title: [Efficacy of the thrombectomy on no-reflow in patients with acute myocardial infarction].
abstract: OBJECTIVE
  To study the efficacy of the percutaneous thrombectomy on no-reflow in the patients with acute myocardial infarction (AMI) with angiographically proven thrombus.
  
  
  METHODS
  A total of 68 patients suffering from AMI with coronary thrombus shown by angiography were randomly divided into a group of percutaneous coronary intervention (PCI) therapy (n = 34) and a group of PCI plus percutaneous thrombectomy (n = 34). At 24 hours and 1 week after PCI, real-time imaging was performed by contrast pulse sequencing technology. Contrast score index (CSI), regional wall motion score index (WMSI), endocardial length of contrast defect (CDL) and wall motion abnormality (WML) were calculated.
  
  
  RESULTS
  In patients treated with a percutaneous thrombectomy, CSI, WMSI, CDL/left ventricular length (LV), and WML/LV were significantly lower than in PCI group at both time points of observation, and these indexes were markedly decreased at 1 week after PCI compared with 24 hours after PCI (P<0.05 or P<0.01).
  
  
  CONCLUSIONS
  The beneficial effect of the thrombectomy occurs at the microvascular level. Thrombectomy reduces the no-flow phenomenon and the extent of microvascular obstruction, thus it is a feasible therapy in patients with AMI.
authors.affiliation: Department of Cardiology, The First Clinical College, Harbin Medical University, Harbin 150001, Heilongjiang, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Pan
authors.forename: Lan-feng
authors.initials: LF
authors.lastname: Wang
authors.forename: Shu-sen
authors.initials: SS
authors.lastname: Yang
authors.forename: Zhu-qin
authors.initials: ZQ
authors.lastname: Li
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Zhou
authors.forename: Yue
authors.initials: Y
authors.lastname: Li
authors.forename: Wei-min
authors.initials: WM
authors.lastname: Li
mesh_terms: D015906:Angioplasty, Balloon, Coronary; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000601:surgery*; D017131:Thrombectomy / Q000379:methods*; D016896:Treatment Outcome