Autotransfusion and haemodilution are the most safe and well known methods of blood protection in patients planned for vascular operations. During reconstructive vascular surgery autotransfusion with hypovolemic or normovolemic haemodilution were used. In the I group of patients hypovolemic haemodilution was done. In the II group of patients vascular bed was filed up with Ringer solution or with 6% solution of hydroxyethyl starch. The type of haemodilution and its influence on haemodynamics were estimated. Investigations were done by echocardiograph: ATL ULTRAMARK 8. It was concluded that the most effective are autotransfusion and normovolemic haemodilution with filing up vascular bed with Ringer solution.
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Sci Rep
January 2025
School of Computer Science, Hunan First Normal University, Changsha, 410205, China.
Retinal blood vessels are the only blood vessels in the human body that can be observed non-invasively. Changes in vessel morphology are closely associated with hypertension, diabetes, cardiovascular disease and other systemic diseases, and computers can help doctors identify these changes by automatically segmenting blood vessels in fundus images. If we train a highly accurate segmentation model on one dataset (source domain) and apply it to another dataset (target domain) with a different data distribution, the segmentation accuracy will drop sharply, which is called the domain shift problem.
View Article and Find Full Text PDFUpdates Surg
January 2025
Department of Gastrointestinal and Transplant Surgery, Hospital São Lucas Copacabana, Hospital Adventista Silvestre and Hospital Universitário Clementino Fraga Filho-UFRJ, Rio de Janeiro, Brazil.
Although living donor liver transplantation has evolved, small-for-size syndrome remains a feared complication. Achieving optimal outflow for the graft with limited donor risk is possible with an experienced team and different techniques. Here we describe the technical aspects of living donor liver transplantation using a right lobe graft, including the different types of grafts, venous reconstructions and the importance of preoperative workup.
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January 2025
Department of Vascular Surgery, Miller Family Heart Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA.
Objective: Superior vena cava syndrome (SVC) is a debilitating disease, and surgical reconstruction has been described with some of the best results using spiral great saphenous vein (SGSV) grafts. SGSV grafts can be difficult to construct, and a long segment of saphenous vein is needed. Femoral vein has been an excellent conduit for infected aortic and peripheral reconstructions in our hands, and we sought to review outcomes using this conduit for SVC reconstruction.
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January 2025
National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.
3D printed titanium scaffold has promising applications in orthopedics. However, the bioinert titanium presents challenges for promoting vascularization and tissue growth within the porous scaffold for stable osteointegration. In this study, a modular porous titanium scaffold is created using 3D printing and a gradient-surface strategy to immobilize QK peptide on the surface with a bi-directional gradient distribution.
View Article and Find Full Text PDFPlant Divers
November 2024
CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
The Indo-Burma Biodiversity Hotspot is renowned for its rich biodiversity, including that of vascular plants. However, the fern diversity and its endemism in this hotspot have not been well understood and so far, the diversity of very few groups of ferns in this region has been explored using combined molecular and morphological approaches. Here, we updated the plastid phylogeny of the Java fern genus with 226 (115% increase of the latest sampling) samples across the distribution range, specifically those of three phylogenetically significant species, , .
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