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FACP. Colegio de médicos de Tarragona Nº 4305520 / fgcapriles@gmail.com

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jueves, 11 de mayo de 2017

D-dimer Cutoffs

EM Topics
EM Topics - May 10, 2017
Ref. Kohn MA, Klok FA, van Es N. Acad Emerg Med. 2017 Apr 1. doi: 10.1111/acem.13191. [Epub ahead of print] D-Dimer Interval Likelihood Ratios for Pulmonary Embolism.
"Short Attention Span Summary
Fun with D-dimer
If you have a lower pretest probability for PE (5%), e.g. by Wells' Criteria, you can accept a higher D-dimer cutoff (up to 999 ng/mL) and still consider PE ruled out. If you have a higher pretest probability (15%), you need a lower D-dimer (<500 ng/mL) to consider PE ruled out; "ruled out" meaning < 3% posttest probability, which many consider below the threshold to obtain CTPA..."