Evidence map›Paper›PMID 9616340›Full record

ArticleHeart (British Cardiac Society)1998

Analysis of deaths while waiting for cardiac surgery among 29,293 consecutive patients in Ontario, Canada. The Steering Committee of the Cardiac Care Network of Ontario.

C D Morgan, K Sykora, C D Naylor

Registry-linked trialAbstract readMulticenter Study
In one paragraph

Article in Heart (British Cardiac Society), 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04393636 (Randomized Controlled Trial of Digital Cardiac Counseling in Patients With Delayed Cardiac Surgical Treatment Due to Covid-19 Pandemic), which is not on this map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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.

NCT04393636 nacompletednot on this mapstarted 2020, after this paper: background citation

Randomized Controlled Trial of Digital Cardiac Counseling in Patients With Delayed Cardiac Surgical Treatment Due to Covid-19 Pandemic (DCC Trial)

TypeinterventionalSponsorAcademisch Ziekenhuis MaastrichtRan2020 to 2024Enrolled394ConditionsCardiovascular Diseases, Cardiovascular Risk FactorArmsDigital cardiac Counseling
3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
  2. Article
  3. [COVID-19: retrospective analysis of cardiac surgery capacity in German heart centers].Zeitschrift fur Herz-, Thorax- und Gefasschirurgie · 2022
    Article
  4. Article
  5. Article
  6. Elective cardiac surgery during the COVID-19 pandemic: Proceed or postpone?Best practice & research. Clinical anaesthesiology · 2020
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Should patients with stenosis of the left main coronary artery waiting for bypass grafting be given priority?CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2005
    Article
  18. Article
  19. Article
  20. Flawed analysis, implausible results--move on.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2004
    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

3 authors.

C D MorganDepartment of Medicine, Sunnybrook Health Science Centre, University of Toronto, Ontario, Canada.
K Sykora
C D Naylor

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess death rates among patients waiting for cardiac valve surgery or isolated coronary artery bypass surgery (CABG), and to determine independent risk factors for death while waiting for isolated CABG.

designProspective cohort analysis based on an inclusive registry.

settingNine cardiac surgical units in Ontario, Canada. PATIENTS: 29,293 consecutive patients scheduled for cardiac surgery between October 1991 and June 1995.

main outcome measuresDeath rates while waiting for surgery were determined among patients scheduled for isolated CABG, isolated valve surgery, or combined procedures. Predictors of death among patients with isolated CABG were determined from multivariate analysis.

resultsThere were 141 deaths (0.48%) among 29,293 patients. Adjusting for age, sex, and waiting time, patients waiting for valve surgery had a significantly increased risk of death compared with patients waiting for CABG alone (adjusted odds ratio 1.88, 95% confidence interval (CI) 1.23 to 2.88, p = 0.004). Results were similar for patients waiting for combined valve and CABG procedures compared with those who were waiting for isolated CABG. Independent risk factors for death while waiting for isolated CABG included: impaired left ventricular function (odds ratio 2.47, 95% CI 1.59 to 3.84, p < 0.001); advancing age (for each decade, odds ratio 1.41, 95% CI 1.10 to 1.80, p = 0.007); male sex (odds ratio 1.95, 95% CI 1.00 to 3.81, p = 0.05); and waiting longer than the maximum time recommended in Canadian guidelines for a patient's clinical profile (odds ratio 1.59, 95% CI 1.01 to 2.51, p = 0.044). After scaling waiting time to surgery or death continuously in days, the same predictors emerged.

conclusionsPatients waiting for valve surgery have a higher risk of death than patients waiting for isolated CABG. Guidelines to promote safer and fairer queuing for non-CABG cardiac surgery are needed. Shorter waiting lists, better compliance with existing guidelines, and guideline revisions to upgrade patients with left ventricular dysfunction could generate additional reductions in the already low risk of death for patients waiting for isolated CABG.

Indexed as

Coronary Artery BypassWaiting ListsAgedAge FactorsCoronary DiseaseFemaleHeart Valve DiseasesHumansLogistic ModelsMaleMiddle AgedOntarioProspective StudiesRisk FactorsSex FactorsTime Factors

Identifiers

PMID9616340
PMCPMC1728656

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Registered trials

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