title: [Retrospective study for the risk factors of the early complication after carotid endarterectomy].
abstract: OBJECTIVE
  To review the influencing factors of the early complication after carotid endarterectomy (CEA).
  
  
  METHODS
  Retrospective analysis of clinical data of 509 cases received CEA in Xuan Wu Hospital of Capital Medical University, Liaocheng People's Hospital and Dalian Central Hospital from January 2001 to December 2011. There are 422 male patients and 72 female patients among the 494 patients, 15 patients underwent CEA by stages. The patients were between 35-84 years old,and the mean age was (64 ± 9) years. The complications within 30 days after CEA were analyzed, and find the risk factors for the major adverse events. Chi-square analysis was performed to analyze the correlation between the each variable of the basic characteristics of population, clinical features and intraoperative data and early adverse events after CEA. Logistic regression analysis was used to assess the relationship between a variety of factors and the postoperative complications within 30 days.
  
  
  RESULTS
  Technical complete rate of 98.6%, 7 cases of near-total occlusion patients could not been recanalized. Major complications in 30 days after CEA occurred in 20 cases (3.9%), including 6 cases of deaths (1.2%), 9 cases of cerebral infarction (1.8%) and 5 cases of cerebral hemorrhage (1.0%). Secondary complications occurred in 120 cases (23.6%). Univariate analysis showed modified Rankin scale (mRS) ≥ 3 on the incidence of early postoperative complication had significantly difference (χ² =20.517, P < 0.01), multivariate logistic regression analysis revealed that smoking (OR=2.667, 95% CI: 1.048-6.791, P=0.040) and mRS ≥ 3 (OR=8.690, 95% CI: 3.279-23.031, P=0.000) were the significant predictors of 30 days of the end event.
  
  
  CONCLUSIONS
  The complications after CEA are uncommon, the security is proved. Smoking and mRS ≥ 3 can increase the risk of CEA.
authors.affiliation: Department of Neurology, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, China.
authors.forename: Liyong
authors.initials: L
authors.lastname: Zhang
authors.forename: Guoyang
authors.initials: G
authors.lastname: Yin
authors.forename: Jiyue
authors.initials: J
authors.lastname: Wang
authors.forename: Liqun
authors.initials: L
authors.lastname: Jiao
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Wan
authors.forename: Junwei
authors.initials: J
authors.lastname: Shi
authors.affiliation: Email: lingfeng_vip@163.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Ling
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002543:Cerebral Hemorrhage / Q000150:complications; D002544:Cerebral Infarction / Q000150:complications; D016894:Endarterectomy, Carotid / Q000009:adverse effects*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D012189:Retrospective Studies; D012307:Risk Factors; D012907:Smoking; D013997:Time Factors; D016896:Treatment Outcome