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International Journal of Artificial Organs

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https://www.readbyqxmd.com/read/28623642/particle-spallation-in-a-microfluidic-blood-processing-device-the-problem-of-using-peristaltic-pumps-and-silicon-based-microfilters
#1
Monica Faria, Yi Liu, Edward F Leonard
Peristaltic pumps rely on constant compression of elastomeric tubing from which particles may be shed, a phenomenon known as spallation. We studied spallated particles on microfluidic filtration devices with photolithographically prepared micron-level pore fields. Filtration of ultra-pure water through these pores was analyzed using either the usual peristaltic pump or a reciprocating pair of syringe pumps. Using syringe pumps, transmembrane pressure (TMP) values during filtration at 2.5 cm3/min revealed steady filtration for over 80 minutes at 2...
June 15, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28623643/transplanted-fibroblasts-proliferate-in-host-bronchial-tissue-and-enhance-bronchial-anastomotic-healing-in-a-rodent-model
#2
Mario Vitacolonna, Fabian Doyon, Djeda Belharazem, Charalambos Tsagogiorgas, Peter Hohenberger, Eric D Roessner
INTRODUCTION: Healing of airway anastomoses after preoperative irradiation can be a significant clinical problem. The augmentation of bronchial anastomoses with a fibroblast-seeded human acellular dermis (hAD) was shown to be beneficial, although the underlying mechanism remained unclear. Therefore, in this study we investigated the fate of the fibroblasts transplanted to the scaffold covering the anastomosis. MATERIAL AND METHODS: 32 Fisher rats underwent surgical anastomosis of the left main bronchus...
June 14, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28623641/clinical-expectations-for-the-new-bioactive-treatments-greater-well-being-or-longer-survival
#3
Ilan Szwarc, Fernando Vetromile, Andrea Buscaroli, Marie Françoise Servel, Àngel Argilés
No abstract text is available yet for this article.
June 14, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28623640/creating-a-bioartificial-kidney
#4
Rosalinde Masereeuw, Dimitrios Stamatialis
No abstract text is available yet for this article.
June 14, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28623639/anemia-after-continuous-flow-left-ventricular-assist-device-implantation-characteristics-and-implications
#5
Javier Amione-Guerra, Ana S Cruz-Solbes, Arvind Bhimaraj, Barry H Trachtenberg, Sai R Pingali, Jerry D Estep, Myung H Park, Ashrith Guha
BACKGROUND: Anemia is common in patients with heart failure and is associated with adverse outcomes. Management of anemia in CF-LVAD patients is not well studied. Our purpose is to characterize and identify the etiology of anemia in CF-LVAD patients. Secondary objectives are to describe the effect of CF-LVAD on pre-existing anemia and assess its impact after CF-LVAD support. METHODS: Cross-sectional study from January to July 2015 of ambulatory patients supported with a CF-LVAD for at least 6-months that presented with hemoglobin <12 g/dL and no recent gastrointestinal bleeding...
June 14, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28604999/percutaneous-cardiac-support-during-myocardial-infarction-drastically-reduces-mortality-perspectives-from-a-swine-model
#6
Maria Giovanna Trivella, Alessandra Piersigilli, Fabio Bernini, Gualtiero Pelosi, Silvia Burchielli, Stefano Puzzuoli, Claudia Kusmic, Antonio L'Abbate
BACKGROUND/AIMS: Acute myocardial infarction (AMI) with cardiogenic shock (CS) remains the leading cause of in-hospital death in acute coronary syndromes. In the AMI-CS pig model we tested the efficacy of temporary percutaneous cardiorespiratory assist device (PCRA) in rescuing the failing heart and reducing early mortality. METHODS: In open-chest pigs we induced AMI by proximal left anterior descending coronary artery (LAD) ligation. Eight animals without PCRA (C group) were compared with 12 animals otherwise treated with PCRA (T group), starting approximately at 60 minutes post-occlusion and lasting 120-180 minutes...
June 6, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574107/continuous-renal-replacement-therapy-forty-year-anniversary
#7
Claudio Ronco
In 1977 Peter Kramer performed the first CAVH (continuous arteriovenous hemofiltration) treatment in Gottingen, Germany. CAVH soon became a reliable alternative to hemo- or peritoneal dialysis in critically ill patients. The limitations of CAVH spurred new research and the discovery of new treatments such as CVVH and CVVHD (continuous veno-venous hemofiltration and continuous veno-venous hemodialysis). The alliance with industry led to development of new specialized equipment with improved accuracy and performance in delivering continuous renal replacement therapies (CRRTs)...
