Benefit of adaptive FEC in shared backup path protected elastic optical network.

We apply an adaptive forward error correction (FEC) allocation strategy to an Elastic Optical Network (EON) operated with shared backup path protection (SBPP). To maximize the protected network capacity that can be carried, an Integer Linear Programing (ILP) model and a spectrum window plane (SWP)-based heuristic algorithm are developed. Simulation results show that the FEC coding overhead required by the adaptive FEC scheme is significantly lower than that needed by a fixed FEC allocation strategy resulting in higher network capacity for the adaptive strategy.

Precision and accuracy of risk scores for in-hospital death after percutaneous coronary intervention in the current era.

Background: Various risk assessment scores were proposed in the last decade for prediction of in-hospital mortality in patients undergoing percutaneous coronary intervention (PCI). We sought to apply two validated scores, the Mayo Clinic Risk Score (MCRS) and the New York Risk Score (NYRS) to a contemporary cohort treated at a single institution and to simplify the NYRS, such that the parameters used in both scores are similar.

Methods And Results: Patients undergoing PCI in 2005-2007 were included.

Three-year survival after percutaneous coronary intervention according to appropriateness criteria for revascularization.

Objectives: We sought to compare 3-year outcomes of percutaneous coronary intervention (PCI) according to recently published appropriateness criteria for PCI.

Background: The choice of revascularization between PCI and coronary artery bypass grafting (CABG) remains uncertain in many patients despite numerous randomized clinical trials and meta-analyses.

Methods: Consecutive patients undergoing a first PCI at a single, large-volume institution were included if they did not have prior CABG and did not need emergency PCI.