Ultrasonic pulsed Doppler blood flowmeter for use in extracorporeal circulation.

abstract：:The abdominal left ventricular assist device (ALVAD) is an order of magnitude more effective than conventional intra-aortic balloon pumping (IABP) in unloading and providing circulatory support to the failing left ventricle. This is a report of a unique case which demonstrates that in the absence of pulmonary vascular...

journal_title：Artificial organs

authors： Norman JC,Dacso CC,Reul GJ,Massin EK,Klima T,Kahan BD,Keiser JT,Cooley DA

更新日期：1978-11-01 00:00:00

abstract：:The new Advanced ventricular assist device (Advanced VAD) has many features such as improving pulsatility and preventing regurgitant flow during pump stoppage. The purpose of this study was to evaluate the effects of design modifications of the Advanced VAD on these features in vitro. Bench testing of four versions of...

journal_title：Artificial organs

authors： Miyamoto T,Byram N,Karimov JH,Adams J,Dessoffy R,Kuban BD,Gao S,Horvath DJ,Fukamachi K

更新日期：2019-10-01 00:00:00

abstract：:Recently, there has been an increase in the use of rat models of cardiopulmonary bypass (CPB) for research purposes. Much of this work has focused on cerebral injury associated with CPB. Many of these studies employ a peripheral cannulation approach, often utilizing the caudal artery and internal or external jugular v...

journal_title：Artificial organs

authors： Gourlay T,Modine T

更新日期：2010-06-01 00:00:00

abstract：:Percutaneous pulmonary valve implantation is a potential treatment for right ventricular outflow tract (RVOT) dysfunction. However, RVOT implantation site varies among subjects and the success of the procedure depends on RVOT morphology selection. The aim of this study was to use in vitro testing to establish percutan...

journal_title：Artificial organs

authors： Vismara R,Laganà K,Migliavacca F,Schievano S,Coats L,Taylor A,Bonhoeffer P

更新日期：2009-01-01 00:00:00

abstract：:Low molecular weight heparin (LMH) acts as an anticoagulation agent mainly through its anti-activated coagulation factor X (Xa) activity. Thrombelastography (TEG) is expected to be useful to monitor the dosage of LMH during hemodialysis because reaction time on TEG (TEG-r) is considered to reflect blood thromboplastin...

journal_title：Artificial organs

authors： Shinoda T,Arakura H,Katakura M,Shirota T,Nakagawa S

更新日期：1990-12-01 00:00:00

abstract：:The use of extracorporeal membrane oxygenator instead of standard cardiopulmonary bypass during lung transplantation is debatable. Moreover, recently, the concept of prolonged postoperative extracorporeal membrane oxygenator (ECMO) support has been introduced in many transplant centers to prevent primary graft dysfunc...

journal_title：Artificial organs

authors： Dell'Amore A,Campisi A,Congiu S,Mazzarra S,Pastore S,Dolci G,Baiocchi M,Frascaroli G

更新日期：2020-06-01 00:00:00

abstract：:Many patients all over the world suffer from acute wounds caused by traumas or burns. In most crucial cases, skin regeneration cannot be promoted spontaneously, and skin grafts are applied as the main treatment. However, this therapy has some drawbacks which motivate researchers to develop wound dressings. In this stu...

journal_title：Artificial organs

authors： Mohseni M,Shamloo A,Aghababaei Z,Vossoughi M,Moravvej H

更新日期：2016-08-01 00:00:00

abstract：:This article presents results from the field calculation in a model of biological tissue taking into account the electroporation process. The electroporation model used in this study was proposed and experimentally verified by Glaser et al. for planar membranes. The numerical method for field calculation is based on a...

journal_title：Artificial organs

authors： Ramos A

更新日期：2005-06-01 00:00:00

abstract：:Spiral/helical forms of blood flow have been observed in large arteries of the cardiovascular system, but their benefits remain underappreciated. Spiral flow has been postulated to improve near-wall washout, promoting anti-atherothrombotic conditions. This research aims to study the washout characteristics of spiral f...

journal_title：Artificial organs

authors： Huang Zhang P,Tkatch C,Newman R,Grimme W,Vainchtein D,Kresh JY

更新日期：2019-12-01 00:00:00

abstract：:Recent studies show that oxytocin has various effects on cellular behaviors. Oxytocin is reported to stimulate cardiomyogenesis of embryonic stem cells and endothelial cell proliferation. Mesenchymal stem cells (MSCs) are widely used for cardiac repair, and we elucidated the effect of oxytocin on umbilical cord derive...