May 31, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28569990/prospective-randomized-multicenter-controlled-trial-triathron-1-on-a-new-antithrombogenic-hydrophilic-dialysis-membrane
#8
Claudio Ronco, Alessandra Brendolan, Federico Nalesso, Monica Zanella, Massimo De Cal, Valentina Corradi, Grazia M Virzì, Fiorenza Ferrari, Francesco Garzotto, Anna Lorenzin, Aakash N Karopadi, Marco Sartori, Silvia De Rosa, Sara Samoni, Faeq Husain-Syed, Alessandra Spinelli, Mauro Neri, Gianluca Villa, Alberta Alghisi
INTRODUCTION: Hemodialysis treatment requires anticoagulation to prevent thrombosis of the dialyzer. The Hydrolink® (NV series; Toray) has been designed to reduce thrombotic complications by increasing membrane hydrophilic properties. Previous studies have confirmed reduced platelet activation, improved removal of β2-microglobulin and excellent small-solute removal. METHODS: We designed a prospective, multi-centered, randomized clinical study to compare the antithrombogenic effects (platelet count) of NV dialyzers versus conventional treatment...
May 29, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574109/a-new-approach-combining-venoarterial-extracorporeal-membrane-oxygenation-and-crrt-for-adults-a-retrospective-study
#9
Xing-Liang Zhou, Yan-He Chen, Qing-Yun Wang
PURPOSE: This study aimed to assess a new approach combining venoarterial (VA) extracorporeal membrane oxygenation (ECMO) and continuous renal replacement therapy (CRRT) in adults, while monitoring CRRT circuit pressures. METHODS: The inlet and outlet of the CRRT circuit were connected to preoxygenator port and postoxygenator port, respectively. Then, complications and CRRT circuit pressures were evaluated. RESULTS: 7 patients underwent combined VA-ECMO and CRRT; 16 filters were used...
May 28, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574110/closed-loop-helium-circulation-system-for-actuation-of-a-continuously-operating-heart-catheter-pump
#10
Alen Karabegovic, Markus Hinteregger, Christoph Janeczek, Werner Mohl, Margit Gföhler
BACKGROUND: Currently available, pneumatic-based medical devices are operated using closed-loop pulsatile or open continuous systems. Medical devices utilizing gases with a low atomic number in a continuous closed loop stream have not been documented to date. This work presents the construction of a portable helium circulation addressing the need for actuating a novel, pneumatically operated catheter pump. The design of its control system puts emphasis on the performance, safety and low running cost of the catheter pump...
May 27, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574115/a-comparative-study-of-cone-beam-computed-tomography-and-periapical-radiographs-in-decision-making-after-endodontic-instrument-fractures
#11
Senem Y Özer, Gökhan Özkan, Emrah Çetin, Hicran D Özkan
PURPOSE: This study aimed to compare the diagnostic efficacies of periapical radiographs (PRs) and cone-beam computed tomography (CBCT) scans on clinicians' decision-making in diagnosing and providing treatment of fractured instruments in root canals during glide path preparation. METHODS: 40 maxillary molar teeth were selected and randomly divided into 4 groups. In each experimental group (n = 10), Hedstroem stainless steel instruments were fractured in mesiobuccal (MB) or distobuccal (DB) root canals...
May 26, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574113/medium-cut-off-membranes-closer-to-the-natural-kidney-removal-function
#12
Carina Zweigart, Adriana Boschetti-de-Fierro, Michael Hulko, Lars-Göran Nilsson, Werner Beck, Markus Storr, Bernd Krause
No abstract text is available yet for this article.
May 26, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574112/evaluation-of-color-changes-of-dental-luting-materials-in-food-colorant-solutions
#13
Canan Akay, Merve Ç Tanış
BACKGROUND: The purpose of this study was to compare the color stability and water absorption of 3 commercially available resin cements in vitro by storing them in 0.15% erythrosine, dark brown and sunset yellow for 30 days. METHODS: 2 self-adhesive resin cement and 1 dual/light curing, resin-based dental luting material were evaluated (total 120 samples). The CIE L, a, b of 10 mm diameter-2.0 mm height disk shaped samples was measured using a spectrophotometer for color stability on a white background, 10 mm diameter-1...
May 24, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574108/comparative-in-vivo-analysis-of-the-role-of-the-adventitia-and-the-endothelium-on-arterial-mechanical-function-relevance-for-aortic-counterpulsation
#14
Daniel Bia, Yanina Zócalo, Sandra Wray, Edmundo I Cabrera-Fischer
PURPOSE: The comparative effect of the intimal and adventitial layers on arterial biomechanics control, in basal and altered conditions, remains to be elucidated. This study aimed (1) to characterize the arterial conduit (CF) and buffering (distensibility) function of the iliac arteries in in vivo animals, in which the intimal and adventitial layers were removed; (2) to determine the effects of intra-aortic ballon pumping (IABP) on simultaneously de-adventitialized (DA) and de-endothelialized (DE) iliac arteries before and after induced heart failure...
