journal
MENU ▼
Read by QxMD icon Read
search

Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs

journal
https://read.qxmd.com/read/30737599/a-new-technique-for-low-volume-continuous-sampling-of-spent-dialysate-a-validation-study
#1
Rafael Bueno Orcy, Maria Fernanda Antunes, Jean Pierre Oses, Maristela Böhlke
The measure of hemodialysis (HD) adequacy recommended nowadays by most guidelines, Kt/V-urea, presents significant drawbacks. Direct dialysis quantification (DDQ) through total dialysate collection (TDC), considered the gold standard measure of HD adequacy, is cumbersome, which precludes its widespread use in clinical practice. The present study aims to validate a low-volume continuous sampling of spent dialysate (CSSD). Cross-sectional study carried out at a university hospital. Throughout 4-h hemodialysis sessions, urea removal was measured by three DDQ methods: TDC, CSSD, and fractional sampling of dialysate (FSD)...
February 8, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30737598/a-case-of-heartmate-ii-implantation-in-non-dilated-left-ventricle
#2
Akiko Mano, Takashi Nishimura, Tomohiro Murata, Mitsuhiro Kawata, Shunei Kyo
Left ventricular assist device is an established therapeutic option for the patient with end-stage heart failure. Recently, durable continuous-flow devices have replaced earlier generation of pulsatile devices and their desirable features are accelerating the utilization of these devices. However, their powerful performance could sometimes induce unfavorable complications such as sucking, especially in not so dilated left ventricle. Special maneuvers such as cannula position and lower pump speed may be reasonable for patients with non-dilated left ventricular, however, those managements have not been established yet to date...
February 8, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30684042/regenerating-a-ventricular-cavity-during-left-ventricular-assist-device-implantation
#3
Ozge Altas, Tanil Ozer, Mustafa Mert Ozgur, Sabit Sarikaya, Kaan Kirali
Ten months after an ineffective percutaneous coronary stent placement, a 53-year-old patient was rehospitalized with NYHA functional class IV congestive heart failure, ischemic heart disease and left ventricular aneurysm. Echocardiography revealed thrombus formation in the left ventricle with apical aneurysm. Even though left ventricular assist device (LVAD) implantation improves quality of patients' lives with an increase of its overall use, it becomes more complicated in the presence of ventricular thrombus...
January 25, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30673894/risk-factors-associated-with-30-day-mortality-for-out-of-center-ecmo-support-experience-from-the-newly-launched-ecmo-retrieval-service
#4
Ilija Djordjevic, Anton Sabashnikov, A C Deppe, E Kuhn, K Eghbalzadeh, J Merkle, J Maier, C Weber, F Azizov, D Sindhu, T Wahlers
Out-of-hospital extracorporeal membrane oxygenation (ECMO) implantation and ECMO transport have become a growing field useful for emergent treatment of heart or lung failure with increasing number of centers launching such service. This study was designed to present risk factors predicting 30-day mortality for patients receiving ECMO support in a newly launched ECMO retrieval service. From 01/2015 till 01/2017 28 consecutive patients received ECMO support in peripheral hospitals using a miniaturized portable Cardiohelp System® (Maquet, Rastatt Germany) for heart, lung or heart/lung failure as a bridge-to-decision as a part of our newly launched ECMO retrieval service...
January 23, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30663032/deployment-of-stent-graft-in-an-excessively-higher-position-above-the-renal-artery-induces-a-flow-channel-to-the-aneurysm-in-chimney-endovascular-aortic-aneurysm-repair-an-in-vitro-study
#5
Kota Shukuzawa, Taku Akaoka, Mitsuo Umezu, Takao Ohki, Kiyotaka Iwasaki
We aimed to investigate the influences of the sealing length above the renal artery (RA) on gutter formation, non-apposed regions between the aortic wall, stent graft (SG), and chimney graft and incidence of flow channel to the aneurysm in chimney endovascular aortic aneurysm repair (Ch-EVAR) using a juxtarenal abdominal aortic aneurysm model. Neck diameter and length of the silicone model were 24 and 4 mm, respectively. In double Ch-EVAR configuration using Advanta V12, 12 combinations were tested three times with two sizes [28...
