title: [Safety of early cardiac magnetic resonance imaging in acute myocardial infarction patients with stents].
abstract: OBJECTIVE
  In general, magnetic resonance imaging is contraindicated when the patient has a ferromagnetic prosthesis or implant. With coronary stents, there is a theoretical concern that use of magnetic resonance imaging shortly after implantation will dislodge the stent, thereby increasing the risk of thrombosis. However, the risk may be overestimated because modern coronary stents are not ferromagnetic or are only weakly so. The objective of this study was to determine whether carrying out cardiac magnetic resonance imaging shortly after stent implantation is a safe procedure in acute myocardial infarction patients.
  
  
  METHODS
  We carried out a retrospective study of 407 patients with ST-elevation acute myocardial infarction who were treated by stent implantation. Cardiac magnetic resonance imaging was performed in the first 14 (11) days after stent implantation in 86 of these 407 patients (group 1); it was not performed in the 321 patients in group 2. The occurrence of an adverse event, such as death, reinfarction, or revascularization, either in hospital or after 6 or 12 months was recorded.
  
  
  RESULTS
  Three patients experienced subacute stent thrombosis, all in group 2. No statistically significant difference in any other variable was found. The combined rate of death, reinfarction, revascularization, or rehospitalization at 12 months was 14% in group 1 and 16% in group 2 (P=.7).
  
  
  CONCLUSIONS
  Carrying out cardiac magnetic resonance imaging shortly after stent implantation in acute myocardial infarction patients appears to be a safe procedure.
authors.affiliation: Servicio de Cardiología, Hospital General Yagüe, Burgos, Spain. paula_tejedor@yahoo.es
authors.forename: Paula
authors.initials: P
authors.lastname: Tejedor-Viñuela
authors.forename: José A
authors.initials: JA
authors.lastname: San Román-Calvar
authors.forename: Juan M
authors.initials: JM
authors.lastname: Durán-Hernández
authors.forename: Itziar
authors.initials: I
authors.lastname: Gómez-Salvador
authors.forename: José
authors.initials: J
authors.lastname: Sierra-Román
authors.forename: Francisco
authors.initials: F
authors.lastname: Fernández-Avilés
mesh_terms: D000075202:Contraindications; D052276:Creatine Kinase, BB Form / Q000097:blood; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000601:surgery*; D012008:Recurrence; D012189:Retrospective Studies; D012449:Safety; D015607:Stents
chemical_list: D052276:Creatine Kinase, BB Form