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Depression following myocardial infarction: a one year longitudinal study
J I Travella1, A W Forrester, S K Schultz
1University of Iowa College of Medicine, Iowa City, USA.
Insights
Depression following myocardial infarction (MI) can manifest acutely, causing functional impairment, or persist, potentially linked to social support issues. Further research is needed due to limited follow-up participation.
Area of Science:
- Cardiology
- Psychiatry
- Clinical Psychology
Background:
- Depression is a common comorbidity following myocardial infarction (MI).
- Understanding the trajectory and impact of depression post-MI is crucial for patient outcomes.
Purpose of the Study:
- To investigate the course and clinical correlates of depression in the first year after myocardial infarction.
- To identify factors associated with depression in patients recovering from MI.
Main Methods:
- Seventy patients hospitalized for MI were assessed for mood disorders at admission and at 3, 6, 9, and 12 months post-discharge.
- Diagnosis of depression used the Present State Examination and DSM-III criteria.
- Functional impairment was measured using the Johns Hopkins Functioning Inventory and Social Functioning Examination.
Main Results:
- Twenty-four patients experienced major depression (18 acute, 6 follow-up); 8 experienced minor depression.
- Major depression had a median duration of 4.5 months.
- Depression at intake correlated with greater daily living impairment; prolonged depression (>6 months) was more often anxious; post-MI depression consistently related to impaired social functioning.
Conclusions:
- This pilot study suggests two depression patterns post-MI: acute, linked to functional impairment, and prolonged, potentially related to poor social support.
- Low follow-up participation necessitates replication.
- Findings highlight the importance of assessing and managing depression after myocardial infarction.
Objective:
The purpose of this study was to examine the course and clinical correlates of depression during the first year after myocardial infarction.
Method:
A group of seventy patients hospitalized for the treatment of myocardial infarction (MI) were assessed for the presence of mood disorders during their hospital admission and at three, six, nine, and twelve months follow-up. Patients were evaluated and diagnosed using the Present State Examination and DSM-III criteria. Impairment in activities of daily living was measured by the Johns Hopkins Functioning Inventory and impairment in social functioning was measured by the Social Functioning Examination.
Results:
A total of twenty-four patients met DSM-III criteria for major depression at some time during the study (18 in the acute stage, 6 during follow-up). There were two patients with minor depression (dysthymia) at intake and six developed minor depression during the follow-up period. The median duration of major depression was 4.5 months. Patients with depression at intake had greater impairment in activities of daily living than non-depressed patients. Depressions lasting more than six months were more likely to be anxious depressions than those lasting less than six months. After the acute MI period, there was a consistent relationship between the existence of depression and impaired social functioning.
Conclusions:
This is a pilot study and needs further replication due to the low rate of follow-up participation. However, these data suggest that there may be two types of depression following MI: an acute depression associated with greater functional impairment, and a prolonged depression that may be associated with inadequate social support.