Does a Clinical Decision Rule Using D-Dimer Level Improve the Yield of Pulmonary CT Angiography
American Journal of Roentgenology, 05/03/2011
Hoo GWS et al. – A clinical decision rule of greater than 4 and a higher D–dimer level were better predictors for pulmonary embolism (PE), especially a D–dimer level of greater than 3000 ng/mL. Guidelines combining a clinical decision rule with D–dimer level significantly improved the utilization of pulmonary CT angiography (CTA) and positive yield for PE.