Evidence map›Paper›PMID 32204693›Full record

Observational studyBMC cardiovascular disorders2020

Patency of conduits in patients who received internal mammary artery, radial artery and saphenous vein grafts.

Alistair Royse, William Pamment, Zulfayandi Pawanis, Sandy Clarke-Errey, David Eccleston, Andrew Ajani, William Wilson, David Canty, Colin Royse

Open access · goldAbstract readComparative StudyObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in BMC cardiovascular disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

6 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
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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

9 authors at 3 institutions in 2 countries.

Alistair RoyseDepartment of Surgery, The University of Melbourne, PO Box 2135 RMH, Melbourne, 3050, Australia. Alistair.Royse@unimelb.edu.au.
William PammentDepartment of Surgery, The University of Melbourne, PO Box 2135 RMH, Melbourne, 3050, Australia.
Zulfayandi PawanisDepartment of Surgery, The University of Melbourne, PO Box 2135 RMH, Melbourne, 3050, Australia.
Sandy Clarke-ErreyStatistical Consulting Centre, The University of Melbourne, 139 Barry St, Parkville, 3010, Australia.
David EcclestonDepartment of Medicine and Cardiology, Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia.
Andrew AjaniDepartment of Medicine and Cardiology, Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia.
William WilsonDepartment of Medicine and Cardiology, Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia.
David CantyDepartment of Surgery, The University of Melbourne, PO Box 2135 RMH, Melbourne, 3050, Australia.
Colin RoyseDepartment of Surgery, The University of Melbourne, PO Box 2135 RMH, Melbourne, 3050, Australia.
University of Melbourne · AUThe Royal Melbourne Hospital · AUAirlangga University · ID

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhere each patient has all three conduits of internal mammary artery (IMA), saphenous vein graft (SVG) and radial artery (RA), most confounders affecting comparison between conduits can be mitigated. Additionally, since SVG progressively fails over time, restricting patient angiography to the late period only can mitigate against early SVG patency that may have occluded in the late period.

methodsResearch protocol driven conventional angiography was performed for patients with at least one of each conduit of IMA, RA and SVG and a minimum of 7 years postoperative. The primary analysis was perfect patency and secondary analysis was overall patency including angiographic evidence of conduit lumen irregularity from conduit atheroma. Multivariable generalized linear mixed model (GLMM) was used. Patency excluded occluded or "string sign" conduits. Perfect patency was present in patent grafts if there was no lumen irregularity.

resultsFifty patients underwent coronary angiography at overall duration postoperative 13.1 ± 2.9, and age 74.3 ± 7.0 years. Of 196 anastomoses, IMA 62, RA 77 and SVG 57. Most IMA were to the left anterior descending territory and most RA and SVG were to the circumflex and right coronary territories. Perfect patency RA 92.2% was not different to IMA 96.8%, P = 0.309; and both were significantly better than SVG 17.5%, P < 0.001. Patency RA 93.5% was also not different to IMA 96.8%, P = 0.169, and both arterial conduits were significantly higher than SVG 82.5%, P = 0.029. Grafting according to coronary territory was not significant for perfect patency, P = 0.997 and patency P = 0.289. Coronary stenosis predicted perfect patency for RA only, P = 0.030 and for patency, RA, P = 0.007, and SVG, P = 0.032. When both arterial conduits were combined, perfect patency, P < 0.001, and patency, P = 0.017, were superior to SVG.

conclusionsAll but one patent internal mammary artery or radial artery grafts had perfect patency and had superior perfect patency and overall patency compared to saphenous vein grafts.

Indexed as

Coronary Artery BypassVascular PatencyAgedAged, 80 and overCoronary AngiographyCoronary Artery DiseaseFemaleGraft Occlusion, VascularHumansMaleMammary ArteriesMiddle AgedProspective StudiesRadial ArteryRisk FactorsSaphenous VeinArterialInternal mammary artery(Max 10) patencyRadial arterySaphenous vein

Identifiers

PMID32204693
PMCPMC7092416
OpenAlexW3012890049

What OpenQuestion holds

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Registered trials

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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.