Left ventricular assist device (LVAD) withdrawal with ventricular recovery represents the optimal outcome for patients previously implanted with an LVAD. The aim of this systematic review was to examine the patient outcomes of device withdrawal via minimally invasive pump decommissioning as compared with reoperation for pump explantation. An electronic search was performed to identify all studies in the English literature assessing LVAD withdrawal. All identified articles were systematically assessed for inclusion and exclusion criteria. Overall, 44 studies (85 patients) were included in the analysis, of whom 20% underwent decommissioning and 80% underwent explantation. The most commonly used LVAD types included the HeartMate II (decommissioning 23.5% vs. explantation 60.3%; p = 0.01) and HeartWare HVAD (decommissioning 76.5% vs. explantation 17.6%; p < 0.001). At median follow-up of 389 days, there were no significant differences in the incidence of cerebrovascular accidents (p = 0.88), infection (p = 0.75), and survival (p = 0.20). However, there was a trend toward a higher recurrence of heart failure in patients who underwent decommissioning as compared with explantation (decommissioning 15.4% vs. explantation 8.2%, cumulative hazard; p = 0.06). Decommissioning appears to be a feasible alternative to LVAD explantation in terms of overall patient outcomes.
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Sci Rep
December 2024
Nuclear Safeguards and Physical Protection Department, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
The effective implementation of domestic and international safeguards necessitates verification techniques for Nuclear Materials (NM). Even in the case of very small quantities of NMs, accounting for and analyzing such traces can provide insights into the mass balance of NMs and/or state activities, ensuring consistency in state declarations. This paper proposes and benchmarks an absolute calibration methodology for estimating the uranium-mass content in large-volume barrels (200 L).
View Article and Find Full Text PDFJ Environ Radioact
December 2024
Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518063, China. Electronic address:
Gamma-ray coded-aperture imaging technology has important applications in the fields of nuclear security, isolated source detection, and the decommissioning of nuclear facilities. However, artifacts can reduce the quality of reconstructed images and affect the identification of the intensity and location of radioactive sources. In this paper, a gamma-ray coded-aperture imaging method based on primitive and reversed coded functions (PRCF) was proposed to reduce imaging artifacts.
View Article and Find Full Text PDFACS ES T Water
July 2024
MTA-SZTE Lendület Biocolloids Research Group, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Hungary.
Effective uranium (U) capture is required for the remediation of contaminated solutes associated with the nuclear fuel cycle, including fuel reprocessing effluents, decommissioning, or nuclear accident cleanup. Here, interactions between uranyl cations (UO ) and a Mg-Al layered double hydroxide (LDH) were investigated using two types of uranyl-bearing LDH colloids. The first (ULDH) was synthesized by coprecipitation with 10% of Mg substituted by UO .
View Article and Find Full Text PDFEnviron Sci Technol
December 2024
Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, Leiden 2300 RA, The Netherlands.
Offshore wind energy (OWE) represents a key technology for achieving a sustainable energy transition. However, offshore wind farms (OWFs) can impact the environment via installation, operation, maintenance, and decommissioning activities together with the raw materials and energy required for their manufacturing. This study assesses the material and carbon footprint of potential OWF locations in the North Sea for various possible future technology developments.
View Article and Find Full Text PDFHeliyon
September 2024
Department of Mechatronics Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh.
The next generation of autonomous-legged robots will herald a new era in the fields of manufacturing, healthcare, terrain exploration, and surveillance. We can expect significant progress in a number of industries, including inspection, search and rescue, elderly care, workplace safety, and nuclear decommissioning. Advanced legged robots are built with a state-of-the-art architecture that makes use of stereo vision and inertial measurement data to navigate unfamiliar and challenging terrains.
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