1,721,022 research outputs found
Multiparametric prognostic score for patients undergoing dipyridamole stress echocardiography
No full textExercise-recovery heart rate-adjusted ST-segment analysis predicts mortality in hypertensive patients
No full textA rare case of myocarditis and pulmonary embolism after BNT162b2 mRNA vaccine
No full textIn the clinical research arsenal, the COVID-19 vaccines are the strongest weapons against the most important worldwide sanitary crisis of the last centuries. Even if vaccine adverse events have mild clinical relevance, several thromboembolic events occurring after adenoviral recombinant vaccine administration have been reported. Cases of myocarditis and pericarditis after administration of mRNA vaccines have also recently been described. We report the case of a patient who suffered from two rare adverse events after BNT162b2 mRNA vaccine administration (Pfizer-BioNTech): acute myocarditis and pulmonary embolism. Although the temporal consequentiality does not demonstrate a causal link, the strong analogies emerging in the latest clinical reports suggest a possible relation. Further studies are needed to understand the potential mechanisms of myocardial damage and atypical thrombosis. Despite the favorable and self-limiting clinical course of post-vaccinal myocarditis, in these cases a tight follow-up is advisable and vaccine adverse event reporting remains mandatory, especially if not described during pivotal clinical trials
A rare case of myocarditis and pulmonary embolism after BNT162b2 mRNA vaccine administration
No full textIn the clinical research arsenal, the COVID-19 vaccines are the strongest weapons against the most important worldwide sanitary crisis of the last centuries. Even if vaccine adverse events have mild clinical relevance, several thromboembolic events occurring after adenoviral recombinant vaccine administration have been reported. Cases of myocarditis and pericarditis after administration of mRNA vaccines have also recently been described. We report the case of a patient who suffered from two rare adverse events after BNT162b2 mRNA vaccine administration (Pfizer-BioNTech): acute myocarditis and pulmonary embolism. Although the temporal consequentiality does not demonstrate a causal link, the strong analogies emerging in the latest clinical reports suggest a possible relation. Further studies are needed to understand the potential mechanisms of myocardial damage and atypical thrombosis. Despite the favorable and self-limiting clinical course of post-vaccinal myocarditis, in these cases a tight follow-up is advisable and vaccine adverse event reporting remains mandatory, especially if not described during pivotal clinical trials
Prognostic value of a multiparametric risk score in patients undergoing dipyridamole stress echocardiography
No full textTo set up a prognostic score including clinical data and stress echocardiographic findings, the data of 3,969 patients who underwent dipyridamole stress were analyzed. Age (hazard ratio [HR] 3.21), peak wall motion score index (HR 2.62), diabetes mellitus (HR 2.36), and male gender (HR 1.69) were independent predictors of mortality and were incorporated into a prognostic score allowing us to estimate 1-, 3-, and 5-year survival in the patient cohort. The multiparametric risk score, immediately available at the bedside, can be used to predict the survival of patients undergoing dipyridamole stress echocardiography
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
Comparison of the prognostic value of the stress-recovery index versus standard electrocardiographic criteria in patients with a negative exercise electrocardiogram
No full textTo verify whether the stress recovery index (SRI) improves risk stratification in patients with a negative exercise electrocardiogram (ECG) using standard criteria, the SRI was derived in 708 consecutive patients with a negative exercise ECG. All-cause mortality and the combination of death or nonfatal myocardial infarction were target end points. The individual effect of clinical and exercise testing data on outcome was evaluated using Cox regression analysis with separate models for each group of variables. Model validation was performed using bootstrap adjusted by degree of optimism in estimates. Survival analysis was performed using a product-limit Kaplan-Meier method. During a 37-month follow-up, 22 deaths and 40 nonfatal acute coronary syndromes occurred. After adjusting for confounding variables, age (hazard ratio 1.62, 95% confidence interval [CI] 1.14 to 2.31 for interquartile difference), hypertension (hazard ratio 1.74, 95% CI 1.04 to 2.89), and SRI (hazard ratio 0.75, 95% CI 0.65 to 0.86 for interquartile difference) were predictive of death or nonfatal myocardial infarction. Moreover, SRI increased the prognostic power of the model on top of clinical and exercise testing variables and provided significant discrimination of survival. In conclusion, the SRI may help refine the prognostic stratification of patients with a negative exercise test result using standard electrocardiographic criteria
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
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