Evidence map›Paper›PMID 33752777›Full record

ArticleBJPsych open2021

The effect of anaesthetic dose on response and remission in electroconvulsive therapy for major depressive disorder: nationwide register-based cohort study.

Alexander Kronsell, Axel Nordenskjöld, Max Bell, Ridwanul Amin, Ellenor Mittendorfer-Rutz, Mikael Tiger

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in BJPsych open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05308056 (Depth of Anetshesia During Electroconvulsive Therapy), which is not on this map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.2field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05308056 completednot on this mapstarted 2022, after this paper: background citation

Depth of Anetshesia During Electroconvulsive Therapy

TypeobservationalSponsorRegion Örebro CountyRan2022 to 2023Enrolled37ConditionsMood Disorders, Psychotic DisordersArmsDepth of anesthesia monitor, SedLine® (Masimo, Irvine, CA, USA)
3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 12 citations in OpenAlex.

  1. Effect of ECT-anesthetics on reorientation time.European archives of psychiatry and clinical neuroscience · 2026
    Article
  2. Article
  3. Observational
  4. Article
  5. Review
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Alexander KronsellDivision of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Sweden.ORCID https://orcid.org/0000-0002-2382-2651
Axel NordenskjöldFaculty of Medicine and Health, Örebro University, Sweden.
Max BellDepartment of Anaesthesiology, Surgical Services and Intensive Care, Karolinska University Hospital, Sweden; and Department of Physiology and Pharmacology, Karolinska Institutet, Sweden.
Ridwanul AminDivision of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Sweden.ORCID https://orcid.org/0000-0002-4491-3990
Ellenor Mittendorfer-RutzDivision of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Sweden.
Mikael TigerCentre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Sweden; and Stockholm Health Care Services, Region Stockholm, Sweden.
Karolinska Institutet · SEKarolinska University Hospital · SEÖrebro University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundElectroconvulsive therapy (ECT) is a safe and effective treatment for major depressive disorder (MDD). ECT treatment effect relies on induced generalised seizures. Most anaesthetics raise the seizure threshold and shorten seizure duration. There are no conclusive studies on the effect of anaesthetic dose on response and remission rates with ECT for MDD.

aimsWe aimed to examine the effect of different dose intervals of anaesthetics on response and remission after ECT for MDD.

methodWe conducted a nationwide cohort study, using data from Swedish registers. Low-, medium- and high-dose intervals, adjusted for age and gender, were constructed for each anaesthetic drug. Response and remission were measured with the Clinical Global Impression - Severity and Improvement scales (CGI-I and CGI-S), and a self-rated version of the Montgomery-Åsberg Depression Rating Scale (MADRS-S). Logistic regression models were used to calculate adjusted odds ratios for response and remission rates.

resultsThe study included 7917 patients who received ECT for MDD during 2012-2018. Patients were given either thiopental (64.1%) or propofol (35.9%). Low-dose intervals of anaesthetics were associated with increased rates of response (CGI-I: odds ratio 1.22, 95% CI 1.07-1.40, P = 0.004; MADRS-S: odds ratio 1.31, 95% CI 1.09-1.56, P = 0.004) and remission (CGI-S: odds ratio 1.37, 95% CI 1.17-1.60, P ≤ 0.001; MADRS-S: odds ratio 1.31, 95% CI 1.10-1.54, P = 0.002).

conclusionsWe found improved treatment outcomes with low- compared with high-dose anaesthetic during ECT for MDD. To enhance treatment effect, deep anaesthesia during ECT for MDD should be avoided.

Indexed as

antidepressantsDepressive disorderselectroconvulsive therapyepidemiologyoutcome studies

Identifiers

PMID33752777
PMCPMC8058839
OpenAlexW3139534644

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.