1,720,983 research outputs found
Adrenal venous sampling in dye-allergic primary aldosteronism patients: prevalence, pitfalls and a possible solution
No full textTransjugular intra-hepatic approach for portal vein stenting in post-inflammatory portal vein stenosis
No full textThe Key Role of CT for Success of Adrenal Venous Sampling Illustrated by a Unique Clinical Case
No full textSubtyping of Primary Aldosteronism by Adrenal Venous Sampling
No full text: Primary aldosteronism (PA), the most common cause of arterial hypertension, is surgically curable if a unilateral source of the hyperaldosteronism is discovered. To identify the patients who are curable, all current guidelines recommend adrenal venous sampling (AVS), a procedure which, albeit simple in principle, remains scarcely available and markedly under-utilized, because it is still perceived as technically challenging, invasive, and difficult to interpret. The lack of uniformly accepted standards for performance and interpretation of AVS, alongside the diffuse concerns that, albeit quite rarely, it can be complicated by adrenal vein rupture, contribute to the scant utilization of AVS. In the last decade, several major studies have contributed to a greater understanding of the use of AVS in PA patients, thus paving the way to a more rational and effective application that can allow to diagnose many more PA patients with a unilateral form of the disease to be referred for curative adrenalectomy. Moreover, microcatheters and androstenedione have been introduced to increase the success rate. This review provides updated information on the subtyping of PA by means of AVS and examines key issues on the selection and preparation of patients, the optimal performance of the procedure, and the interpretation of its results for diagnostic purposes, even in the most challenging cases. Situations when AVS can be omitted before surgery and alternative functional imaging techniques that have been proposed to identify unilateral surgical curable PA to circumvent the bottle-neck represented by the limited availability of AVS world-wide, are also discussed
Metoclopramide unmasks potentially misleading contralateral suppression in patients undergoing adrenal vein sampling for primary aldosteronism
No full textBlood oozing: A cause of life-threatening bleeding without overt source after transcatheter aortic valve replacement
No full textBACKGROUND:
Post-procedure non-access site-related bleedings have a significant impact on mortality in patients treated by transcatheter aortic valve replacement (TAVR). Notwithstanding, the source of these bleedings is frequently indeterminate, with potentially serious clinical implications related to lack of diagnosis and treatment.
METHODS:
Out of 513 TAVR performed between June 2007 and January 2016 in the Interventional Cardiology Laboratory of the Department of Cardiac, Thoracic and Vascular Sciences, University Hospital of Padua, we identified few proven cases of concealed bleeding after TAVR due to blood oozing.
RESULTS:
We report three cases of angiographically confirmed post-TAVR non-access bleedings related to spontaneous blood oozing, a life-threatening condition consisting of diffuse capillary hemorrhage developing from vessels not directly involved by the procedure. We hypothesize that spontaneous post-procedural blood oozing may account for a substantial proportion of non-overt, non-access site-related bleeding after TAVR.
CONCLUSION:
The possibility of post-TAVR blood oozing is largely neglected in the literature, and comprehensive categorization of non-access site bleedings in current standardized endpoints of TAVR studies is missing. Early assessment with arterial and venous contrast phase angio-MDCT scans in case of post-TAVR unexplained and persistent anemia may allow diagnosis and treatment of this subtle condition
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
Feasibility and Utility of Chest-X ray on Portable Normothermic Perfusion System
Full text linkEx Vivo Lung Perfusion (EVLP) represents a unique platform for donor lung assessment and reconditioning.
Graft assessment during EVLP is a complex process based on different parameters. In addition to standard parameters, radiologic evaluation is acquiring great importance in its ability to identify small unrecognized inflammatory/infectious processes that can complicate the postoperative outcome
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