The purpose of this article was to introduce an easy and inexpensive way of making a simulator for training in Doppler ultrasound flow rate measurement using a continuous renal replacement therapy machine and home-made phantoms. A Doppler ultrasound flow simulator was made using a continuous renal replacement therapy machine and vascular phantoms for flow rate assessment of dialysis access with readily accessible components including rubber tube, keyboard cleaning gel, and freeze-dried instant coffee granules. The simulator is an affordable and easy method of Doppler ultrasound flow rate measurement training for dialysis staff using materials readily available in dialysis centers.
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http://dx.doi.org/10.1177/1129729819845731 | DOI Listing |
Arq Bras Oftalmol
January 2025
Department of Ophthalmology & Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
Purpose: To evaluate if color Doppler can detect internal blood flow in circumscribed choroidal hemangioma.
Methods: This cross-sectional study examined seven eyes of seven participants with circumscribed choroidal hemangiomas, with or without prior treatment. B-scan ultrasound and color Doppler were used to assess the dimensions, topographical distribution, and internal blood flow of the affected eyes.
Physiol Rep
February 2025
Department of Biomedical Engineering, Toyo University, Saitama, Japan.
The present study aims to examine the effect of 4 h of continuous sitting on cerebral endothelial function, which is a crucial component of cerebral blood flow regulation. We hypothesized that 4 h of sitting may impair cerebral endothelial function similarly to how it affects lower limb vasculature. Thirteen young, healthy participants were instructed to remain seated for 4 h without moving their lower limbs.
View Article and Find Full Text PDFJ Cardiovasc Surg (Torino)
February 2025
Department of Vascular Surgery, ASST Settelaghi Universitary Teaching Hospital, University of Insubria, Varese, Italy.
Optimizing the longevity of vascular access in hemodialysis patients remains a critical aspect of patient care, given the significant role of arteriovenous fistulas (AVFs) and arteriovenous grafts (AVGs) in enabling effective dialysis. Vascular access complications, such as stenosis, thrombosis, and cannulation-related damage, continue to challenge both the functionality and the sustainability of these access points. Recent advancements underscore the importance of a robust follow-up strategy, integrating clinical evaluations with diagnostic tools like color Doppler ultrasound (CDU) and emerging interventional approaches such as drug-coated balloon (DCB) angioplasty.
View Article and Find Full Text PDFCureus
December 2024
Department of Emergency Medicine, Jordan University of Science and Technology, Irbid, JOR.
Background: Testicular torsion (TT) is a urological emergency requiring prompt intervention to prevent irreversible damage to the testicle.
Objective: This study aims to assess trends in men's TT referrals, diagnostic evaluation through Doppler sonography (DS) scan, symptoms before surgery, orchidectomy rates, and TT laterality in relation to age and seasons of the year.
Methods: This observational retrospective cohort study included all patients treated for TT at King Abdullah University Hospital between 2009 and 2021.
Plast Reconstr Surg Glob Open
January 2025
Department of Theoretical Physics, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany.
Botulinum toxin-A (BTX-A) is widely used for aesthetic purposes and is recognized for its vasomotor actions. However, new medical applications have emerged. This study aims to describe the effect of BTX-A on human skin perfusion, particularly vessel diameter, blood flow, and blood vessel density in regions with known low vessel density.
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