The cognitive side effects of modern ECT: patient experience or objective measurement?

Unmasking patient diversity: Exploring cognitive and antidepressive effects of electroconvulsive therapy

BACKGROUND

Electroconvulsive therapy (ECT) is an established treatment for depression, but more data on effectiveness and safety in clinical practice is needed. The aim of this register-based study was to investigate short-term effectiveness and cognitive safety after ECT, evaluated by clinicians and patients. Secondary, we investigated predictors for remission and cognitive decline.

METHODS

The study included 392 patients from the Regional Register for Neurostimulation Treatment in Western Norway. Depressive symptoms and cognitive function were assessed with Montgomery-Åsberg Depression Rating Scale and Mini-Mental State Examination (clinician-rated) and Beck Depression Inventory and Everyday Memory Questionnaire (patient-rated). Assessments were done prior to ECT-series and a mean of 1.7 days after (range 6 days before and 12 days after) end of ECT-series. Paired samples t-tests were extended by detailed, clinically relevant subgroups. Predictors were examined using logistic regression.

RESULTS

Clinician- and patient-rated remission rates were 49.5 and 41.0%, respectively. There was a large reduction in depressive symptoms and a small improvement in cognition after ECT, but we also identified subgroups with non-response of ECT in combination with cognitive decline (4.6% clinician-rated, 15.7% patient-rated). Positive predictors for patient- and clinician-rated remission were increasing age, shorter duration of depressive episode, and psychotic features. Antipsychotic medication at the commencement of treatment and previous ECT-treatment gave higher odds of clinician-rated remission, whereas higher pretreatment subjective depression level was associated with lower odds for patient-rated remission. Clinician-rated cognitive decline was predicted by higher pretreatment MMSE scores, whereas psychotic features, increasing age, and greater pretreatment subjective memory concerns were associated with lower odds for patient-rated cognitive decline.

CONCLUSIONS

Our study supports ECT as an effective and safe treatment, although subgroups have a less favorable outcome. ECT should be considered at an early stage for older patients suffering from depression with psychotic features. Providing comprehensive and balanced information from clinicians and patients perspectives on effects and side effects, may assist in a joint consent process.

Subjective memory impairment after electroconvulsive therapy - potentially modifiable?

Memory impairment is an important side-effect of electroconvulsive therapy (ECT). However, predicting which patients are at increased risk of developing this is difficult. The study by Sigström et al compares patients' experience of memory difficulties before and after ECT and suggests that patients with negative expectations of ECT's memory effects are more likely to have subjective memory worsening post-ECT. This intriguing finding suggests that clinicians may be able to modify the risk of patients developing subjective memory difficulties post-ECT by providing appropriate information and addressing concerns prior to treatment, during the informed consent process.

The experience of living after ECT: a qualitative meta-synthesis

BACKGROUND

Electroconvulsive therapy (ECT) is a controversial treatment. Research has predominantly focused on clinician assessment of short-term efficacy and, occasionally, on participant experiences of the treatment itself. While service user accounts of the long-term impacts of ECT are reported, they are dispersed throughout the literature and typically tangential to studie's main foci.

AIM

The aim of this study was to synthesise service-user accounts, within peer-reviewed literature, of long-term impacts of ECT in their daily lives.

METHODS

A qualitative meta-synthesis was conducted. A systematic literature search identified qualitative articles meeting the inclusion criteria. Results sections of eligible papers were analysed thematically.

RESULTS

From 16 eligible papers, the review identified 11 long-term impacts, four social influences and five strategies that people employed to navigate these long-term impacts.

CONCLUSION

Limited research has examined long-term experiences of ECT from service-user perspectives. These lived experience perspectives are required to facilitate peer-to-peer learning and assist future service delivery to align with needs of people living with long-term ECT impacts.

Long-term subjective memory after electroconvulsive therapy

BACKGROUND

There have been reports of long-term subjective memory worsening after electroconvulsive therapy (ECT).

AIMS

To study the prevalence and risk factors of long-term subjective memory worsening among patients receiving ECT in routine clinical practice.

METHOD

Patients (n = 535, of whom 277 were included in the final analysis) were recruited from eight Swedish hospitals. Participants' subjective memory impairment was assessed before ECT and a median of 73 days after ECT using the memory item from the Comprehensive Psychopathological Rating Scale. Participants also rated their pre-ECT expectations and post-ECT evaluations of the effect of ECT on memory on a 7-point scale. We used ordinal regression to identify variables associated with subjective memory worsening and negative evaluations of the effect of ECT on memory.

