng
authors.initials: X
authors.lastname: Liu
mesh_terms: D000368:Aged; D002343:Carotid Artery, Internal / Q000503:physiopathology / Q000601:surgery; D016893:Carotid Stenosis / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007022:Hypotension / Q000209:etiology / Q000503:physiopathology*; D007431:Intraoperative Complications / Q000209:etiology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology / Q000503:physiopathology*; D012307:Risk Factors; D015607:Stents / Q000009:adverse effects