2,173 research outputs found
Mitigation of blast resistant glazing façades supported by prestressed cables by using dissipative devices
No full textThe paper presents the results of several studies, performed at the Department of Civil and Environmental
Engineering of the University of Trieste, related to the development of a dissipative system capable to absorb part of
the blast‐induced stresses exerted against a glass‐steel curtain wall supported by prestressed cables. In particular, in
order to mitigate the structural damages of the critical components constituting a glass‐steel façade, dissipative devices
are installed at the base and in the top of the system of vertical cables connected to the spiders supporting the
laminated glass panes. The aim is to improve the blast reliability and the mechanical performances of the glass‐steel
curtain wall façade. In the paper, several solutions are numerically investigated. By means of many dynamic nonlinear
analyses, the most advantageous solution is individuated
Durable staged hybrid ablation with thoracoscopic and percutaneous approach for treatment of long-standing atrial fibrillation: A 30-month assessment with continuous monitoring
No full textObjectives: Electrophysiologic and surgical procedures to treat stand-alone atrial fibrillation (AF) have recently evolved, but disappointing results in patients with long-standing persistent (LSP) AF have challenged the durability of these procedures. Methods: Lone AF patients (n = 36) with either LSP-AF (n = 28) or persistent AF (n = 8) were prospectively enrolled in the study and consecutively treated by thoracoscopic ablation followed by electrophysiologic evaluation 30 days afterward. Mean left atrial dimension was 50.3 ± 5.5 mm, and average AF duration was 72.8 months (range, 7-240 months). The thoracoscopic procedure was a right monolateral approach to create a box lesion using a temperature-controlled radiofrequency device with suction adherence. A continuous rhythm monitoring device was implanted at the end of the operation. Results: Thoracoscopic ablation was successfully completed without morbidity or mortality and without any intensive care unit stay. Intraoperative exit and entrance block was achieved in 100% and 88.8% (32/36) of patients, respectively. At 33 ± 2 days after the operation, an electrophysiologic study confirmed entry-exit block in 83.3% (30/36) whereas pulmonary vein reconnections were observed in 16.7% (6/36) of patients. Additional transcatheter lesions were performed in 61.1% (22/36) of patients. At a mean follow-up of 30 months (range, 1-58 months), 91.6% (33/36) of patients are in sinus rhythm with 77.7% (28/36) of these patients off antiarrhythmic drugs and 88.8% (32/36) free of warfarin. Long-term incidence of left atrial flutter was 0%. Conclusions: The combination of a surgical box lesion and transcatheter ablation in a hybrid approach provided excellent durable clinical outcomes in patients with LSP-AF. Copyright © 2012 by The American Association for Thoracic Surgery
Postal de Claudio Vivas a Maruja Vieira, junio 23 de 1955
No full textPostal de Claudio Vivas a Maruja Vieira, felicitándola por el reconocimiento que le fue otorgado a la autora de poemasPostcard from Claudio Vivas to Maruja Vieira, congratulating her for the recognition given to the author of poems.Publicación, fondo Maruja Vieira, carpeta 1, folio
The hybrid thoracoscopic-transcatheter approach is associated with incremental benefits at mid-term in patients with persistent atrial fibrillation
No full textHYBRID APPROACH FOR THE TREATMENT OF LONG STANDING PERSISTENT AF: ELECTROPHYSIOLOGICAL FINDINGS AND CLINICAL RESULTS
No full textThe Double-Isolation Procedure Provides Superior Outcomes than the Box Lesion Set in Patients with Persistent AF
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Successful treatment of lone persistent atrial fibrillation by means of a hybrid thoracoscopic-transcatheter approach
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