RESULTS

Comparisons of pre- and post-ECT assessments showed that subjective memory worsened in 16.2% of participants, remained unchanged in 52.3% and improved in 31.4%. By contrast, when asked to evaluate the effect of ECT on memory after treatment 54.6% reported a negative effect. Subjective memory worsening was associated with negative expectations before ECT, younger age and shorter duration of follow-up.

CONCLUSIONS

Although subjective memory improved more often than it worsened when assessed before and after ECT, a majority of patients reported that ECT had negative effects on their memory when retrospectively asked how ECT had affected it. This might suggest that some patients attribute pre-existing subjective memory impairment to ECT. Clinicians should be aware that negative expectations are associated with subjective worsening of memory after ECT.

The perspectives of former recipients and experts on stigmatization related to electroconvulsive therapy in Denmark: A focus group study

WHAT IS KNOWN ON THE SUBJECT?: Electroconvulsive therapy (ECT) has existed worldwide for nearly 80 years. ECT is a fast-working and potentially life-saving treatment, but it is considered controversial. Although frequently mentioned, stigmatization in relation to ECT has not been systematically explored so far. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: This paper provides new insight into both recipient and expert perspectives on ECT. It identifies several issues of stigmatization related to ECT and suggests that full recovery following ECT might be jeopardized due to both stigmatization and self-stigmatization. The study suggests that most of the stigmatizing behaviors can be ascribed to (a lack of) available knowledge of and experience with ECT. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Being aware of and listening to the needs of former ECT-recipients seems essential to increase their treatment options and support care as well as a will to prioritize this patient group. For example, by addressing the potential stigma issues in follow-up groups and helping to distribute sober, factual information about ECT in society. Providing written information and psychoeducation for patients and relatives before, during, and after ECT, in addition to supporting active use of diaries, might be valuable remedies for helping patients feel adequately informed and able to accept the pros and cons of ECT during and after treatment period. ABSTRACT: Introduction Electroconvulsive therapy (ECT) has existed worldwide for nearly 80 years. Although fast-working and potentially life-saving treatment, ECT is regarded as a strongly controversial treatment and stigmatization is frequently mentioned in relation to it. However, no systematic research in this area has taken place so far. Aim The aim of this qualitative study was to explore the experiences and attitudes of former recipients of ECT and of experts professionally involved with ECT to identify potential stigmatization. Method Two focus groups, one comprising four recipients of ECT and the other seven professional experts, were conducted. Data from each focus group were analyzed separately using a framework-analysis. Results The analysis yielded three major themes for the first focus group interview: ambivalent attitudes, discrediting and exclusion, and survival strategies and three major themes for the second focus group interview: dramatic depictions of ECT, an overlooked and rare treatment, and anti-stigmatization strategies. Discussion and implications for practice Stigmatizing attitudes and behaviors in relation to ECT are closely related to one's personal and factual knowledge, and there is a great need for multi-facetted approaches if social acceptance and recognition are to be achieved. This study provides new knowledge on a scarcely examined area while also introducing suitable methods for anti-stigmatization and empowerment.

Early effects of modern electroconvulsive therapy on subjective memory in patients with mania or depression

CONTEXT

Although electroconvulsive therapy (ECT) is considered a very effective tool for the treatment of psychiatric diseases, memory disturbances are among the most important adverse effects.

AIMS

This study aimed to assess prospectively early subjective memory complaints in depressive and manic patients due to bilateral, brief-pulse ECT, at different stages of the treatment, compare the associations between psychiatric diagnosis, sociodemographic characteristics, and ECT characteristics.

SETTINGS AND DESIGN

This prospective study was done with patients undergoing ECT between November 2008 and April 2009 at a tertiary care psychiatry hospital of 2000 beds.

MATERIALS AND METHODS

A total of 140 patients, scheduled for ECT with a diagnosis of bipolar disorder (depressive or manic episode) or unipolar depression according to Diagnostic and Statistical Manual of Mental Disorders IV diagnostic criteria, were included in the study and invited to complete the Squire Subjective Memory Questionnaire (SSMQ) before ECT, after the first and third sessions and end of ECT treatment.