journal_title：Artificial organs

authors： Kim YS,Kwon JS,Hong MH,Kim J,Song CH,Jeong MH,Cho JG,Park JC,Kang JC,Ahn Y

更新日期：2010-06-01 00:00:00

abstract：:To overcome the weak mechanical properties of cell/hydrogel composites, a poly(DL-lactic-co-glycolic acid) sandwiched adipose-derived stem cell (ADSC)/fibrin construct was fabricated using a step-by-step mold/extraction method to generate the middle smooth muscle layer of natural blood vessels. A pulse bioreactor with...

journal_title：Artificial organs

authors： Wang X,Sui S

更新日期：2011-06-01 00:00:00

abstract：:It has been over 40 years since the initial clinical application of a cardiac pacemaker. Currently, approximately 300 per million patients in the United States and Europe are kept alive owing to the benefit of implantable pacemakers. Recently, the Japanese Cardiac Pacing Society and the Japanese Society of Artificial ...

journal_title：Artificial organs

authors： Kojima R

更新日期：1994-01-01 00:00:00

abstract：:Artificial oxygen (O2 ) carriers were reported to be protective in ischemia/reperfusion (I/R) in various organs including the heart. In the current study, 20 rats underwent ligation (MI) of the left anterior descending artery, were treated with 10 mL/kg of PEGylated carboxyhemoglobin bovine (SANGUINATE, S+, n = 10) or...

journal_title：Artificial organs

authors： Kawaguchi AT,Salybekov AA,Yamano M,Kitagishi H,Sekine K,Tamaki T

更新日期：2018-12-01 00:00:00

abstract：:We investigated biodegradation and biocompatibility of poly(organophosphazenes). We prepared poly(organophosphazenes) having different side chain groups. The blood compatibility of poly(organophosphazenes) containing fluorinated side groups, poly(bis[trifluoroethoxy]phosphazene) (PbFP) and poly([trifluoroethoxy][ethyl...

journal_title：Artificial organs

authors： Kawakami H,Kanezaki S,Sudo M,Kanno M,Nagaoka S,Kubota S

更新日期：2002-10-01 00:00:00

abstract：:Visual prostheses are the focus of intensive research efforts to restore some measure of useful vision to blind or near-blind patients. The development of such technology is being guided to an extent by tools that simulate prosthesis behavior for healthy sighted subjects in order to assess system requirements and conf...

journal_title：Artificial organs

authors： Obeid I,Veraart C,Delbeke J

更新日期：2010-05-01 00:00:00

abstract：:Molecular biology has been moving swiftly toward clarifying the entire genome of organisms, including human. The human genome efforts that promote this transaction are characterized by the large-scale, high throughput production of data about the structure of the genome of the molecular level and its computer-assisted...

journal_title：Artificial organs

authors： Matsubara K

更新日期：1996-08-01 00:00:00

abstract：:We previously demonstrated that tumor necrosis factor-alpha (TNF-alpha) increased following a reduction in systemic blood flow to 60% or less of the original cardiac output using a left ventricular assist device (LVAD). The aim of this study was to investigate the effect of reducing systemic blood flow on tissue oxyge...

journal_title：Artificial organs

authors： Uozaki Y,Dihmis WC,Yamauchi H,Moczar M,Miyama M,Pasteau F,Tixier D,Bambang SL,Loisance DY

更新日期：2001-01-01 00:00:00

abstract：:The major problems with existing centrifugal pumps are leakage, mechanical trauma, and thrombus formation. In consideration of these problems, a new compact centrifugal pump system was developed. The purpose of this study was to evaluate the new centrifugal pump system clinically. Ten patients underwent open heart sur...

journal_title：Artificial organs

authors： Ninomiya J,Shoji T,Tanaka S,Ikeshita M,Ochi M,Yamauchi S,Yajima T,Yamauchi H,Sugimoto T,Aizawa T

更新日期：1994-09-01 00:00:00

abstract：:Aseptic loosening is the major cause of failure of hip implants after total hip arthroplasty. Stress shielding of the femur is known to be the principal factor involved in the aseptic loosening of hip implants. Solid stems are found to have a greater rigidity; therefore, they transfer less load proximally, which resul...

journal_title：Artificial organs

authors： Sivarasu S,Beulah P,Mathew L

更新日期：2011-06-01 00:00:00

abstract：:Experiments have been successfully performed culminating in functional, vascularized, three-dimensional cardiac muscle tissue. Past experience in tissue engineering has led us to the understanding that cell seeding density plays a critical role in the formation and function of both in vitro and in vivo engineered tiss...

