title: Haemorheological parameters in young patients with acute myocardial infarction.
abstract: The role played by hemorheological alterations on acute myocardial infarction (AMI) in young patients remains a question of debate. We have carried out a case-control study of 84 AMI patients aged <45 years and 135 sex and age matched controls, in which blood viscosity (BV), plasma viscosity (PV), erythrocyte aggregation (EA) performed with the Myrenne (EA0, EA1) and the Sefam aggregometer (Ta, AI10, gammaD), erythrocyte deformability (ED) along with fibrinogen (Fbg), C-reactive protein (CRP) and plasmatic lipids i.e. total cholesterol (T-Chol) and triglycerides (TG) were determined. AMI patients showed higher, Fbg, TG, EA0, EA1, IA10, gammaD and lower Ta than controls (p=0.029, p<0.001, p=0.013, p=0.003, p=0.010, p=0.025) respectively. No differences in the other rheological parameters were observed. No differences in any rheological parameter were observed regarding the AMI type, number and score of stenosed vessels and the time elapsed since the thrombotic event. After multivariate adjustment, Fbg>380 ml/dl and TG>185 ml/dl were independently associated with a higher risk of erythrocyte hyperaggregability (OR: 5.5 CI 95% 1.04-29.27 and OR: 7.3 CI 95% 2.66-20.03) respectively. EA>8.85 was associated with a increased AMI risk (OR: 5.3 CI 95% 1.98-14.5). These results reinforces the view that in young AMI patients increased Fbg and TG may promote the development of ischaemic events not only through its known mechanism but also by altering rheological blood behaviour, mainly increasing EA.
authors.affiliation: Intensive Care Unit, La Fe University Hospital, Valencia, Spain.
authors.forename: Esther
authors.initials: E
authors.lastname: Zorio
authors.forename: Julián
authors.initials: J
authors.lastname: Murado
authors.forename: David
authors.initials: D
authors.lastname: Arizo
authors.forename: Joaquín
authors.initials: J
authors.lastname: Rueda
authors.forename: Dolores
authors.initials: D
authors.lastname: Corella
authors.forename: María
authors.initials: M
authors.lastname: Simó
authors.forename: Amparo
authors.initials: A
authors.lastname: Vayá
mesh_terms: D000328:Adult; D001809:Blood Viscosity; D002097:C-Reactive Protein / Q000378:metabolism; D016022:Case-Control Studies; D004903:Erythrocyte Aggregation; D004907:Erythrocyte Deformability; D004912:Erythrocytes / Q000166:cytology / Q000378:metabolism; D005260:Female; D005340:Fibrinogen / Q000378:metabolism; D018056:Hemorheology / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood*; D012306:Risk
chemical_list: D005340:Fibrinogen; D002097:C-Reactive Protein