Discourse communities require a network of communication where the members of it can be any amount of distance apart as long as they operate with the same language, but speech communities require proximity to convey the culture of their language.
Pragmatic classification of the causes of high D-dimer. Abstract. Venous thromboembolism (VTE) remains the most. common preventable cause of in-hospital death and D-dimer. (DD) is one of the essential diagnostic tools for it. Each risk. factor for VTE can raise DD and they are numerous: 24 listed in 2008 European Guidelines.
Elevated D-dimer, although not specific for AAD is a highly sensitive marker of the condition. D-dimer has high negative predictive value and likely rules out AAD. High index of suspicion should be maintained for the patients with chest pain in ED and D-dimer should be used as screening test to rule out AAD.