Evidence map›Paper›PMID 29169498›Full record

ArticleJACC. Cardiovascular interventions2017

Heterogeneity of Ankle-Brachial Indices in Patients Undergoing Revascularization for Critical Limb Ischemia.

Devraj Sukul, Scott F Grey, Peter K Henke, Hitinder S Gurm, P Michael Grossman

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in JACC. Cardiovascular interventions, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.7field-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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Guideline
  2. Guideline
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Review
  8. Article
  9. Peripheral arterial disease: A small and large vessel problem.American heart journal plus : cardiology research and practice · 2023
    Review
  10. Article
  11. Article
  12. Observational
  13. Review
  14. Article
  15. Observational
  16. Article
  17. Limb Perfusion During Exercise Assessed by Contrast Ultrasound Varies According to Symptom Severity in Patients with Peripheral Artery Disease.Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography · 2019
    Article
  18. Article
  19. Observational
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Devraj SukulDepartment of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan.
Scott F GreyDepartment of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan.
Peter K HenkeDepartment of Surgery, Division of Vascular Surgery, University of Michigan, Ann Arbor, Michigan; VA Ann Arbor Healthcare System, Ann Arbor, Michigan.
Hitinder S GurmDepartment of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan; VA Ann Arbor Healthcare System, Ann Arbor, Michigan.
P Michael GrossmanDepartment of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan; VA Ann Arbor Healthcare System, Ann Arbor, Michigan. Electronic address: pagross@umich.edu.
VA Ann Arbor Healthcare System · USMichigan Medicine · US

Funding

TRAINING IN MOLECULAR AND CELLULAR CARDIOLOGYT32HL007853 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI David J. Pinsky · 1996 to 2026
$11.6M
NHLBI NIH HHS T32 HL007853
6 · The paper itself

Abstract

objectivesThis study sought to describe the distribution of pre-intervention treated-limb ankle-brachial indices (ABIs) among patients with critical limb ischemia (CLI) undergoing percutaneous vascular intervention (PVI) or surgical revascularization (SR).

backgroundCLI is diagnosed by the presence of rest pain, tissue ulceration, or gangrene due to chronic arterial insufficiency. It is unclear what fraction of patients with suspected CLI have severe peripheral artery disease (PAD) on noninvasive functional testing.

methodsThe study included patients who underwent lower extremity revascularization for CLI in a multicenter registry in Michigan from January 2012 through June 2015. ABIs were classified as normal (ABI: 0.91 to 1.40), mild-moderate (ABI: 0.41 to 0.90), and severe (ABI: ≤0.40). Pre- and post-intervention Peripheral Artery Questionnaire summary scores were assessed in a subset of patients.

resultsAmong 10,756 patients with signs or symptoms of CLI, 9,113 (84.7%) underwent PVI and 1,643 (15.3%) underwent SR. ABIs were recorded in 4,972 (54.6%) PVI and 1,012 (61.6%) SR patients. Patients undergoing PVI had higher ABIs than those undergoing SR, with substantial variation in both groups (PVI: 0.72 ± 0.29 vs. SR: 0.61 ± 0.29; p < 0.001). Nearly a quarter of patients with compressible arteries had normal ABIs (24.0%), whereas severe PAD was uncommon (16.5%). A significant improvement in Peripheral Artery Questionnaire scores was noted after intervention across all ABI categories.

conclusionsAmong patients undergoing revascularization for CLI in contemporary practice, the authors found substantial heterogeneity in pre-intervention ABIs. The disconnect between ABI results and clinical diagnosis calls into question the utility of ABIs in this population and suggests the need for standardization of functional PAD testing.

Indexed as

Ankle Brachial IndexAgedAged, 80 and overCritical IllnessFemaleHumansIschemiaLower ExtremityMaleMichiganMiddle AgedPeripheral Arterial DiseasePredictive Value of TestsRegistriesReproducibility of ResultsSeverity of Illness Indexankle-brachial indexcritical limb ischemiapercutaneous vascular interventionperipheral artery diseasesurgical bypass graft

Identifiers

PMID29169498
PMCPMC6800014
OpenAlexW2769067353

What OpenQuestion holds

Textmetadata
LicenceTDM
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.