Deferral of assessment of pulmonary embolism

Sergio Siragusa, Alessandra Malato, Francesco Falaschi, Fernando Porro, Raffaela Anastasio, Antonino Giarratano, Lucio Lo Coco, Maria Cristina Buonanno, Elena Maggi, Maria Antonietta Bressan, Guglielmo Mariani

Research output: Contribution to journalArticlepeer-review


We evaluated a simplified algorithm for safely postponing diagnostic imaging for pulmonary embolism (PE). At the index visit, patients were identified as being at high or low risk of PE; the former received full dosage low molecular weight heparin while the latter were left untreated until performance of diagnostic imaging (max 72 hours). During this period, no thromboembolic events occurred in low-risk patients (0/211, 0.% [upper 95% CI 0.9%]); only one event occurred in those at high-risk (1/125, 0.8% [upper 95% CI, 1.2]). Our study demonstrates that diagnostic imaging for PE can be safely deferred for up to 3 days.

Original languageEnglish
Pages (from-to)410-413
Number of pages4
Issue number3
Publication statusPublished - Mar 2007


  • D-dimer
  • Deferred tests
  • Low-molecular weight heparin
  • Pretest clinical probability
  • Pulmonary embolism

ASJC Scopus subject areas

  • Hematology


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