Evidence map›Paper›PMID 33651481›Full record

SynthesisJournal of thrombosis and haemostasis : JTH2021

Pediatric May-Thurner Syndrome-Systematic review and individual patient data meta-analysis.

Laura Avila, Noelle Cullinan, Michael White, Marian Gaballah, Anne Marie Cahill, Deepti Warad, Vilmarie Rodriguez, Cristina Tarango, Anna Hoppmann, Stephen Nelson and 9 more

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of thrombosis and haemostasis : JTH, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 9% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. 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

19 authors at 10 institutions in 4 countries.

Laura AvilaThe Hospital for Sick Children, Toronto, Ontario, Canada.ORCID 0000-0002-4340-9645
Noelle CullinanThe Hospital for Sick Children, Toronto, Ontario, Canada.
Michael WhiteChildren's Healthcare of Atlanta, Emory University, Atlanta, Georgia, USA.
Marian GaballahThe Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
Anne Marie CahillThe Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
Deepti WaradMayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0002-1899-5208
Vilmarie RodriguezMayo Clinic, Rochester, Minnesota, USA.
Cristina TarangoDepartment of Pediatrics, Cincinnati Children's Hospital Medical Centre, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
Anna HoppmannChildren's of Alabama, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Stephen NelsonChildren's Hospitals and Clinics of Minnesota, Minneapolis, Minnesota, USA.
Tomas KuhnUniversity Hospital Ostrava and Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic.
Tina BissNewcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK.
Aaron WeissMaine Medical Center, Portland, Maine, USA.
Michael TempleThe Hospital for Sick Children, Toronto, Ontario, Canada.
João G AmaralThe Hospital for Sick Children, Toronto, Ontario, Canada.
Nour AmiriThe Hospital for Sick Children, Toronto, Ontario, Canada.ORCID 0000-0001-6014-6157
Ana C XavierChildren's of Alabama, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Samuele RenziThe Hospital for Sick Children, Toronto, Ontario, Canada.
Leonardo R BrandãoThe Hospital for Sick Children, Toronto, Ontario, Canada.ORCID 0000-0001-7711-4530
Hospital for Sick Children · CAChildren's Hospital of Philadelphia · USChildren's of Alabama · USMayo Clinic · USChildren's Minnesota · USCincinnati Children's Hospital Medical Center · USEmory University · USMaine Medical Center · USNewcastle upon Tyne Hospitals NHS Foundation Trust · GBUniversity of Ostrava · CZ

Funding

UAB Cancer Prevention and Control Training Program (T32)T32CA047888 · NCI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Ritu Aneja, Ellen Mary Lavoie Smith · 2018 to 2026
$3.2M
NCI NIH HHS T32 CA047888
6 · The paper itself

Abstract

backgroundThe outcomes of deep vein thrombosis (DVT) in children with May-Thurner Syndrome (MTS) remain unclear.

objectivesThis systematic review and patient-level meta-analysis aims to describe the outcomes of children with MTS presenting with DVT.

methodsA systematic review of the published literature was performed. Data related to patients <18 years diagnosed with MTS and DVT was extracted. Risk of bias was assessed using the Murad criteria. Outcomes included vessel patency post-treatment, DVT recurrence, and post-thrombotic syndrome (PTS). Predictive and explanatory models were developed for these outcomes.

resultsIn total, 109 cases were identified (age range 4-17 years; 77 females) in 28 studies; 75% of patients had ≥1 additional risk factor for DVT. PTS was seen in 61% of patients, DVT recurrence in 38%, and complete vessel patency post-treatment in 65%. The models developed to predict and explain PTS performed poorly overall. Recurrent thrombosis (adjusted for age and patency) predicted PTS (odds ratio [OR] 3.36, 95% confidence interval [CI] 1.28-8.82). DVT management strategies (adjusted for age and DVT characteristics) predicted vessel patency (OR 2.10, 95% CI 1.43-3.08). Lack of complete vessel patency (adjusted for age and thrombophilia) predicted recurrent DVT (OR 2.70, 95% CI 1.09-6.67). Sensitivity analyses showed the same direction of effects for all outcomes.

conclusionsPTS and DVT recurrence occur frequently in pediatric MTS. PTS prediction is complex and it was not possible to identify early predictors to guide clinical practice. Use of imaging-guided therapy and thrombus burden predicted venous patency, and lack of patency predicted DVT recurrence.

Indexed as

May-Thurner SyndromePostthrombotic SyndromeVenous ThrombosisAdolescentChildChild, PreschoolFemaleHumansIliac VeinTreatment OutcomeVascular Patencyanticoagulantsiliac vein compressioniliac vein lesionpost-phlebitic syndromepost-thrombotic syndrome

Identifiers

PMID33651481
PMCPMC8126469
OpenAlexW3133799376

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.