Evidence map›Paper›PMID 20081101›Full record

ArticleChest2010

Early anticoagulation is associated with reduced mortality for acute pulmonary embolism.

Sean B Smith, Jeffrey B Geske, Jennifer M Maguire, Nicholas A Zane, Rickey E Carter, Timothy I Morgenthaler

Abstract read
In one paragraph

Article in Chest, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

101 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. Trial
  3. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2026
    Review
  4. Article
  5. Initial management of intermediate- and high-risk pulmonary embolism.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2026
    Review
  6. Article
  7. Article
  8. The Thromboembolism Heparinization and AntithrombiN Observational Study (THANOS-1).Research and practice in thrombosis and haemostasis · 2026
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review

41 more citing papers are in PubMed but not listed here.

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

6 authors.

Sean B SmithDepartment of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA. tmorgenthaler@mayo.edu
Jeffrey B Geske
Jennifer M Maguire
Nicholas A Zane
Rickey E Carter
Timothy I Morgenthaler

Funding

MAYO CLINIC CENTER FOR TRANSLATIONAL SCIENCE ACTIVITIESUL1RR024150 · NCRR · MAYO CLINIC ROCHESTER · PI RIZZA, ROBERT A. · 2006 to 2011
$66.4M
NCRR NIH HHS 1 UL1 RR024150-01NCRR NIH HHS UL1 RR024150
6 · The paper itself

Abstract

backgroundAcute pulmonary embolism (PE) may be rapidly fatal if not diagnosed and treated. IV heparin reduces mortality and recurrence of PE, but the relationship between survival and timing of anticoagulation has not been extensively studied.

methodsWe studied 400 consecutive patients in the ED diagnosed with acute PE by CT scan angiography and treated in the hospital with IV unfractionated heparin from 2002 to 2005. Patients received heparin either in the ED or after admission. Time from ED arrival to therapeutic activated partial thromboplastin time (aPTT) was calculated. Outcomes included in-hospital and 30-day mortality, hospital and ICU lengths of stay, hemorrhagic events on heparin, and recurrent venous thromboembolism within 90 days.

resultsIn-hospital and 30-day mortality rates were 3.0% and 7.7%, respectively. Patients who received heparin in the ED had lower in-hospital (1.4% vs 6.7%; P = .009) and 30-day (4.4% vs 15.3%; P < .001) mortality rates as compared with patients given heparin after admission. Patients who achieved a therapeutic aPTT within 24 h had lower in-hospital (1.5% vs 5.6%; P = .093) and 30-day (5.6% vs 14.8%; P = .037) mortality rates as compared with patients who achieved a therapeutic aPTT after 24 h. In multiple logistic regression models, receiving heparin in the ED remained predictive of reduced mortality, and ICU admission remained predictive of increased mortality.

conclusionsWe report an association between early anticoagulation and reduced mortality for patients with acute PE. We advocate further study with regard to comorbidities to assess the usefulness of modifications to hospital protocols.

Indexed as

Acute DiseaseAgedAnticoagulantsChi-Square DistributionEmergency Service, HospitalFemaleHeparinHospital MortalityHumansLength of StayLogistic ModelsMalePartial Thromboplastin TimePulmonary EmbolismRecurrenceRetrospective StudiesAnticoagulantsHeparin

Identifiers

PMID20081101
PMCPMC3021363

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.