title: Age-dependent differences in presentation, risk factor profile, and outcome of suspected acute coronary syndrome.
abstract: OBJECTIVE
  To compare the presenting complaint, risk factors, and outcome of suspected acute coronary syndrome (ACS) in those aged 65 and older with those of a younger cohort.
  
  
  METHODS
  Prospective observational cohort study.
  
  
  METHODS
  A typical Scottish district general hospital covering a population of 150,000.
  
  
  METHODS
  Patients presenting with suspected ACS (N=869) over a 6-month period.
  
  
  METHODS
  Main presenting complaint and major risk factors including electrocardiogram (ECG) changes. Primary outcome measures were percutaneous coronary intervention, recurrent myocardial infarction, and death at 3-month follow-up.
  
  
  RESULTS
  Four hundred seventy-seven (55%) were aged 65 and older. Older patients were less likely to present with chest pain and more likely to present with breathlessness or collapse. They had fewer major risk factors for heart disease. There was a higher proportion with ischemic ECG changes, elevated troponin, and major acute coronary events at follow-up. Older patients were less likely to be accepted for angiography even though they were more likely than the younger cohort to have significant coronary artery disease when angiography was performed (chi-square test, P<.01 for all above).
  
  
  CONCLUSIONS
  Older patients with suspected ACS were more likely to present atypically and have worse outcomes than their younger counterparts, despite having fewer major risk factors. The results highlight the importance of age as a predictor of adverse outcome and suggest that clinicians need to ensure equitable access to angiography for older patients.
authors.affiliation: Department of Medicine for the Elderly, Woodend Hospital, Aberdeen, United Kingdom. roysoiza@doctors.org.uk
authors.forename: Roy L
authors.initials: RL
authors.lastname: Soiza
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Leslie
authors.forename: Kirsten
authors.initials: K
authors.lastname: Harrild
authors.forename: Norman R
authors.initials: NR
authors.lastname: Peden
authors.forename: Allister D
authors.initials: AD
authors.lastname: Hargreaves
mesh_terms: D000367:Age Factors; D015906:Angioplasty, Balloon, Coronary / Q000706:statistics & numerical data; D015331:Cohort Studies; D017023:Coronary Angiography / Q000706:statistics & numerical data; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000209:etiology / Q000401:mortality; D003937:Diagnosis, Differential; D005260:Female; D006297:Health Services Accessibility / Q000706:statistics & numerical data; D006769:Hospitals, General; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000209:etiology / Q000401:mortality; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data; D011446:Prospective Studies; D012307:Risk Factors; D012606:Scotland; D013577:Syndrome