Internal jugular vein cannulation with two silicone rubber catheters: a new and safe temporary vascular access for hemodialysis. Thirty months' experience.

abstract：:Oxidative stress is crucial in red blood cell (RBC) damage induced by activated neutrophils in in vitro experiments. The aim of the study was to evaluate whether the bioincompatibility phenomena occurring during hemodialysis (HD) (where neutrophil activation with increased free radical production is well documented) m...

journal_title：Artificial organs

authors： Lucchi L,Bergamini S,Botti B,Rapanà R,Ciuffreda A,Ruggiero P,Ballestri M,Tomasi A,Albertazzi A

更新日期：2000-01-01 00:00:00

abstract：:The specific timing for discontinuing renal replacement therapy (RRT) in acute kidney injury (AKI) patients is debatable. The predictive abilities of variables at the time of discontinuation of RRT for the long-term prognoses of patients have not been explored. This study aimed to explore the prognostic factors upon d...

journal_title：Artificial organs

authors： Yang T,Sun S,Lin L,Han M,Liu Q,Zeng X,Zhao Y,Li Y,Su B,Huang S,Yang L

更新日期：2017-12-01 00:00:00

abstract：:Secondary flow in the centrifugal blood pump helps to enhance the washout effect and to minimize thrombus formation. On the other hand, it has an adverse effect on pump efficiency. Excessive secondary flow may induce hemolytic effects. Understanding the secondary flow is thus important to the design of a compact, effi...

journal_title：Artificial organs

authors： Watanabe N,Masuda T,Iida T,Kataoka H,Fujimoto T,Takatani S

更新日期：2005-01-01 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：:Clinically, the percutaneous transcatheter aortic valve (TAV) has been reported to be deformed in a noncircular configuration after its implant. The deformation is universal and various, and it leads to serious leakage and durability problems. Even in the same deformation, the leaflets made in different tissue thickne...

journal_title：Artificial organs

authors： Feng W,Yang X,Liu Y,Fan Y

更新日期：2017-08-01 00:00:00

abstract：:The therapy of terminal heart failure with left ventricular assist devices has become a standard in cardiac surgery. Yet the surgical implantation technique is not standardized and differs from center to center. Complications associated with left ventricular assist device (LVAD) inflow cannula placement are thrombosis...

journal_title：Artificial organs

authors： Hanke JS,Krabatsch T,Rojas SV,Deniz E,Ismail I,Martens A,Shrestha M,Haverich A,Netuka I,Schmitto JD

更新日期：2017-03-01 00:00:00

abstract：:Although current continuous-flow total artificial hearts (CFTAHs) are much smaller than previous models, venous kinking may still occur after device implantation, especially in smaller animals. By inserting a self-expanding stent at the site of venous narrowing in a sheep model implanted with a CFTAH, we were able to ...

journal_title：Artificial organs

authors： Tuzun E,Parnis S,Rios J,Winkler JA,Cohn WE

更新日期：2011-07-01 00:00:00

abstract：:The characteristic depressed hemodynamic state and gradually declining circulatory function in Fontan patients necessitates alternative postoperative management strategies incorporating a system level approach. In this study, the single-ventricle Fontan circulation is modeled by constructing a practical in vitro bench...

journal_title：Artificial organs

authors： Dur O,Lara M,Arnold D,Vandenberghe S,Keller BB,DeGroff C,Pekkan K

更新日期：2009-11-01 00:00:00

abstract：:Activated clotting time (ACT) is the most commonly used laboratory test to control the heparin effect during extracorporeal techniques. The study was undertaken in order to test in vitro the influence of heparin, platelet count, hematocrit, platelet fragmentation, and platelet activation on ACT. Blood was drawn from v...

journal_title：Artificial organs

authors： Girardi L,Sudi K,Muntean W

更新日期：2000-07-01 00:00:00

abstract：:Growth factors and morphogens secreted by bone marrow mesenchymal stem cells (BMSCs) of bone marrow fluid may promote tooth regeneration. Accordingly, a tissue engineering approach was utilized to develop an economical strategy for obtaining the growth factors and morphogens from BMSCs. Unerupted second molar tooth bu...

journal_title：Artificial organs

authors： Kuo TF,Lin HC,Yang KC,Lin FH,Chen MH,Wu CC,Chang HH

更新日期：2011-02-01 00:00:00

abstract：:Possible routes for water and salt flow and the most likely theories that describe coupling between water and salt flow across leaky epithelia are presented. The osmotic theories seem the most likely ones. However, several of the theories have weaknesses that render them unsatisfactory, in particular because of the po...

