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Machine learning validation of the AVAS classification compared to ultrasound mapping in a multicentre study.
Sci Rep
January 2025
Centre for Medical Education, Queen's University Belfast, Belfast, UK.
The Arteriovenous Access Stage (AVAS) classification simplifies information about suitability of vessels for vascular access (VA). It's been previously validated in a clinical study. Here, AVAS performance was tested against multiple ultrasound mapping measurements using machine learning.
View Article and Find Full Text PDFA rare case of paradoxical embolization due to an acquired extracardiac right-to-left shunt during covid-19 infection: Every street leads to heart.
J Cardiol Cases
October 2024
Pediatric Cardiology Unit, University of Campania "Luigi Vanvitelli", AORN "Ospedali dei Colli", Monaldi Hospital, Naples, Italy.
Unlabelled: Right-to-left shunt may be a cause of paradoxical embolization (and cryptogenic cerebral ischemic events). Patent foramen ovale and pulmonary arterio-venous malformations are the most common cause of paradoxical embolization; however, some rare cardiovascular lesions may cause a right-to-left shunt with consequent paradoxical embolization. We describe a case of a young child with superior sinus venosus atrial septal defect who underwent surgical closure and developed a cryptogenic cerebral ischemic attack due to a rare cause of paradoxical embolization, during a long-term follow-up.
View Article and Find Full Text PDFHereditary hemorrhagic telangiectasia is an autosomal dominant disorder caused by mutations in the bone morphogenetic protein signaling pathway, leading to arteriovenous malformations. While previously thought to share molecular and cellular dysregulation, this study reveals highly distinct mechanisms depending on whether mutations occur in Alk1 or SMAD4. Loss of SMAD4 enhances endothelial cell responses to flow, including flow-regulated transcription and cell migration against blood flow, causing excessive pruning of capillaries and the formation of single large shunts.
View Article and Find Full Text PDFDirect anastomosis indwelling needle puncture: a rapid and safe transitional hemodialysis access for patients with renal failure.
Ren Fail
December 2025
Department of Nephrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Objectives: Vascular access thrombosis (VAT) is a common complication in patients with end-stage renal disease (ESRD), significantly impacting hemodialysis efficacy and patient survival. Currently, temporary dialysis access is typically established deep vein catheterization (VC), however, this method is highly invasive and associated with risks of infection and other complications. This study aims to explore the feasibility of using direct anastomosis indwelling needle puncture (DAINP) for temporary dialysis access.
View Article and Find Full Text PDFMoroccan Adaptation of the 'Self-Care Behaviour Assessment Scale' for Arteriovenous Fistula in Haemodialysis.
J Ren Care
March 2025
Faculty of Sciences Semlalia, Laboratory of Pharmacology, Neurobiology, Anthropobiology and Environment, Cadi Ayyad University, Marrakech, Morocco.
Background: Arteriovenous fistula self-care behaviours in patients receiving haemodialysis are essential to maintain patency of vascular access and prevent its life-threatening complications. Assessing arteriovenous fistula self-care behaviours in patients receiving haemodialysis requires a reliable and valid tool.
Objective: The aim of this study was to adapt and translate the Portuguese scale for the assessment of self-care behaviours of arteriovenous fistula in patients receiving haemodialysis into the Moroccan dialect and evaluate its psychometric properties in the Moroccan context.
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