title: Left ventricular remodeling assessment in patients with anterior acute myocardial infarction treated with successful primary percutaneous coronary intervention: an observational study.
abstract: OBJECTIVE
  We aimed to analyze the left ventricular (LV) remodeling in patients treated with coronary intervention (PCI) in the acute phase of anterior myocardial infarction (MI) and to analyze the relationship between LV functional remodeling and residual viability in the infarct zone detected by thallium-201 (Tl-201) imaging and echocardiography.
  
  
  METHODS
  We designed an observational prospective cohort study including 30 patients (26 men, 4 women, mean age; 52±12 years old) with acute anterior MI. Echocardiography and Tl-201 imaging were performed in all patients three days and two months after PCI and left ventricular end-systolic volume (ESV), left ventricular end-diastolic volume (EDV), ejection fraction (EF) and summed redistribution score (SRS) were calculated. Paired samples t- test or Wilcoxon rank sign test for comparing continuous variables in dependent groups, Pearson correlation for testing relationship between continuous variables were used.
  
  
  RESULTS
  Left ventricular function baseline values just after PCI and two months after PCI obtained by echocardiography and scintigraphy were statistically significant. Among patients 76.7% had an EF ≥0.50 after the event. EDV and ESV values are significantly low when compared to values two months before. There was not any marked change in SRS in five patients. Polar maps were correlated with heart rate (r=0.438; p=0.023), peak creatine kinase MB (r=0.440; p=0.015) and troponin (r=0.471; p=0.009) during acute MI.
  
  
  CONCLUSIONS
  Significant recovery in EDV, ESV and SRS values, and increase in EF two months after the infarction shows us substantial part of the remodeling process is completed in two months and Tl-201 imaging is extremely effective in determining of salvaged myocardium.
authors.affiliation: Department of Nuclear Medicine, Faculty of Medicine, İstanbul Medeniyet University, İstanbul-Turkey. uslusinav@hotmail.com.
authors.forename: Hatice
authors.initials: H
authors.lastname: Uslu
authors.forename: Nazmiye
authors.initials: N
authors.lastname: Cakmak
authors.forename: Melih Engin
authors.initials: ME
authors.lastname: Erkan
authors.forename: Sevim
authors.initials: S
authors.lastname: Hacımahmutoğlu
authors.forename: Sabire
authors.initials: S
authors.lastname: Yılmaz
authors.forename: Sevil
authors.initials: S
authors.lastname: Ozkan
authors.forename: Nurten
authors.initials: N
authors.lastname: Sayar
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D062645:Percutaneous Coronary Intervention; D011446:Prospective Studies; D013794:Thallium Radioisotopes; D015899:Tomography, Emission-Computed, Single-Photon; D016896:Treatment Outcome; D014463:Ultrasonography; D020257:Ventricular Remodeling
chemical_list: D013794:Thallium Radioisotopes