journal_title：Artificial organs

authors： Whittembury G,Carpi-Medina P,González E,Linares H

更新日期：1987-12-01 00:00:00

abstract：:Capillary membrane filters are devices commonly used for plasmapheresis and recirculating detoxification systems, including plasmaseparation units. Besides clinical trials and case reports, research on plasmafiltration techniques is carried out using in vitro systems. Notably, such hemoperfused in vitro systems requir...

journal_title：Artificial organs

authors： Unger JK,Haltern C,Dohmen B,Rossaint R

更新日期：2003-07-01 00:00:00

abstract：:For the development of a totally implantable ventricular assist system (VAS), we have been developing the vibrating flow pump (VFP), which can generate oscillated blood flow with a relative high frequency (10-50 Hz) for a totally implantable system. In this study, the effects of left ventricular assistance with this u...

journal_title：Artificial organs

authors： Nitta S,Yambe T,Kobayashi S,Hashimoto H,Yoshizawa M,Mastuki H,Tabayashi K,Takeda H

更新日期：1999-01-01 00:00:00

abstract：:The effects of pyridoxalated hemoglobin polyoxyethylene conjugate (PHP) and other hemoglobin-related substances on arterial blood pressure (ABP) and heart rate (HR) were examined. Infusion of PHP and other hemoglobin-related substances elevated ABP and increased HR. The degree of the increase in ABP and HR did not dif...

journal_title：Artificial organs

authors： Kida Y,Maeda M,Iwata S,Iwashita Y,Goto K,Nishi K

更新日期：1995-02-01 00:00:00

abstract：:A magnetically levitated (maglev) centrifugal blood pump (CBP), intended for use as a ventricular assist device, needs to be highly durable and reliable for long-term use without any mechanical failure. Furthermore, maglev CBPs should be small enough to be implanted into patients of various size and weight. We have de...

journal_title：Artificial organs

authors： Asama J,Shinshi T,Hoshi H,Takatani S,Shimokohbe A

更新日期：2006-03-01 00:00:00

abstract：:Five hundred and eighty homograft valves have been inserted into the aortic position as isolated valve replacements, and followed up for 7--14 years. After ten years 90% of frozen homografts, 80% of autografts and 70% of freeze-dried homografts were free of valve-related death. There was only one embolism reported giv...

journal_title：Artificial organs

authors： Bodnar E,Wain WH,Martelli V,Ross DN

更新日期：1980-02-01 00:00:00

abstract：:The effect of blood hematocrit (HCT) on a noninvasive flow estimation algorithm was examined in a centrifugal implantable rotary blood pump (iRBP) used for ventricular assistance. An average flow estimator, based on three parameters, input electrical power, pump speed, and HCT, was developed. Data were collected in a ...

journal_title：Artificial organs

authors： Malagutti N,Karantonis DM,Cloherty SL,Ayre PJ,Mason DG,Salamonsen RF,Lovell NH

更新日期：2007-01-01 00:00:00

abstract：:Infusion into rats of the polycation hexadimethrine (HDM) leads to onset of massive proteinuria, which recovers when the infusion is stopped. Several lines of evidence indicate that the proteinuria results from binding of HDM to polyanions of the glomerular filter, with neutralization of shielding of their charges. To...

journal_title：Artificial organs

authors： Hunsicker LG,Bertolatus JA

更新日期：1987-12-01 00:00:00

abstract：:Effect of hemodialysis (HD) on some indices of immune response was studied in nine chronic uremics. Total lymphocyte, OKT4+, and OKT8+ cell numbers significantly decreased during the first 20 min of HD, and they were decreased till the third hour of the procedure, whereas the OKT4+/OKT8+ cell number ratio did not chan...

journal_title：Artificial organs

authors： Tchórzewski H,Luciak M,Trznadel K,Majewska E,Pokoca L

更新日期：1989-06-01 00:00:00

abstract：:The development of a ventricular assist device is depicted. The seven subprograms that make up the project are described briefly. Results obtained during the clinical assay showed that the new design of the input cannula working as a false auricle provides better efficiency, as well as a certain level of autoregulatio...

journal_title：Artificial organs

authors： del Cañizo JF,Antoranz JC,Desco MM,Alvarez-Valdivielso JM,Fernandez-Caleya D,López M,Garcia-Barreno P,Duarte J

