With the increased use of implanted venous access devices (IVADs) for continuous long-term venous access, several techniques such as percutaneous endovascular fibrin sheath removal, have been described, to maintain catheter function. Most standard techniques do not capture the stripped fibrin sheath, which is subsequently released in the pulmonary circulation and may lead to symptomatic pulmonary embolism. The presented case describes an endovascular technique which includes stripping, capture, and removal of fibrin sheath using a novel filter device. A 64-year-old woman presented with IVAD dysfunction. Stripping was performed using a co-axial snare to the filter to capture the fibrin sheath. The captured fragment was subsequently removed for visual and pathological verification. No immediate complication was observed and the patient was discharged the day of the procedure.
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http://dx.doi.org/10.1007/s00270-016-1329-y | DOI Listing |
Cardiovasc Eng Technol
December 2024
Department of Biomedical Engineering, The Pennsylvania State University, 122 Chemical and Biomedical Engineering Building, University Park, PA, USA.
Purpose: Central venous catheters (CVCs) provide a direct route to the venous circulation but are prone to catheter-related thrombosis (CRT). A known CRT risk factor is a high catheter-to-vein ratio (CVR), or a large catheter diameter with respect to the indwelling vein size. In this study, the CVR's effect on CVC hemodynamics and its impact on CRT is investigated with in vitro and in silico experiments.
View Article and Find Full Text PDFRegen Biomater
September 2024
Andalusian Network of Design and Translation of Advanced Therapies, Unidad de Producción Celular e Ingeniería Tisular, Virgen de las Nieves University Hospital, Granada, 18014, Spain.
Human plasma is a natural biomaterial that due to their protein composition is widely used for the development of clinical products, especially in the field of dermatology. In this context, this biomaterial has been used as a scaffold alone or combined with others for the development of cellular human plasma-based skin substitutes (HPSSs). Herein, the biological properties (cell viability, cell metabolic activity, protein secretion profile and histology) of several variations of a clinical HPSS model, regarding the biomaterial composition (alone or combined with six secondary biomaterials - serine, fibronectin, collagen, two types of laminins and hyaluronic acid), the cellular structure (trilayer, bilayer, monolayer and control without cells) and their skin tissue of origin (abdominal or foreskin cells) and the manufacturing process [effect of partial dehydration process in cell viability and comparison between submerged (SUB) and air/liquid interface (ALI) methodologies] have been evaluated and compared.
View Article and Find Full Text PDFClin Nucl Med
November 2024
Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University Hospital, Kyoto, Japan.
J Vasc Access
August 2024
Centro Hospitalar Universitário de Lisboa Central, Serviço de Nefrologia e Transplantação Renal, Lisbon, Portugal.
Central venous catheters are a frequently used vascular access for hemodialysis. Fibrin sheath formation is a common complication and is associated with catheter malfunction. Although fibrin sheath angioplasty with catheter exchange is a frequently employed procedure, it can be associated with mechanical complications.
View Article and Find Full Text PDFCaspian J Intern Med
January 2024
Department of Cardiology, Ayatollah Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran.
Background: Dialysis cuffed catheter dysfunction results in inadequate dialysis, increased sepsis risk, and a shortened catheter life. It may be possible to prolong catheter function by identifying the causes of cuffed catheter dysfunction.
Methods: This study was a cross-sectional descriptive study conducted in 2021-2022 on hemodialysis patients with jugular cuff catheters.
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