A 68-year-old woman who had a retrievable inferior vena cava filter implanted 10 years ago presented with sudden-onset back pain. Initial computed tomography angiography demonstrated migration of a fractured strut that appeared embedded in the anterior right ventricular free wall without pericardial effusion. Subsequent gated computed tomography of the chest demonstrated further migration of the fragment, which was now penetrating the right ventricular free wall and extending into the pericardial sac. At the time of operative removal through a limited left anterior thoracotomy, the fractured strut had migrated completely through the heart and was positioned posteriorly in the pericardial sac.
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http://dx.doi.org/10.1016/j.atssr.2022.10.001 | DOI Listing |
J Hazard Mater
January 2025
School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 610031, China.
Chemical weathering of lithologies with high geochemical backgrounds such as black shale has been proposed to be a critical source for toxic elements in soil and water systems. However, mechanisms controlling the release, migration and enrichment of toxic elements during black shale weathering are poorly understood. This study utilized a suite of micro analytical techniques such as TESCAN integrated mineral analyzer (TIMA), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS) and electron micro-probe analysis (EMPA) to elucidate the intimate relationship between mineralogical transformations and elemental behaviors from profile scale to mineral scale.
View Article and Find Full Text PDFInt Immunopharmacol
January 2025
College of Pharmacy, Zunyi Medical University, Zunyi 563006, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China. Electronic address:
Centella asiatica (L.) Urban, one of the authentic medicinal materials from Guizhou Province in China, has been traditionally applied for the treatment of contusions and fractures, as well as for promoting wound healing. Preliminary research suggests that asiaticoside-nitric oxide hydrogel (ACNO) exhibits the potential to enhance the healing of diabetic wounds (DWs); however, the underlying molecular mechanisms require further elucidation.
View Article and Find Full Text PDFPostmenopausal osteoporosis is a chronic inflammatory disease characterized by decreased bone mass and increased bone fracture risk. Estrogen deficiency during menopause plays a major role in post-menopausal osteoporosis by influencing bone, immune, and gut cell activity. In the gut, estrogen loss decreases tight junction proteins that bind epithelial cells of the intestinal barrier together.
View Article and Find Full Text PDFSci Rep
January 2025
College of Petroleum Engineering, Liaoning Petrochemical University, Fushun, China.
The laminae of varying lithologies are characteristic of shale oil reservoirs, with their pronounced heterogeneity and fluid-solid coupling significantly impacting oil productivity. To this end, this study initially quantified the permeability and mechanical heterogeneity in lamina-developed shale through permeability tests and quasi triaxial mechanical experiments on shale cores from different orientations in the Jiyang Depression. These tests revealed marked brittleness in horizontally oriented cores and elasticity in vertically oriented cores.
View Article and Find Full Text PDFHeliyon
January 2025
Department of Civil and Environmental Engineering, Maroun Semaan Faculty of Engineering and Architecture, American University of Beirut, Lebanon.
The composition of hydraulic fracturing (HF) fluid poses risks to human health and the environment by impacting drinking water sources. Fracturing fluid recovery rate is highly variable, and the fact that a high percentage of the injected HF fluid is not produced back to the surface in some areas raises questions about its fate and possible migration into aquifers. In this paper, the composition of the HF fluid and related toxicity are described, along with insights about the environmental impact linked with HF fluid, synthesized spill data, main factors affecting the flow-back ratio, and induced seismicity related to HF activities.
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