Unstable Angina clinical trials at UCSD

This prospective, non-interventional, single arm, longitudinal cohort multicenter study will recruit approximately 5600 consecutive all-comers, consisting of patients with signs and symptoms of acute coronary syndromes (ACS) who present in the emergency department (ED). The main objective of the study is to determine the clinical performance of Elecsys Troponin T hs Gen 6 versus the centrally adjudicated clinical diagnosis at various time points after ED presentation using the previously determined clinical cut-off of a universal 99th percentile upper reference limit.

This retrospective study will evaluate the coronary angiograms of approximately 100 patients who have undergone invasive angiography and fractional flow reserve (FFR). DICOM files of the angiograms will be analyzed on a secure computer within the cardiac catheterization laboratory using the AutocathFFR software to assess if invasive FFR measurements and automated computer analysis of FFR measurements correlate. AutocathFFR measurement per lesion will be compared to the gold standard, invasive FFR value, where an FFR ≤ 0.80 will be considered "positive", while an FFR > 0.8 will be considered "negative". The AutocathFFR value will be compared to the invasive FFR measurements. The sensitivity and specificity of the AutocathFFR will be calculated, as well as the AutocathFFR accuracy, positive predictive value and negative predictive value per lesion. Device success will be calculated as the ratio of completed versus initiated AutocathFFR index calculations. Usability of the AutocathFFR software will be evaluated using dedicated questionnaires to be completed by the user (cardiologists).