journal_title：Artificial organs

authors： Birla R,Dhawan V,Huang YC,Lytle I,Tiranathanagul K,Brown D

更新日期：2008-09-01 00:00:00

abstract：:Although the debate still continues over the effectiveness of pulsatile versus nonpulsatile perfusion, it has been clearly proven that there are several significant physiological benefits of pulsatile perfusion during cardiopulmonary bypass (CPB) compared to nonpulsatile perfusion. However, the components of the extra...

journal_title：Artificial organs

authors： Undar A,Lodge AJ,Daggett CW,Runge TM,Ungerleider RM,Calhoon JH

更新日期：1998-08-01 00:00:00

abstract：:A computational fluid dynamic model to assess the impact of flow-diverter device on intra-aneurysmal flow in complex aortic aneurysm from the viewpoint of hemodynamics is presented. The aim of this study is to investigate the hemodynamic effects of an endovascular flow-diverter technique using multiple overlapping unc...

journal_title：Artificial organs

authors： Yeow SL,Leo HL

更新日期：2018-02-01 00:00:00

abstract：:In previous studies, we presented main strategies for suspending the rotor of a mixed-flow type (centrifugal and axial) ventricular assist device (VAD), originally presented by the Institute Dante Pazzanese of Cardiology (IDPC), Brazil. Magnetic suspension is achieved by the use of a magnetic bearing architecture in w...

journal_title：Artificial organs

authors： da Silva I,Horikawa O,Cardoso JR,Camargo FA,Andrade AJ,Bock EG

更新日期：2011-05-01 00:00:00

abstract：:Small-caliber decellularized xenografts with surface heparin coating are known to reduce in vivo thrombogenicity. This study was performed to examine whether heparin coating on the small-caliber decellularized xenografts would reduce macrophage infiltration and intimal hyperplasia. In a rabbit model of bilateral carot...

journal_title：Artificial organs

authors： Cai WW,Gu YJ,Wang XN,Chen CZ

更新日期：2009-06-01 00:00:00

abstract：:A rise in intracellular calcium concentration in erythrocytes has multiple effects on these cells. The purpose of this study was to determine the changes of calcium content in red blood cells (RBCs) and of echinocyte percentages in uremic patients during hemodialysis sessions. In 30 uremic patients under hemodialysis,...

journal_title：Artificial organs

authors： Agroyannis B,Kopelias I,Fourtounas C,Paraskevopoulos A,Tzanatos H,Dalamangas A,Mallas E

更新日期：2001-06-01 00:00:00

abstract：:Thousands of ventricular assist devices (VADs) currently provide circulatory support to patients worldwide, and dozens of heart pump designs for adults and pediatric patients are under various stages of development in preparation for translation to clinical use. The successful bench-to-bedside development of a VAD inv...

journal_title：Artificial organs

authors： Throckmorton AL,Patel-Raman SM,Fox CS,Bass EJ

更新日期：2016-06-01 00:00:00

abstract：:Atherosclerosis is accelerated in dialysis patients, but less is known about asymptomatic atherosclerosis and major risk factors in patients with different stages of chronic kidney disease (CKD). We compared intima media thickness (IMT) and plaque occurrence in the carotid arteries in 104 nondiabetic patients (stages ...

journal_title：Artificial organs

authors： Ekart R,Hojs R,Bevc S,Balon BP

更新日期：2008-03-01 00:00:00

abstract：:Patients with kidney failure can only survive with some form of kidney replacement (transplant or dialysis). Unfortunately, innovations in kidney replacement therapy lag behind many other medical fields. This study compiles expert opinions on candidate technologies for future kidney replacement therapies. A worldwide ...

journal_title：Artificial organs

authors： Pereira Cabral B,Bonventre JV,Wieringa F,Mota FB

更新日期：2020-07-22 00:00:00

abstract：:The major restrictions to the transport of solute and solvent across the peritoneum are the limited peritoneal blood flow, area and permeability. Recent investigations have demonstrated that several vasoactive drugs influence transport parameters. Isoproterenol, nitroprusside, dipyridamole and dopamine exemplify drugs...

journal_title：Artificial organs

authors： Maher JF

更新日期：1979-08-01 00:00:00

abstract：:This work presents results of preliminary studies concerning application of magnetic bearing in a ventricular assist device (VAD) being developed by Dante Pazzanese Institute of Cardiology-IDPC (São Paulo, Brazil). The VAD-IDPC has a novel architecture that distinguishes from other known VADs. In this, the rotor has a...

journal_title：Artificial organs

authors： Horikawa O,de Andrade AJ,da Silva I,Bock EG

更新日期：2008-04-01 00:00:00