D-dimer in ruling out acute aortic dissection: A systematic review and prospective cohort study

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Abstract

Aims: Blood D-dimer testing has been proposed as diagnostic marker with high sensitivity for exclusion of acute aortic dissection (AAD). We performed a systematic review and validated the findings in a prospective patient cohort. Methods and results: We searched MEDLINE, EMBASE, CINAHL, and BIOSIS from inception until January 2007 using a combination of search terms for aortic dissection and D-dimer. Study type, type of assay used, predefined cut-off level, result of D-dimer testing, sensitivity, and specificity were abstracted. In 16 identified studies (437 patients), the reported cut-off values ranged from 0.1 to 0.9 μg/mL. D-dimer testing provided high sensitivity (0.97 95% CI 0.94-0.98) and negative likelihood ratio (0.06 95% CI 0.02-0.13). In our cohort of 65 patients (36 male, 55%; median age 59 years, IQR 49-67) with proven AAD, D-dimer levels scattered from 0.24 to 137.88 μg/mL (median 3.47; IQR 1.55-14.49). Mean NPV for the different cut-off levels ranged from 92 % for a cut-off level of 0.9 μg/mL to 100% for a cut-off level of 0.1 μg/mL in our study population. Conclusion: Current evidence supports a routine measurement of D-dimer in excluding AAD. A D-dimer <0.1 μg/mL will exclude AAD in all cases. © The Author 2007.

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Sodeck, G., Domanovits, H., Schillinger, M., Ehrlich, M. P., Endler, G., Herkner, H., & Laggner, A. (2007). D-dimer in ruling out acute aortic dissection: A systematic review and prospective cohort study. European Heart Journal, 28(24), 3067–3075. https://doi.org/10.1093/eurheartj/ehm484

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