title: [Mid- to long-term effects of delayed percutaneous coronary intervention on left ventricular function and prognosis in patients with acute myocardial infarction].
abstract: OBJECTIVE
  To investigate the mid- to long-term effects of delayed percutaneous coronary intervention (PCI) on the left ventricular function and clinical outcome of patients with acute myocardial infarction (AMI).
  
  
  METHODS
  PCI (including percutaneous transluminal coronary angioplasty and stenting) was performed in 42 patients within 1 to 2 weeks following the onset of AMI (PCI group), with another 31 patients who were admitted within the same period to receive medication for AMI serving as the control group. The patients in both groups were observed for comparison of the occurrence of reinfarction and angina, mortality at 1 and 6 months, and findings by ultrasound cardiograms (UCG).
  
  
  RESULTS
  In PCI group, the left ventricular function were obviously improved as compared with the control group (P<0.01) 1 month after the onset of AMI, showing greater improvement at 6 months (P<0.01). No death or reinfarction occurred in the PCI group, with only 1 patients experiencing angina 5 months after PCI. In control group, death occurred in 2 cases, reinfarction in 1 case, recurrent angina in 4 cases (include 2 cases of early postinfarction angina).
  
  
  CONCLUSIONS
  Delayed PCI may significantly improve the prognosis of patients with AMI and prolong their survival without cardiovascular accidents and ameliorate their left ventricular functions, with high success rate of the operation.
authors.affiliation: Department of Cardiology, Second People's Hospital of Gulin, Gulin 541001, China.
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: Huang
authors.forename: Zhen-yao
authors.initials: ZY
authors.lastname: Pang
authors.forename: Qian-ying
authors.initials: QY
authors.lastname: Huang
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.forename: Yi-lan
authors.initials: YL
authors.lastname: Sun
authors.forename: Liu-ying
authors.initials: LY
authors.lastname: Ma
authors.forename: Xiu-hua
authors.initials: XH
authors.lastname: Huang
authors.forename: Ming-hua
authors.initials: MH
authors.lastname: Jin
mesh_terms: D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D011379:Prognosis; D015607:Stents; D013997:Time Factors; D016277:Ventricular Function, Left