更新日期：1994-07-01 00:00:00

abstract：:We reviewed the role of the BioMedicus pump in the reduction of neurologic complications following the repair of Type 1 and Type 2 thoracoabdominal aortic aneurysms. Since 1991, we have used several different methods for the repair of thoracoabdominal aortic aneurysms including simple cross-clamping, selective use of ...

journal_title：Artificial organs

authors： Safi HJ

更新日期：1996-06-01 00:00:00

abstract：:This study probed the changes of keratocytes cultured under simulated microgravity. Keratocytes were isolated from rabbit corneas using collagenase digestion method. Cells were seeded in a 55-mL capacity high-aspect-ratio vessel (HARV) of rotary cell culture system (RCCS) at a density of 1 x 10(4) cells/mL. Dehydrated...

journal_title：Artificial organs

authors： Chen J,Chen R,Gao S

更新日期：2007-09-01 00:00:00

abstract：:The PI3K/Akt signaling pathway has been implicated in playing an important role in platelet activation during hemostasis and thrombosis involving platelet-matrix interaction and platelet aggregation. Its role in non-physiological shear stress (NPSS)-induced platelet activation relevant to high-shear blood contacting m...

journal_title：Artificial organs

authors： Chen Z,Li T,Kareem K,Tran D,Griffith BP,Wu ZJ

更新日期：2019-09-01 00:00:00

abstract：:The sensitivity of liver allografts to even minimal periods of ischemia currently limits the duration of hepatic preservation prior to liver transplantation. This study evaluates the role of activated carbon hemoperfusion (ACH) for assisting the recovery of canine livers ischemically damaged by a 20-min occlusion of t...

journal_title：Artificial organs

authors： Toledo-Pereyra LH

更新日期：1985-08-01 00:00:00

abstract：:Continuous-flow left ventricular assist devices (LVADs) reduce peak systolic flow, increase diastolic flow, and eliminate pulsatility of circulation. Altered blood flow may lead to a change in end-organ perfusion. Analysis of the flow dynamics of the arteries of end organs, such as the brain, may indicate whether an o...

journal_title：Artificial organs

authors： Karahan M,Kocabeyoglu SS,Kervan U,Sert DE,Aygun E,Tola M,Demirkan B,Mungan S,Kursun O,Catav Z,Pac M

更新日期：2020-05-01 00:00:00

abstract：:The vibrating flow pump (VFP) can generate high frequency oscillated blood flow. Because of the high frequency driving with short stroke volume, the pump system can be small. The disposable type VFP (D-VFP) was developed for use for extracorporeal circulation. The electromagnetic actuator was detached from the vibrati...

journal_title：Artificial organs

authors： Kobayashi S,Nitta S,Yambe T,Sonobe T,Naganuma S,Hashimoto H

更新日期：1997-07-01 00:00:00

abstract：:A pneumatically driven artificial heart with a tubular silicone rubber membrane and disc valves was used for functional heart replacement in the paracorporeal mode. A fluidic drive system allows adjustment of the heart rate, positive and negative pressures and systole/diastole ratio. Since August, 1977, the artificial...

journal_title：Artificial organs

authors： Turina MT,Bosio R,Senning A

更新日期：1978-08-01 00:00:00

abstract：:In this study, we have developed an implantable electronics unit (IEU) for driving an undulation pump-left ventricular assist device (UP-LVAD). The IEU consists of a pump driver, three series-connected lithium ion batteries (1800 mAh), a charger, and a transcutaneous information transmission system. These electronic s...

journal_title：Artificial organs

authors： Okamoto E,Makino T,Inoue Y,Tanaka S,Yasuda T,Nakamura M,Saito I,Abe Y,Chinzei T,Isoyama T,Mochiizuki S,Imachi K,Mitamura Y

更新日期：2006-05-01 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：:Twelve patients, 8 male and 4 female, aged from 26 to 70 years were studied. They were on hemodialysis (HD) 4 h three times weekly with cuprophan hollow fiber dialyzers (Gambro 120M) and dialysate containing 35 mEq/L of acetate. The study compares two random HD sessions on each patient. Sixty minutes prior to one rand...

journal_title：Artificial organs

authors： Grekas D,Alivanis P,Karamouzis M,Pyrpasopoulos M,Tourkantonis A

更新日期：1989-10-01 00:00:00