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Heart rate variability in elderly patients before and after electroconvulsive therapy
E Nahshoni1, D Aizenberg, M Sigler
1Psychogeriatrics Department and Research Unit, Geha Psychiatric Hospital, Petah Tikva, Israel.
Summary
Electroconvulsive therapy (ECT) improved cardiac vagal modulation in elderly patients with major depression. This enhancement correlated with reduced depression symptoms, suggesting a link between autonomic function and treatment efficacy.
Area of Science:
- Geriatric Psychiatry
- Cardiology
- Autonomic Neuroscience
Background:
- Major depression is linked to increased cardiac mortality, potentially due to reduced vagal modulation.
- Reduced heart rate variability, a marker of vagal function, is common in aging, increasing cardiac risk in elderly depressed patients.
Purpose of the Study:
- To investigate cardiac autonomic modulation in elderly patients with major depression.
- To assess the impact of electroconvulsive therapy (ECT) on cardiac autonomic function and its relation to depression symptom severity.
Main Methods:
- Spectral analysis of heart rate variability was used to assess cardiac autonomic modulation.
- Measurements were taken in 11 elderly depressed inpatients before and after ECT.
- Depression symptom severity was evaluated using the Hamilton Rating Scale for Depression.
Main Results:
- Cardiac vagal modulation significantly increased after ECT.
- The increase in vagal modulation was associated with a significant decrease in depression symptoms.
- ECT demonstrated a positive effect on autonomic function in this patient group.
Conclusions:
- ECT may improve cardiac autonomic modulation in elderly patients with major depression.
- Enhanced vagal function following ECT correlates with clinical improvement.
- Further research is warranted to clarify the interplay between depression, autonomic function, and cardiovascular risk in the elderly.