VIDAS D-dimer in combination with clinical pre-test probability to rule out pulmonary embolism. A systematic review of management outcome studies

Thromb Haemost. 2009 May;101(5):886-92.

Abstract

Clinical outcome studies have shown that it is safe to withhold anticoagulant therapy in patients with suspected pulmonary embolism (PE) who have a negative D-dimer result and a low pretest probability (PTP) either using a PTP model or clinical gestalt. It was the objective of the present study to assess the safety of the combination of a negative VIDAS D-dimer result in combination with a non-high PTP using the Wells or Geneva models to exclude PE. A systematic literature search strategy was conducted using MEDLINE, EMBASE, the Cochrane Register of Controlled Trials and all EBM Reviews. Seven studies (6 prospective management studies and 1 randomised controlled trial) reporting failure rates at three months were included in the analysis. Non-high PTP was defined as "unlikely" using the Wells' model, or "low/intermediate" PTP using either the Geneva score, the Revised Geneva Score, or clinical gestalt. Two reviewers independently extracted data onto standardised forms. A total of 5,622 patients with low/intermediate or unlikely PTP were assessed using the VIDAS D-dimer. PE was ruled out by a negative D-dimer test in 2,248 (40%, 95% confidence intervals [CI] 38.7 to 41.3%) of them. The three-month thromboembolic risk in patients left untreated on the basis of a low/intermediate or unlikely PTP and a negative D-dimer test was 3/2,166 (0.14%, 95% CI 0.05 to 0.41%). In conclusion, the combination of a negative VIDAS D-dimer result and a non-high PTP effectively and safely excludes PE in an important proportion of outpatients with suspected PE.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't
  • Review
  • Systematic Review

MeSH terms

  • Aged
  • Aged, 80 and over
  • Anticoagulants / therapeutic use
  • Biomarkers / blood
  • Diagnosis, Differential
  • Female
  • Fibrin Fibrinogen Degradation Products / analysis*
  • Gestalt Theory
  • Health Status Indicators*
  • Humans
  • Male
  • Predictive Value of Tests
  • Pulmonary Embolism / blood*
  • Pulmonary Embolism / diagnosis*
  • Pulmonary Embolism / drug therapy
  • Pulmonary Embolism / etiology
  • Risk Assessment
  • Risk Factors
  • Sensitivity and Specificity

Substances

  • Anticoagulants
  • Biomarkers
  • Fibrin Fibrinogen Degradation Products
  • fibrin fragment D