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June 28, 2017International Journal of Geriatric Psychiatry11 citationsOpen Access

Vascular risk factors in older patients with depression: outcome of electroconvulsive therapy versus medication

HSHarm‐Pieter SpaansRKRob KokFBFilip Bouckaert

Key Result

Electroconvulsive therapy achieved a significantly higher overall remission rate (62.8%) compared to medication (32.1%) in older patients with severe depression, independent of the presence of vascular risk factors.

Study Design

Type

Observational (n=124)

Multicenter

Yes

Structured PICO

Does electroconvulsive therapy improve remission of depressive symptoms compared to medication in older patients with depression and vascular risk factors?

P
Population
124 inpatients with DSM-IV unipolar major depression (age ≥60, baseline MADRS score ≥20), including 81 from a medication trial (mean age 72.2) and 43 from an ECT trial (mean age 73.7).
I
Intervention
Electroconvulsive therapy (ECT) (right unilateral brief pulse or ultrabrief pulse) for up to 6 weeks.
C
Comparator
Antidepressant medication (nortriptyline or venlafaxine) for up to 12 weeks.
O
Outcome
Remission of depressive symptoms defined as a Montgomery-Åsberg Depression Rating Scale (MADRS) score < 10.patient reported

Electroconvulsive therapy is more efficacious than antidepressant medication for severe depression in older adults, and this advantage is not modified by the presence of vascular risk factors.

Main Result

Absolute Event Rate: 62.8% vs 32.1%

p-value: p=0.001

Limitations

  • Maximum treatment duration differed between the original RCTs (6 weeks for the ECT study and 12 weeks for the medication study)
  • Retrospective design could not control for potential confounders through randomization, such as differences in treatment strategies for vascular risk factors
  • Inability to include potentially relevant covariates such as cognition, psychiatric, and somatic morbidity due to divergent means of assessment
  • Lack of objective measures of vascular changes (e.g., MRI)
  • Small number of participants without vascular risk factors limits statistical power for that subgroup
  • Maximum treatment duration differed between the original RCTs (6 weeks for ECT vs 12 weeks for medication)
  • Retrospective design could not control for potential confounders such as differences in treatment strategies for vascular risk factors
  • Small number of participants without vascular risk factors

Abstract

OBJECTIVE: Research suggests that in depression, vascular burden predicts a lower efficacy for medication (MED) and a more favourable outcome for electroconvulsive therapy (ECT). Therefore, we investigated the influence of the following vascular risk factors (VRF): hypercholesterolemia, hypertension, smoking, diabetes mellitus, cardiovascular disease, and cerebral vascular accident/transient ischemic attack, on remission from major depression after ECT versus MED. METHODS: The study sample consisted of 81 inpatients with a DSM-IV unipolar major depression diagnosis (mean age 72.2 years, SD = 7.6, mean Montgomery-Åsberg Depression Rating Scale score 32.9, SD = 6.2) participating in a randomized controlled trial comparing nortriptyline versus venlafaxine and 43 inpatients (mean age 73.7 years, SD = 7.5, mean Montgomery-Åsberg Depression Rating Scale score 30.6, SD = 7.1) from an randomized controlled trial comparing brief pulse versus ultrabrief pulse ECT. The presence of VRF was established from the medical records. The remission rate of patients with VRF was compared with those of patients without VRF. RESULTS: = 0.119, p = 0.707) in MED patients. Applying different cut-offs for the number of VRFs yielded the same trends. Logistic regression revealed no interaction between VRF and treatment condition. CONCLUSION: The superior efficacy of ECT over pharmacotherapy in major depression in older age was independent of the presence of VRF. Copyright © 2017 John Wiley & Sons, Ltd.

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Cite This Study

Spaans et al. (2017) conducted an observational in Major depression in older patients (n=124). Electroconvulsive therapy (ECT) vs. Antidepressant medication (nortriptyline or venlafaxine) was evaluated on Remission of depressive symptoms (MADRS score < 10) (p=0.001). Electroconvulsive therapy achieved a significantly higher overall remission rate (62.8%) compared to medication (32.1%) in older patients with severe depression, independent of the presence of vascular risk factors.

synapsesocial.com/papers/6a16a2934bd866d2cab250d2https://doi.org/10.1002/gps.4754
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