May 24, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574106/biostable-scaffolds-of-polyacrylate-polymers-implanted-in-the-articular-cartilage-induce-hyaline-like-cartilage-regeneration-in-rabbits
#15
María Sancho-Tello, Francisco Forriol, José J Martín de Llano, Carmen Antolinos-Turpin, José A Gómez-Tejedor, José L Gómez Ribelles, Carmen Carda
PURPOSE: To study the influence of scaffold properties on the organization of in vivo cartilage regeneration. Our hypothesis was that stress transmission to the cells seeded inside the pores of the scaffold or surrounding it, which is highly dependent on the scaffold properties, determines the differentiation of both mesenchymal cells and dedifferentiated autologous chondrocytes. METHODS: 4 series of porous scaffolds made of different polyacrylate polymers, previously seeded with cultured rabbit chondrocytes or without cells, were implanted in cartilage defects in rabbits...
May 24, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574105/development-of-a-prolonged-warm-ex-vivo-perfusion-model-for-kidneys-donated-after-cardiac-death
#16
Daniel Urcuyo, Matthew F Blum, Qiang Liu, Ahmed Nassar, Laura D Buccini, Teresa Diago Uso, Emilio D Poggio, William M Baldwin Iii, David A Goldfarb, Cristiano Quintini
PURPOSE: Ex vivo perfusion of marginal kidney grafts offers the chance to expand the donor pool, but there is no current clinical standard for the prolonged warm perfusion of renal grafts. This exploratory pilot study seeks to identify a stable ex vivo kidney perfusion model that can support low intravascular resistance and preserve histologic architecture in a porcine donation after cardiac death (DCD) model. METHODS: 15 kidneys were preserved in 1 of 3 settings: normothermic whole blood (NT-WB), normothermic Steen Solution™ (XVIVO Perfusion) with whole blood (NT-Steen/WB), or subnormothermic Steen Solution™ at 21°C (SNT-Steen)...
May 24, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574102/a-clinician-s-artificial-organ-instant-messaging-applications-in-medical-care
#17
Gokhan Tazegul, Humeyra Bozoglan, Tahir S Ogut, Mustafa K Balcı
After the development of the first phone at the end of 19th century, communication technologies took a great leap forward in the 20th century. With the birth of the "smartphone" in the 21st century, communication technologies exponentially evolved and became an important part of our daily routine. Effective communications between clinicians is critical in medical care and miscommunications are a source of errors. Although telecommunication technologies have proliferated dramatically in the last decade, there is scarce evidence-based information on the use of this technology in medical care...
May 24, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574114/venlafaxine-intoxication-with-development-of-takotsubo-cardiomyopathy-successful-use-of-extracorporeal-life-support-intravenous-lipid-emulsion-and-cytosorb%C3%A2
#18
Ines Schroeder, Michael Zoller, Matthias Angstwurm, Felix Kur, Lorenz Frey
We describe a young patient who ingested 18 g (240 times the daily therapeutic dose) of venlafaxine in a suicide attempt. She developed severe cardiomyopathy in a takotsubo distribution causing cardiogenic shock and multi-organ dysfunction syndrome (MODS). She was successfully treated with intravenous lipid emulsion (ILE), extracorporeal life support (ECLS) and CytoSorb®. This is remarkable as, to the best of the authors' knowledge, this is the highest amount of venlafaxine intake seen in the literature with a nonfatal outcome...
May 23, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574111/isolation-characterization-and-cold-storage-of-cells-isolated-from-diseased-explanted-livers
#19
Elisa Belaschk, Susanne Rohn, Ramla Mukiibi, Anja Reutzel-Selke, Peter Tang, Birgit Sawitzki, Johann Pratschke, Igor M Sauer, Martina T Mogl
INTRODUCTION: Livers discarded after standard organ retrieval are commonly used as a cell source for hepatocyte transplantation. Due to the scarcity of organ donors, this leads to a shortage of suitable cells for transplantation. Here, the isolation of liver cells from diseased livers removed during liver transplantation is studied and compared to the isolation of cells from liver specimens obtained during partial liver resection. METHODS: Hepatocytes from 20 diseased explanted livers (Ex-group) were isolated, cultured and stored at 4°C for up to 48 hours, and compared to hepatocytes isolated from the normal liver tissue of 14 liver lobe resections (Rx-group)...
May 23, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28574104/ecmo-and-cytokine-removal-for-bridging-to-surgery-in-a-patient-with-ischemic-ventricular-septal-defect-a-case-report
#20
Stefanie Marek, Gunnar Gamper, Georg Reining, Peter Bergmann, Harald Mayr, Andreas Kliegel
Even in the modern era of percutaneous coronary intervention, postinfarction ventricular septal defect (VSD) remains a serious and often lethal complication. Whether or not immediate surgical repair or delaying surgery a few days aided by intra-aortic counterpulsation provides the optimal strategy remains a matter of debate. An interdisciplinary approach of intensivists and cardiac surgeons in this setting is mandatory. We report the use of veno-arterial extracorporeal membrane oxygenation and extracorporeal blood purification therapy (CytoSorb®) as bridging to surgical closure in a patient with an ischemic VSD leading to protracted cardiogenic shock after posterior myocardial infarction...
May 23, 2017: International Journal of Artificial Organs
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