Pulmonary perfusion imaging combined with Wells score and D-dimer assay for the diagnosis of acute pulmonary embolism / 中华核医学杂志
Chinese Journal of Nuclear Medicine
; (6): 42-45, 2011.
Article
em Zh
| WPRIM
| ID: wpr-642466
Biblioteca responsável:
WPRO
ABSTRACT
Objective To investigate the value of the Wells score and D-dimer assay in assisting pulmonary perfusion imaging (PPI) for the diagnosis of acute pulmonary embolism (APE). Methods One hundred twenty-one patients with suspected APE were studied from January, 2006 to December, 2008. All patients underwent the Wells score, the quantitative D-dimer assay, chest X-ray photography, and PPI. The diagnostic sensitivity, specificity, positive predictive value and negative predictive value of PPI with the assistance of Wells score and D-dimer assay were calculated. Results Fifty (41.3%) patients were diagnosed with APE. PPI combined with chest X-ray photography (Q/X scan) showed positive results in 49 patients. The sensitivity, specificity, positive predictive value and negative predictive value of the Q/X scan were 86.0% (43/50), 91.5% (65/71), 87.8% (43/49) and 90.3% (65/72), respectively. With assistance of Wells score >4 and D-dimer≥0. 5 mg/L, Q/X scan had a positive predictive value of 100.0% (29/29), for patients with Wells score ≤4 and D-dimer<0.5 mg/L, the negative predictive value for Q/X scan was 100.0% (41/41). Conclusion Combined with Wells score and D-dimer assay, PPI can make accurate diagnosis of APE.
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Índice:
WPRIM
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Idioma:
Zh
Revista:
Chinese Journal of Nuclear Medicine
Ano de publicação:
2011
Tipo de documento:
Article