[Major depression as a new risk factor for coronary heart disease in Chile].
BACKGROUND
Major depression, a frequent psychiatric disease, is associated with ischemic heart disease. It is usually subdiagnosed and subtreated.


OBJECTIVE
To study the prevalence of major depression among survivors of an acute myocardial infarction.


METHODS
Retrospective study of 42 survivors of an acute myocardial infarction treated at a regional Chilean Hospital. The presence of major depression in the 6 months previous to the acute myocardial infarction, was investigated using the diagnostic instruments CIDI (Composite International Diagnostic Interview) and DIS (Diagnostic Interview Schedule), psychiatric diagnoses were based on DSMIII-R. The prevalence of depression was compared with that observed in a group of 156 healthy subjects participating in a psychiatric epidemiological study.


RESULTS
Major depression was diagnosed in 12 male subjects with an acute myocardial infarction. The prevalence in the control group was significantly lower (15%, p < 0.049). Patients with depression were older and required longer hospital stay than patients without depression.


CONCLUSIONS
Patients with acute myocardial infarction, had a significantly greater prevalence of major depression in the previous 6 months, than the general population. Thus, major depression could be an independent and modifiable coronary risk factor.
Araya
María Virginia
MV
Centro de Cardiología Cardiokines Clinics, Servicio de Psiquiatría, Unidad de Epidemiología, Hospital Dr. E Torres G. Iquique, Chile. mvaraya@terra.cl
Madariaga
Carlos
C
Ureta
Carlos
C
Tomé
Mónica
M
Bustos
Carlos
C
D000328:Adult; D017677:Age Distribution; D000368:Aged; D002677:Chile / Q000453:epidemiology; D003865:Major Depressive Disorder / Q000453:epidemiology / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology / Q000523:psychology*; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D017678:Sex Distribution