Evidence map›Paper›PMID 31236894›Full record

ArticleJournal of general internal medicine2019

Aspirin Compared with Anticoagulation to Prevent Venous Thromboembolism After Knee or Hip Arthroplasty: a Large Retrospective Cohort Study.

Christine Baumgartner, Judith Maselli, Andrew D Auerbach, Margaret C Fang

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of general internal medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
1.3field-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

9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Effectiveness and Safety of Aspirin Versus Other Antithrombotics for VTE After Total Hip and Knee Arthroplasty in Real-World Setting.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  3. Article
  4. Article
  5. Article
  6. Venous thromboembolism in orthopedic surgery: Global guidelines.Acta orthopaedica et traumatologica turcica · 2023
    Review
  7. Aspirin thromboprophylaxis in joint replacement surgery.Research and practice in thrombosis and haemostasis · 2022
    Article
  8. Aspirin for Postoperative Venous Thromboembolism Prophylaxis.Journal of general internal medicine · 2020
    Article
  9. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Christine BaumgartnerDivision of Hospital Medicine, University of California, San Francisco, San Francisco, CA, USA. christine.baumgartner@insel.ch.
Judith MaselliDepartment of Medicine, University of California, San Francisco, San Francisco, CA, USA.
Andrew D AuerbachDivision of Hospital Medicine, University of California, San Francisco, San Francisco, CA, USA.
Margaret C FangDivision of Hospital Medicine, University of California, San Francisco, San Francisco, CA, USA.
San Francisco General Hospital · USUniversity of California, San Francisco · US

Funding

Anticoagulation Treatment and Long-Term Outcomes After Venous ThromboembolismR01HL103820 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI FANG, MARGARET C. · 2010 to 2014
$3.6M
Use and outcomes of anticoagulants for the treatment and prevention of thrombosis among hospitalized patientsK24HL141354 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI FANG, MARGARET C. · 2018 to 2022
$731k
NHLBI NIH HHS K24 HL141354NHLBI NIH HHS R01 HL103820
6 · The paper itself

Abstract

backgroundAlthough guidelines now allow the use of aspirin as an alternative to anticoagulants for venous thromboembolism prophylaxis after knee or hip arthroplasty, there is limited data on contemporary use and outcomes with aspirin.

objectiveTo describe the use of pharmacologic thromboprophylaxis and to assess venous thromboembolic risk with aspirin compared with anticoagulation after knee or hip arthroplasty.

designRetrospective cohort study using data from the US MedAssets database. PATIENTS: Adults with a principal discharge diagnosis of knee or hip arthroplasty between January 1, 2013, and December 31, 2014. MAIN MEASURES: We identified charges for medications used for thromboprophylaxis within 7 days after the index surgery from billing records. The primary outcome was postoperative venous thromboembolism identified by International Classification of Diseases, 9th edition codes, from the index hospitalization, rehospitalization within 30 days, or during an outpatient visit within 90 days postoperatively. We compared postoperative thromboembolic risk in patients receiving aspirin-only and those receiving anticoagulants using propensity score-adjusted multivariable logistic regression models. KEY

resultsWe identified 74,234 patients with knee arthroplasty and 36,192 with hip arthroplasty who received pharmacologic thromboprophylaxis. Aspirin-only was used in 27.9% of all patients, while 24.2% and 24.1% received warfarin or enoxaparin as prophylactic monotherapy, respectively. Postoperative venous thromboembolism occurred in 495 (0.67%) patients undergoing knee arthroplasty and 145 (0.40%) undergoing hip arthroplasty. Aspirin-only was not related to increased odds of postoperative venous thromboembolism compared with anticoagulants in multivariable adjusted analyses (odds ratio [OR] 0.70; 95% confidence interval [CI], 0.56-0.87, and OR 0.93; 95% CI, 0.62-1.38 for knee or hip arthroplasty, respectively).

conclusionsMore than a fourth of all patients received aspirin as the sole antithrombotic agent after knee or hip arthroplasty. Postoperative thromboprophylaxis with aspirin-only was not associated with a higher risk of postoperative venous thromboembolism compared with anticoagulants after hip or knee arthroplasty.

Indexed as

AdultAgedAged, 80 and overAnticoagulantsArthroplasty, Replacement, HipArthroplasty, Replacement, KneeAspirinDatabases, FactualFemaleHumansMaleMiddle AgedPlatelet Aggregation InhibitorsPostoperative ComplicationsRetrospective StudiesVenous ThromboembolismAnticoagulantsAspirinPlatelet Aggregation Inhibitorsanticoagulationarthroplastyaspirinvenous thromboembolism

Identifiers

PMID31236894
PMCPMC6816584
OpenAlexW2949807479

What OpenQuestion holds

Textmetadata
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.