Relationship between left ventricular dysfunction and depression following myocardial infarction: data from the...

Area of Science:

• Cardiology
• Psychiatry
• Clinical Research

Background:

• Depression following myocardial infarction (MI) is linked to increased mortality.
• This association may be confounded by the severity of cardiac disease.

Purpose of the Study:

• To explore the relationship between left ventricular ejection fraction (LVEF) and depression in patients post-MI.

Main Methods:

• The Myocardial Infarction and Depression-Intervention Trial (MIND-IT) assessed 1989 MI patients for depressive symptoms using the Beck Depression Inventory (BDI).
• Patients with BDI scores >= 10 were evaluated for International Classification of Diseases, 10th revision (ICD-10) depressive disorder.
• Patients were categorized by LVEF (<30%, 30-45%, 45-60%, > or = 60%).

Main Results:

• Depressive symptoms were more prevalent in patients with left ventricular (LV) dysfunction during hospitalization.
• A significant inverse relationship was observed between LVEF and depression rates (ICD-10) from 3 to 12 months post-MI (P < 0.01).
• Lower LVEF inversely correlated with BDI scores at 3 months post-MI, persisting after adjustments.

Conclusions:

• The rate and severity of depression in MI patients are significantly associated with the severity of LV dysfunction.
• This link between depression and LV dysfunction is crucial for interpreting the prognostic impact of depression in cardiac patients.