Evidence map›Paper›PMID 32641361›Full record

ArticleBMJ open2020

Effects of beta-blocker therapy on mortality after elective colon cancer surgery: a Swedish nationwide cohort study.

Rebecka Ahl, Peter Matthiessen, Gabriel Sjölin, Yang Cao, Göran Wallin, Olle Ljungqvist, Shahin Mohseni

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 8% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.

  1. Pooled it
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  12. A nationwide analysis on the interaction between frailty and beta-blocker therapy in hip fracture patients.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2023
    Article
  13. Nerves in gastrointestinal cancer: from mechanism to modulations.Nature reviews. Gastroenterology & hepatology · 2022
    Review
  14. Review
  15. Article
  16. Mitigating the stress response to improve outcomes for older patients undergoing emergency surgery with the addition of beta-adrenergic blockade.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2022
    Review
  17. Article
  18. Observational
  19. Article
  20. Statin therapy and postoperative short-term mortality after rectal cancer surgery.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2021
    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

7 authors at 2 institutions in 1 country.

Rebecka AhlDepartment of Surgery, Karolinska University Hospital, Stockholm, Sweden.
Peter MatthiessenSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden.
Gabriel SjölinSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden.
Yang CaoSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden.ORCID 0000-0002-3552-9153
Göran WallinSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden.
Olle LjungqvistSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden.
Shahin MohseniSchool of Health and Medical Sciences, Örebro University, Örebro, Sweden mohsenishahin@yahoo.com.ORCID 0000-0001-7097-487X
Örebro University · SEKarolinska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveColon cancer surgery remains associated with substantial postoperative morbidity and mortality despite advances in surgical techniques and care. The trauma of surgery triggers adrenergic hyperactivation which drives adverse stress responses. We hypothesised that outcome benefits are gained by reducing the effects of hyperadrenergic activity with beta-blocker therapy in patients undergoing colon cancer surgery. This study aims to test this hypothesis.

designRetrospective cohort study. SETTING AND

participantsThis is a nationwide study which includes all adult patients undergoing elective colon cancer surgery in Sweden over 10 years. Patient data were collected from the Swedish Colorectal Cancer Registry. The national drugs registry was used to obtain information about beta-blocker use. Patients were subdivided into exposed and unexposed groups. The association between beta-blockade, short-term and long-term mortality was evaluated using Poisson regression, Kaplan-Meier curves and Cox regression. PRIMARY AND SECONDARY OUTCOMES: Primary outcome of interest was 1-year all-cause mortality. Secondary outcomes included 90-day all-cause and 5-year cancer-specific mortality.

resultsThe study included 22 337 patients of whom 36.1% were prescribed preoperative beta-blockers. Survival was higher in patients on beta-blockers up to 1 year after surgery despite this group being significantly older and of higher comorbidity. Regression analysis demonstrated significant reductions in 90-day deaths (IRR 0.29, 95% CI 0.24 to 0.35, p<0.001) and a 43% risk reduction in 1-year all-cause mortality (adjusted HR 0.57, 95% CI 0.52 to 0.63, p<0.001) in beta-blocked patients. In addition, cancer-specific mortality up to 5 years after surgery was reduced in beta-blocked patients (adjusted HR 0.80, 95% CI 0.73 to 0.88, p<0.001).

conclusionPreoperative beta-blockade is associated with significant reductions in postoperative short-term and long-term mortality following elective colon cancer surgery. Its potential prophylactic effect warrants further interventional studies to determine whether beta-blockade can be used as a way of improving outcomes for this patient group.

Indexed as

Adrenergic beta-AntagonistsAgedAged, 80 and overColectomyColonic NeoplasmsElective Surgical ProceduresFemaleHumansKaplan-Meier EstimateMaleMiddle AgedPreoperative CareProportional Hazards ModelsRegistriesRetrospective StudiesSurvival RateAdrenergic beta-Antagonistsadult surgerycolorectal surgerygastrointestinal tumours

Identifiers

PMID32641361
PMCPMC7342478
OpenAlexW3041133688

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.