The epidemiological and clinical characteristics of patients admitted for coronary angiography to evaluate ischemic heart disease.
BACKGROUND
Most of the known risk factors associated with ischemic heart disease are based on studies from Western countries; there is only limited information on Korean populations. This study was designed to analyze age related differences in epidemiologic and clinical characteristics in patients who were admitted for coronary angiography for the evaluation of ischemic heart disease.


METHODS
As part of the multicenter KCAR (Korean Coronary Artery disease Registry) Study, the clinical data of 6,549 patients, who were evaluated at the cardiac catheterization laboratory by coronary angiography, at seven university hospitals in Korea from March 1999 to December 2005, were registered into the KCAR database and analyzed. All patients were divided into three groups according to age: age < or = 40, age 41-70 and age > or = 71. All demographic and coronary angiographic features were analyzed for the different groups.


RESULTS
The demographic data showed that compared to the older patients young patients < or = 40 had a higher prevalence of males and smokers, but a lower prevalence of hypertension, diabetes and prior history of stroke and myocardial infarction. For the lipid profiles, the younger patients had much higher levels of total cholesterol, triglycerides and LDL-cholesterol than the older groups; however, there was no difference in the HDL-cholesterol levels among the three age groups. The most common component of the metabolic syndrome was obesity (79%) in the younger patients and hypertension (92%) in the older patients. The most common reason for presentation was ST-segment elevated myocardial infarction in the younger patients and unstable angina in the older patients.


CONCLUSIONS
Ischemic heart disease in younger adults < or = 40 had different demographic characteristics and clinical presentation than older patients.
Park
Jong Seon
JS
Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea.
Lee
Hyun Ju
HJ
Kim
Young Jo
YJ
Seong
In Whan
IW
Lee
Jae Whan
JW
Kim
Jong Jin
JJ
Cho
Jin Man
JM
Cho
Myung Chan
MC
Bae
Jang Whan
JW
Jung
Myung Ho
MH
Ahn
Young Kun
YK
Han
Kyu Rok
KR
Lee
Jun Hee
JH
Kim
Mu Hyun
MH
D000328:Adult; D000367:Age Factors; D000368:Aged; D017023:Coronary Angiography; D048909:Diabetes Complications / Q000453:epidemiology; D005260:Female; D006785:Hospitals, University; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D007723:Korea / Q000453:epidemiology; D008297:Male; D024821:Metabolic Syndrome / Q000453:epidemiology; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000453:epidemiology*; D015995:Prevalence; D011446:Prospective Studies; D012042:Registries; D012307:Risk Factors; D012907:Smoking