1,721,059 research outputs found
Percutaneous coronary intervention for unprotected left main distal bifurcation lesions in elderly people
No full textBackground: In the elderly people with unprotected left main distal bifurcation lesions (ULMD), percutaneous coronary intervention (PCI) is often selected as first choice treatment strategy because of perioperative high risk of coronary artery bypass graft surgery due to their large number of comorbidities. Also, some recent papers reported that geriatric nutritional risk index (GNRI) is also strongly associated with clinical outcomes after interventional procedures in elderly patients. Objectives: We assessed clinical outcomes after PCI for ULMD and the impact of GNRI in elderly patients. Methods: We identified 669 non dialysis patients treated with current generation drug-eluting stent for ULMD from MITO registry. We divided the patients to the following 2 groups; elderly group (n = 240, age ≥75) and young group (n = 429, age <75). Additionally, we could calculate GNRI and divided elderly group into 2 group based on the median value of the GNRI. The primary endpoint was all-cause mortality. Results: All-cause mortality was significantly higher in elderly group [adjusted hazard ratio (HR) 2.37; 95% confidence interval (CI), 1.40–4.02; p = 0.001]. All-cause mortality was significantly higher in low GNRI elderly group compared to other 2 groups (Adjusted HR of elderly with low GNRI: 3.56, 95%CI (1.77–7.14), p < 0.001). Cardiovascular mortality was comparable between two groups. TLR rate was significantly lower in elderly group (adjusted HR 0.57; 95% CI, 0.34–0.97; p = 0.035). Conclusions: The elderly had higher all-cause mortality after PCI for ULMD compared to young people. Especially, the elderly with low GNRI were extremely associated with poorer outcomes
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Short-term outcomes following "full-plastic jacket" everolimus-eluting bioresorbable scaffold implantation
No full text
Clinical Outcomes After Implantation of Overlapping Bioresorbable Scaffolds vs New Generation Everolimus Eluting Stents [Resultados clínicos tras el implante de armazones bioabsorbibles solapados en comparación con stents liberadores de everolimus de nueva generación]
No full textIntroduction and objectives
There is limited evidence on procedural and clinical outcomes in patients treated with overlapping bioresorbable scaffolds vs overlapping everolimus-eluting stents. We evaluated the outcomes of propensity-matched patients treated with overlapping scaffolds vs everolimus-eluting stents.
Methods
After propensity matching, 70 consecutive stable angina patients treated with overlapping bioresorbable scaffolds and 70 patients treated with overlapping new generation everolimus stents were included in this study. The primary outcome was the 1-year rate of major adverse cardiovascular events, defined as the composite of all-cause mortality, nonprocedural myocardial infarction, and target-vessel revascularization.
Results
Patients in the 2 groups had similar age (scaffold vs stent: 64.5 ± 10.3 vs 66 ± 9.7 years; P = .381), sex, diabetes, previous cardiovascular history, and SYNTAX score (scaffold vs stent: 18.6 ± 9.2 vs 19.4 ± 10.4; P = .635). Postprocedural acute gain was significantly lower in patients treated with scaffolds (1.82 ± 0.66 vs 2.03 ± 0.68 mm; P = .033). At 1-year follow up, the estimated major adverse cardiovascular event rate was not significantly different between the 2 groups (scaffold vs stent: 14.5% vs 14.6%; Plog-rank = .661). Similarly, no significant differences were seen in 1-year rates of target vessel (scaffold vs stent: 14.5% vs 10%; Plog-rank = .816) or target lesion revascularization (scaffold vs stent: 9.7% vs 8.3%; Plog-rank = .815).
Conclusions
Treating long lesions with overlapping scaffolds is feasible with acceptable 1-year outcomes
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