title: Clinical significance of baseline platelet reactivity in patients with acute coronary syndrome.
abstract: The aim of this study was to assess the baseline platelet hyperactivity in patients with acute coronary syndrome (ACS) and correlate it with the disease severity and clinical outcome.
  
  
  METHODS
  This study was conducted on 60 patients with the first attack of non-ST-segment elevation ACS and 30 healthy controls. Patients were subdivided into 2 groups: group I: 40 patients with non-ST-segment elevation myocardial infarction (NSTEMI) and group II: 20 patients with unstable angina. All the studied patients were subjected to baseline platelet function analysis using platelet function analyzer 100 (PFA-100).
  
  
  RESULTS
  Group I patients showed significantly lower PFA-100 closure time (CT) than group II (P = .04) and control group (P = .03). The occurrence of complications in NSTEMI patients was associated with older age, hypertension, and shorter baseline collagen adenosine diphosphate PFA-100 CT (P < .05).
  
  
  CONCLUSIONS
  NSTEMI patients proved to have enhanced platelet function that can be used as a predictor of the outcome.
authors.affiliation: Department of Clinical Pathology, Ain Shams University, Cairo, Egypt.
authors.forename: Hebatallah A
authors.initials: HA
authors.lastname: Sedky
authors.forename: Dahlia A
authors.initials: DA
authors.lastname: El-Sewefy
authors.forename: Abeer A
authors.initials: AA
authors.lastname: Saad
authors.forename: Mohamed I
authors.initials: MI
authors.lastname: Ahmed
authors.forename: Heba M A
authors.initials: HM
authors.lastname: El-Maraghy
mesh_terms: D054058:Acute Coronary Syndrome / Q000097:blood*; D000328:Adult; D000368:Aged; D001792:Blood Platelets / Q000502:physiology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged