Tridimensional Rotational Angiography (3D-RA) as a Diagnostic Tool for Patients with Transplant Renal Artery Stenosis Background: Transplant renal artery stenosis (TRAS) is the major vascular complication associated to adverse events in patients with kidney grafts, whose incidence ranges from 1% to 23%. Angiography is the gold-standard for diagnosis, enabling immediate treatment; however, due to the variable anatomy and location of anastomosis, additional projections are often required, leading to greater exposure to contrast medium and radiation. Tridimensional rotational angiography (3D-RA) appears as a tool for diagnosis and treatment of TRAS. The aim of this paper was to evaluate the accuracy of measurements obtained by 3D-RA in comparison to conventional angiography. Methods: From April, 2010 to January, 2011, 41 3D-RAs were performed in patients with clinical suspicion of TRAS. Images were analyzed by independent observers; conventional angiography measurements were obtained online and 3D-RA measurements were obtained offline with the Philips Allure 3D-RA software. Results: Thirty-five 3D-RAs (84%) were considered adequate for angiographic measurements, and 20% provided additional and relevant information for the therapeutic strategy. There was no statistically significant difference between measurements obtained from the reference diameter and minimal luminal diameter of the artery using 3D-RA and conventional angiography. In addition, there was a strong correlation between them. Conclusions: 3D-RA comes up as a useful tool for TRAS

Background: Percutaneous coronary intervention is the most recommended method of myocardial revascularization in acute coronary syndrome patients. The objective of this study was to analyze the clinical profiles and outcomes of patients with non-ST segment elevation acute coronary syndrome undergoing percutaneous coronary intervention. Methods: We retrospectively analyzed 53,889 patients with non-ST segment elevation acute coronary syndrome, who underwent percutaneous coronary intervention between June 2006 and March 2016. A database was used to define the patients' clinical and angiographic characteristics, procedures and clinical outcomes. The patients were grouped into different chronological periods, and variables were analyzed to determine their influence over death outcomes. Results: Factors such as advanced age, female sex, history of infarction or coronary artery bypass surgery, diabetes, multivessel disease, left ventricular dysfunction, and collateral circulation were associated to a higher risk of in-hospital death for these patients. The success rate of the procedures increased along time and the risk of death decreased. Conclusion: Advances in the available medical technology have changed the profile of percutaneous coronary intervention, which has led to a higher rate of procedure success and a lower risk of death and complications.

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