Evidence map›Paper›PMID 24953899›Full record

ArticleJournal of vascular surgery2014

Outcomes of carotid endarterectomy versus stenting in comparable medical risk patients.

Emily L Spangler, Philip P Goodney, Andres Schanzer, David H Stone, Marc L Schermerhorn, Richard J Powell, Jack L Cronenwett, Brian W Nolan, Vascular Study Group of New England

Open access · greenAbstract readComparative StudyMulticenter Study
In one paragraph

Article in Journal of vascular surgery, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

4 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
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.

Emily L SpanglerSection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH. Electronic address: spangler@alum.mit.edu.
Philip P GoodneySection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH.
Andres SchanzerDivision of Vascular and Endovascular Surgery, University of Massachusetts-Memorial Medical Center, Worcester, Mass.
David H StoneSection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH.
Marc L SchermerhornDepartment of Vascular and Endovascular Surgery, Beth-Israel Deaconess Medical Center, Boston, Mass.
Richard J PowellSection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH.
Jack L CronenwettSection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH.
Brian W NolanSection of Vascular Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH.
Vascular Study Group of New England
Dartmouth–Hitchcock Medical Center · USHadassah Medical Center · ILMemorial Medical Center · US

Funding

Understanding Variation in Treatment Intensity with Lower Extremity PADK08HL105676 · NHLBI · DARTMOUTH COLLEGE · PI GOODNEY, PHILIP P · 2010 to 2014
$700k
Leveraging Health IT to Avoid Unnecessary Asymptomatic Carotid RevascularizationR21HS021581 · AHRQ · DARTMOUTH COLLEGE · PI GOODNEY, PHILIP P · 2013 to 2014
$296k
AHRQ HHS R21 HS021581NHLBI NIH HHS K08 HL105676
6 · The paper itself

Abstract

objectiveIn medically high-risk patients the choice between carotid artery stenting (CAS) and carotid endarterectomy (CEA) can be difficult. The purpose of this study was to compare risk-stratified outcomes of CAS and CEA.

methodsPatients who underwent isolated primary CEA (n = 11,336) or primary CAS (n = 544) at 29 centers in the Vascular Study Group of New England were analyzed (2003-2013); patients with previous ipsilateral CEA or CAS, or concomitant coronary artery bypass graft were excluded. A medical risk score based on predicted 5-year mortality was developed for each patient using a Cox proportional hazards model. Patients in the highest risk score quartile were termed high-risk (vs normal-risk for the other three quartiles). Medically high-risk patients had a 5-year survival of 65% and comprised 23% of CEA and 25% of CAS patients. Risk-stratified outcomes were compared within neurologically symptomatic and asymptomatic patients.

resultsAmong asymptomatic patients, rates of in-hospital stroke and/or death were not different between CAS and CEA in normal and high-risk cohorts, ranging from 0.7% in normal-risk CEA patients to 1.6% in high-risk CAS patients. In symptomatic patients, significantly worse outcomes were seen with CAS compared with CEA in normal-risk and high-risk patients. Normal-risk symptomatic patients had a stroke or death rate of 1.3% with CEA, but 5.2% with CAS (P < .01). In high-risk symptomatic patients, the stroke or death rate was 1.5% with CEA and 9.3% with CAS (P < .01). No significant differences were seen between asymptomatic CEA and CAS within risk strata across secondary outcome measures of stroke, death, or myocardial infarction, and ipsilateral stroke, major stroke, or death. However, symptomatic high-risk CAS patients had significantly greater rates of all secondary outcomes compared with CEA except death, and symptomatic normal-risk CAS patients had only significantly greater rates of death and stroke, death, or myocardial infarction.

conclusionsIn the Vascular Study Group of New England, asymptomatic normal- and high-risk patients do equally well after CEA or CAS. However, normal- and high-risk symptomatic patients have substantially worse outcomes with CAS compared with CEA. High medical risk alone might be an insufficient indication for CAS in symptomatic patients.

Indexed as

Endarterectomy, CarotidStentsAngioplastyAsymptomatic DiseasesCarotid Artery DiseasesHospital MortalityHumansMyocardial InfarctionNew EnglandProportional Hazards ModelsRegistriesRetrospective StudiesRisk AssessmentRisk FactorsStrokeTime Factors

Identifiers

PMID24953899
PMCPMC5292270
OpenAlexW2145492790

What OpenQuestion holds

Textmetadata
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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.