Decision rules in the diagnostic work-up of aortic dissection

A short cut review of the literature was carried out to examine whether a decision rule in conjunction with a D-dimer can be used to rule out aortic dissection. 117 unique papers were found of which three systematic reviews included data on patients relevant to the clinical question; these are discussed in the paper. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of the best papers are tabulated. The clinical bottom line is that in low-risk patients (aortic dissection detection risk score 0 or 1) who present to the Emergency Department with chest pain, a negative D-dimer level makes aortic dissection unlikely. However, further prospective validation studies are needed to optimally define the patient group that warrants investigation, the threshold for investigation and the clinical effectiveness of such a diagnostic strategy before it can be widely adopted.