Evidence map›Paper›PMID 9451260›Full record

ArticleBMJ (Clinical research ed.)1998

Compression ultrasonography for diagnostic management of patients with clinically suspected deep vein thrombosis: prospective cohort study.

A Cogo, A W Lensing, M M Koopman, F Piovella, S Siragusa, P S Wells, S Villalta, H R Büller, A G Turpie, P Prandoni

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in BMJ (Clinical research ed.), 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
20.3field-weighted citation impact, top 1% 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

51 citing papers in PubMed, 1 synthesis or guideline pooled it, 403 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Trial
  9. Trial
  10. Preoperative prevalence and risk factors for thromboembolic events following tibial plateau fractures: a retrospective analysis of an underestimated risk.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Observational
  16. Joint Guideline on Venous Thromboembolism - 2022.Arquivos brasileiros de cardiologia · 2022
    Article
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 3 countries.

A CogoIstituto di Semeiotica Medica, University of Padua, Italy.
A W Lensing
M M Koopman
F Piovella
S Siragusa
P S Wells
S Villalta
H R Büller
A G Turpie
P Prandoni
University of Amsterdam · NLHamilton General Hospital · CAPoliclinico San Matteo Fondazione · ITUniversity of Padua · ITAcademic Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the safety of withholding anticoagulant treatment from patients with clinically suspected deep vein thrombosis but normal findings on compression ultrasonography.

designCompression ultrasonography was done with a simplified diagnostic procedure limited to the common femoral vein in the groin and the popliteal vein extending down to the trifurcation of the calf veins. Patients with normal ultrasonography findings at presentation were retested 1 week later.

main outcome measureThe incidence of venous thromboembolic complications during follow up for 6 months in patients in whom anticoagulant treatment was withheld on the basis of normal results on two ultrasonography tests 1 week apart.

settingUniversity research centres in four hospitals.

resultsA total of 1702 patients were included in the study. Abnormal results on compression ultrasonography at presentation or at 1 week were found in 400 and 12 patients, respectively, for a prevalence of deep vein thrombosis of 24%. None of the patients were lost to follow up. Venous thromboembolic complications during the week of serial testing occurred in a single patient and in eight patients during 6 months' follow up, resulting in a cumulative rate of venous thromboembolic complications of 0.7% (95% confidence interval 0.3% to 1.2%). The mean number of extra hospital visits and additional tests required per initially referred patient was 0.8.

conclusionIt is safe to withhold anticoagulant treatment from patients with clinically suspected deep vein thrombosis who have a normal result on compression ultrasonography at the time of presentation and at 1 week.

Indexed as

AdolescentAdultAgedAged, 80 and overCohort StudiesFemoral VeinFollow-Up StudiesHumansMiddle AgedPopliteal VeinProspective StudiesThrombosisUltrasonography

Identifiers

PMID9451260
PMCPMC2665362
OpenAlexW1995865724

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.