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Published on: May 22, 2019
Effect of cerebrovascular risk factors on depression treatment outcome in later life
Mark D Miller1, Eric J Lenze, Mary Amanda Dew
1Intervention Research Center in Late-Life Mood Disorders, Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, Pittsburgh, PA 15213, USA. millermd@msx.upmc.edu
Insights
High cerebrovascular risk factors (CVRF) in late-life depression do not negatively impact treatment outcomes or predict specific clinical features. This suggests optimism for treating late-life depression, regardless of vascular risk.
Area of Science:
- Geriatric Psychiatry
- Neuroscience
- Cardiovascular Health
Background:
- The vascular depression hypothesis suggests late-life depression stems from cerebrovascular damage, leading to distinct, chronic, and treatment-resistant presentations.
- Understanding the influence of cerebrovascular risk factors (CVRF) on late-life depression is crucial for effective treatment strategies.
Purpose of the Study:
- To investigate the relationship between CVRF and the clinical presentation of late-life recurrent major depression.
- To assess the impact of CVRF on treatment outcomes, including time to remission and recurrence risk, in a long-term maintenance study.
Main Methods:
- 156 subjects with late-life recurrent major depression were enrolled in a long-term maintenance treatment study.
- Cerebrovascular risk factor (CVRF) scores were calculated using the Probability of Stroke Risk Profile.
- Subjects were categorized into High CVRF and non-High CVRF groups for comparative analysis of clinical presentation and treatment outcomes.
Main Results:
- A higher proportion of subjects in the High CVRF group experienced first-onset depression after age 60.
- High CVRF score, late onset of depression, or their interaction did not affect time to remission, need for adjunctive medication, or recurrence risk over 3 years.
- High CVRF and late onset depression did not predict characteristic clinical features of vascular depression, such as psychomotor retardation or lack of insight.
Conclusions:
- The presence of high cerebrovascular risk does not appear to diminish the prognosis for late-life depression treatment outcomes.
- Clinicians can maintain optimism regarding treatment efficacy for late-life depression, even in the presence of significant vascular risk factors.
Objective:
The vascular depression hypothesis posits that depression can arise in late life from cerebrovascular damage and that depression arising this way has a different clinical presentation and is more chronic and treatment-resistant than early-onset depression. This study tested the relationship of cerebrovascular risk factors (CVRF) to clinical presentation and treatment outcome in 156 subjects enrolled in a long-term maintenance treatment study of late-life recurrent major depression.
Methods:
CVRF scores were generated with the Probability of Stroke Risk Profile. Subjects with the highest one-third of scores were designated High CVRF, and their baseline clinical presentation and treatment outcomes were compared with the remaining subjects.
Results:
In the High-CVRF group, a greater proportion of subjects had first-onset depression after age 60. However, high CVRF score, late onset of depression, and their interaction had no effect on time-to-remission, need for adjunctive medication, or increased risk for recurrence during 3-year follow-up. Furthermore, high CVRF score and late onset of depression did not predict the associated clinical features of vascular depression, such as psychomotor retardation and lack of insight, previously described in the literature.
Conclusion:
Optimism about the outcome of late-life depression treatment should not be diminished by the presence of high cerebrovascular risk.
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