title: Premature coronary artery disease in North India: an angiography study of 1971 patients.
abstract: BACKGROUND
  South Asians, specially Indians, show increased risk for atherosclerosis and have the highest mortality rates due to coronary artery disease amongst all ethnic groups studied so far. We aimed to find out the differences in clinical-biochemical and angiographic profile of young patients versus older patients with angiographically proven atherosclerotic coronary artery disease.
  
  
  RESULTS
  Group I (n=828) consisted of patients with age above 55 years (mean age: 63.15 +/- 5.76 years), group II (n=924, mean age: 49.13 +/- 4.25 years) consisted of patients between age 41-55 years and group III (n=219) consisted of patients with age < or = 40 years (mean age: 37.37 +/- 2.92 years). Among the conventional risk factors, smoking was significantly more frequent in group III, while diabetes mellitus and systemic hypertension were more prevalent in groups II and I. Q wave myocardial infarction was more frequently present in groups II and III. Only about one-third of the entire patient population in the myocardial infarction group received thrombolytic therapy. Total cholesterol, low-density lipoprotein cholesterol, and triglyceride levels were significantly higher in younger patients (groups II and III), while high-density lipoprotein cholesterol was significantly low in whole cohort but more so in older patients. Single vessel involvement was more common in group III, while multi-vessel involvement, diffuse disease and fluoroscopic calcium were more common in groups I and II.
  
  
  CONCLUSIONS
  Significant differences were observed in the clinical, biochemical and angiographic profile of young patients with coronary artery disease as compared to elderly patients. The younger cohort had more atherogenic lipid profile, higher prevalence of smoking and more frequent single vessel disease. We observed that total cholesterol/high-density lipoprotein cholesterol ratio was a better predictor of coronary artery disease as compared to individual lipid levels.
authors.affiliation: Department of Cardiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow. stewari@sgpgi.ac.in
authors.forename: Satyendra
authors.initials: S
authors.lastname: Tewari
authors.forename: Sudeep
authors.initials: S
authors.lastname: Kumar
authors.forename: Aditya
authors.initials: A
authors.lastname: Kapoor
authors.forename: Uttam
authors.initials: U
authors.lastname: Singh
authors.forename: Ajay
authors.initials: A
authors.lastname: Agarwal
authors.forename: B B
authors.initials: BB
authors.lastname: Bharti
authors.forename: Naveen
authors.initials: N
authors.lastname: Garg
authors.forename: P K
authors.initials: PK
authors.lastname: Goel
authors.forename: Nakul
authors.initials: N
authors.lastname: Sinha
mesh_terms: D000328:Adult; D015897:Comorbidity; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000097:blood / Q000453:epidemiology; D003327:Coronary Disease / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000453:epidemiology; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000188:drug therapy; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology; D015912:Thrombolytic Therapy