STATISTICAL ANALYSIS

Mean values were compared with the Kruskal-Wallis test and comparison of the longitudinal data was performed with a nonparametric longitudinal data analysis method, F1_LD_F1 design.

RESULTS

SSMQ scores of the patients before ECT were zero. SSMQ scores showed a decrease after the first and third ECT sessions and before discharge, showing a memory disturbance after ECT and were significantly less severe in patients with mania in comparison to those with depression.

CONCLUSIONS

These findings suggest an increasing degree of subjective memory complaints with bilateral brief-pulse ECT parallel to the increasing number of ECT sessions.

Electroconvulsive therapy-induced persistent retrograde amnesia: could it be minimised by ketamine or other pharmacological approaches?

BACKGROUND

Certain pharmacological agents administered during electroconvulsive therapy may have the potential to prevent persistent retrograde amnesia induced during electroconvulsive therapy. This review examines mechanisms for electroconvulsive therapy-induced retrograde amnesia, and evaluates the suitability of the anaesthetic ketamine for preventing this amnestic outcome.

METHODS

A review of human studies, animal models and theoretical models in light of memory dysfunction following electroconvulsive therapy was conducted. MEDLINE was searched from 1950 to April 2009 using the MeSH terms "electroconvulsive therapy", "memory", "memory short term", "memory disorders", "excitatory amino acid antagonists", and "ketamine". PREMEDLINE was searched using the terms "electroconvulsive therapy", "amnesia" and "ketamine". Additional keyword and reference list searches were performed. No language, date constraints or article type constraints were used.

RESULTS

Disruption of long term potentiation as a mechanism for electroconvulsive therapy-induced retrograde amnesia is well supported. Based on this putative mechanism, an N-methyl-D-aspartate receptor antagonist would appear suitable for preventing the retrograde amnesia. Available evidence in animals and humans supports the prediction that ketamine, an anaesthetic agent and N-methyl-D-aspartate receptor antagonist, could effectively prevent electroconvulsive therapy-induced persistent retrograde amnesia. Whilst there are concerns about the use of ketamine with electroconvulsive therapy, such as possible psychotomimetic effects, on balance this anaesthetic agent may improve or hasten clinical response to electroconvulsive therapy.

CONCLUSIONS

A clinical trial is warranted to determine if ketamine anaesthesia during electroconvulsive therapy can lessen persistent retrograde amnesia and improve therapeutic response. Electroconvulsive therapy with ketamine anaesthesia may provide effective antidepressant action with minimal side effects.

Electroconvulsive therapy: a review of knowledge, experience and attitudes of patients concerning the treatment

OBJECTIVES

Despite its proven efficacy and safety, electroconvulsive therapy (ECT) has a negative image and attracts widespread public criticism. In contrast, perceptions of patients who have received ECT appear to be more favourable. This review intended to encapsulate the evidence on knowledge and views concerning ECT among its recipients.

METHODS

Extensive electronic and manual searches were conducted to identify all relevant studies on the subject.

RESULTS

Seventy-five reports were found suitable. The evidence from these studies suggested that patients undergoing ECT were usually poorly informed about it. This was attributable to factors such as unsatisfactory pre-treatment explanations or post-ECT memory impairment. About one-third undergoing ECT reported feeling coerced to have the treatment. Fear of ECT and distressing side effects were also present in a majority. Despite these problems, a vast majority of patients perceived ECT to be helpful and had positive views regarding the treatment. Simultaneously, a sizeable proportion was quite critical, although little was known about the extent and nature of such disapproval.

CONCLUSIONS

Overall, the weight of the evidence supports the notion that patients undergoing ECT are well-disposed towards it. However, much needs to be done to improve the practice of ECT and to enhance patients' satisfaction with the experience of treatment.

Electroconvulsive therapy: the struggles in the decision-making process and the aftermath of treatment

The perceptions of patients and their family members about electroconvulsive therapy (ECT) are crucial to understanding the meaning attached to having ECT and the impact it has on quality of life. Thus, in this qualitative study, patients and their family members described their perceptions of having electroconvulsive therapy (ECT). The experience occurred in two distinct periods in the patient's life: making the decision to have ECT and the physical and emotional aftermath of treatment. One of the most important themes in the study was a need for patients and families to be better informed about the risks of ECT.