scholarly journals Bigger is not always better: The consequences of High-flow hemodialysis arterial-venous fistula (Mega fistula)

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Awad Magbri ◽  
Shaukar Rashid ◽  
Balhinder Brar
Keyword(s):  
High Flow ◽  
Venous Fistula

scholarly journals A case report of subclavian steal syndrome caused by high flow radiocephalic arterio venous fistula

2009 ◽  
Vol 42 (7) ◽  
pp. 529-534 ◽  
Author(s):  
Fumiaki Kumagai ◽  
Takahisa Kushida ◽  
Ruka Sasaki ◽  
Masamichi Kondo ◽  
Shigeki Yura ◽  
...  
Keyword(s):  
Case Report ◽  
High Flow ◽  
Subclavian Steal Syndrome ◽  
Subclavian Steal ◽  
Venous Fistula ◽  
Steal Syndrome

scholarly journals Dual-balloon assisted super-selective embolisation of high flow arterial venous fistula within a transplant kidney

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Sara ffrench-Constant ◽  
Nisal Weerakoon ◽  
Rahul Amin ◽  
Luke Dixon ◽  
David Taube ◽  
...  
Keyword(s):  
High Flow ◽  
Transplant Kidney ◽  
Venous Fistula ◽  
Selective Embolisation

Experimental Inferior Caval Replacement with Mesothelium

1987 ◽  
Vol 2 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Y. Louagie ◽  
J.C. Schoevaerdts ◽  
B. Maldague ◽  
C. Remacle ◽  
A. Legrand-Monsieur ◽  
...  
Keyword(s):  
Fibrinolytic Activity ◽  
Inferior Vena ◽  
Vena Cava ◽  
Prostaglandin Synthesis ◽  
High Flow ◽  
Human Values ◽  
Graft Thrombosis ◽  
Antiplatelet Aggregation ◽  
Venous Fistula ◽  
Scanning Electron

Thrombo-resistance of mesothelial grafts was evaluated by replacing the inferior vena cava in 16 dogs. In 10 dogs, treated by antiplatelet aggregation agents, uniform graft thrombosis happened within 15 days. In six other dogs, the addition of an arterio-venous fistula produced conditions of flow (1385 ± 178 ml/min; mean ± s.e.m.) and velocity (17.1 ± 4.5 cm/s) closer to human values and markedly improved the patency rates (four patent over six up to 6 months P < 0.02). Light microscopy and scanning electron microscopy studies performed on the patent grafts showed well preserved mesothelial cells. Mesothelial fibrinolytic activity was 1160 ± 257 tissue activator units/g tissue before and 846 ± 142 activator units/g tissue after implantation (P = n.s.). Prostaglandin synthesis by native mesothelium was respectively 252 ± 103 and 7 ± 3 pg/ml/mg wet tissue/min for 6-keto-PGF1α and TXB2. The synthesis was reduced for 6-keto-PGF1α in the patent grafts but unaltered for TXB2, This work puts forward the suggestion that mesothelium is a promising venous substitute in conditions of high flow.

Anisotropic Membranes as Substrates for Sem

1976 ◽  
Vol 34 ◽  
pp. 444-445
Author(s):  
Thomas P. Turnbull ◽  
W. F. Bowers
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Flow ◽  
Polymer Chemistry ◽  
Surface Porosity ◽  
Transmission Electron ◽  
Pore Texture ◽  
Spongy Layer ◽  
Scanning Electron

Until recently the prime purposes of filters have been to produce clear filtrates or to collect particles from solution and then remove the filter medium and examine the particles by transmission electron microscopy. These filters have not had the best characteristics for scanning electron microscopy due to the size of the pores or the surface topography. Advances in polymer chemistry and membrane technology resulted in membranes whose characteristics make them versatile substrates for many scanning electron microscope applications. These polysulphone type membranes are anisotropic, consisting of a very thin (0.1 to 1.5 μm) dense skin of extremely fine, controlled pore texture upon a much thicker (50 to 250μm), spongy layer of the same polymer. Apparent pore diameters can be controlled in the range of 10 to 40 A. The high flow ultrafilters which we are describing have a surface porosity in the range of 15 to 25 angstrom units (0.0015-0.0025μm).

High Flow Oxygen Therapy and the Pressure to Feed Infants With Acute Respiratory Illness

2020 ◽  
Vol 5 (4) ◽  
pp. 1006-1010
Author(s):  
Jennifer Raminick ◽  
Hema Desai
Keyword(s):  
Clinical Practice ◽  
Clinical Practice Guidelines ◽  
Practice Guidelines ◽  
Oxygen Therapy ◽  
Respiratory Illness ◽  
High Flow ◽  
Oral Feeding ◽  
Respiratory Support ◽  
Acute Respiratory Illness ◽  
High Flow Oxygen

Purpose Infants hospitalized for an acute respiratory illness often require the use of noninvasive respiratory support during the initial stage to improve their breathing. High flow oxygen therapy (HFOT) is becoming a more popular means of noninvasive respiratory support, often used to treat respiratory syncytial virus/bronchiolitis. These infants present with tachypnea and coughing, resulting in difficulties in coordinating sucking and swallowing. However, they are often allowed to feed orally despite having high respiratory rate, increased work of breathing and on HFOT, placing them at risk for aspiration. Feeding therapists who work with these infants have raised concerns that HFOT creates an additional risk factor for swallowing dysfunction, especially with infants who have compromised airways or other comorbidities. There is emerging literature concluding changes in pharyngeal pressures with HFOT, as well as aspiration in preterm neonates who are on nasal continuous positive airway pressure. However, there is no existing research exploring the effect of HFOT on swallowing in infants with acute respiratory illness. This discussion will present findings from literature on HFOT, oral feeding in the acutely ill infant population, and present clinical practice guidelines for safe feeding during critical care admission for acute respiratory illness. Conclusion Guidelines for safety of oral feeds for infants with acute respiratory illness on HFOT do not exist. However, providers and parents continue to want to provide oral feeds despite clinical signs of respiratory distress and coughing. To address this challenge, we initiated a process change to use clinical bedside evaluation and a “cross-systems approach” to provide recommendations for safer oral feeds while on HFOT as the infant is recovering from illness. Use of standardized feeding evaluation and protocol have improved consistency of practice within our department. However, further research is still necessary to develop clinical practice guidelines for safe oral feeding for infants on HFOT.

High-Flow-Sauerstofftherapie in der Notaufnahme – Schritt für Schritt

2020 ◽  
Vol 2 (04) ◽  
pp. 327-335
Author(s):  
Markus Bald ◽  
Carl Josef Hocke
Keyword(s):  
High Flow
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