January 20, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30612213/clampless-aortic-punch-system-for-making-a-large-diameter-access-route-without-side-biting-clamp-a-preliminary-study
#6
Ryosuke Kowatari, Ikuo Fukuda, Tomonori Kawamura, Yasuyuki Suzuki
Although thoracic endovascular aneurysm repair (TEVAR) has been getting popularity as a less-invasive procedure, the treatment of thoracic aortic aneurysm with atherosclerotic aortic disease is still challenging. In hybrid TEVAR through the median sternotomy approach, side-biting clamp of the ascending aorta is often necessary for making an access route; however, it could cause embolic complication and aortic dissection. This study aimed to present the results of our preliminary study on the clampless aortic punch system (APS)...
January 5, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30610519/neurally-adjusted-ventilatory-assist-for-children-on-veno-venous-ecmo
#7
Jana Assy, Philippe Mauriat, Nadir Tafer, Sylvie Soulier, Issam El Rassi
NAVA may improve veno-venous ECMO weaning in children. This is a retrospective small series, describing for the first time proof-of-principle for the use of NAVA in children on VV ECMO. Six patients (age 1-48 months) needed veno-venous ECMO. Controlled conventional ventilation was replaced with assisted ventilation as soon as lung compliance improved, and could trigger initiation and termination of ventilation. NAVA was then initiated when diaphragmatic electrical activity (EAdi) allowed for triggering. NAVA was possible in all patients...
January 4, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30603819/oxygen-delivery-to-the-blood-stream-by-the-dialysis-fluid-during-continuous-renal-replacement-therapy-ex-vivo
#8
Yoshihiro Tange, Shigenori Yoshitake
Continuous renal replacement therapy (CRRT) maintains a balance in body water and electrolytes. CRRT supplies a higher quantity of fluid than intravenous fluid therapy along with simultaneous fluid withdrawal. We hypothesized that use of a high-oxygen-containing solution for high-volume fluid exchange would improve oxygenation in the blood during CRRT. To start with, we prepared a solution containing high oxygen. The objective of this study was to determine if this solution would increase the partial pressure of oxygen (pO2 ) in the blood more than that using a conventional solution during CRRT...
January 2, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30603818/re-do-mitral-valve-replacement-for-a-bioprosthetic-valve-with-central-transvalvular-leakage-in-a-patient-with-ischemic-cardiomyopathy-a-case-report
#9
Tatsuya Seki, Yasushige Shingu, Satoru Wakasa, Hiroki Katoh, Tomonori Ooka, Tsuyoshi Tachibana, Suguru Kubota, Yoshiro Matsui
Transvalvular leakage (TVL) of a prosthetic heart valve is not negligible regurgitant flow in patients with critically low contractile function. Although the opening function of prosthetic valves has been reported, its closing function is not well understood. A man in his 70 s had a history of mitral valve replacement (MVR) with a Magna Mitral® valve for ischemic mitral valve regurgitation. He presented with dyspnea 2 years postoperatively. Echocardiography showed moderate TVL. The pulmonary capillary wedge pressure and cardiac index were 37 mmHg and 1...
January 2, 2019: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30349955/omental-and-deep-inferior-epigastric-artery-perforator-flap-coverage-after-heart-transplantation-to-manage-wide-left-ventricular-assist-device-exposure-with-pocket-infection
#10
Yusuke Inatomi, Hideki Kadota, Keizo Kaku, Hiromichi Sonoda, Yoshihisa Tanoue, Akira Shiose
Infection is a serious potential complication after left ventricular assist device (LVAD) implantation. In general, infection of the device pocket, with device exposure, should be managed by early device removal and heart transplantation. However, because of the small number of donors in Japan, accelerating access to heart transplantation is often difficult and the LVAD can be widely exposed during the waiting period. We report our experience of successful heart transplantation in a patient with a widely exposed LVAD with pocket infection...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30291469/venovenous-extracorporeal-membrane-oxygenation-for-the-management-of-critical-airway-stenosis
#11
Yu Yamada, Toshihiro Ohata, Mutsunori Kitahara, Hisakazu Kohata, Junji Kumasawa, Michihiko Kohno
Venovenous extracorporeal membrane oxygenation (VV-ECMO) is used not only support gas transfer of patients suffering from respiratory failure, but also to manage hypoxic patients with critical airway obstruction during various procedures. We present a case in which we electively used VV-ECMO to facilitate tube placement and tracheal biopsy in a 67-year-old female with critical tracheal stenosis. The patient was transferred to our hospital for a surgical treatment after emergent tracheostomy for postoperative management of cerebral hemorrhage in right putamen...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30123956/histological-investigation-of-the-titanium-fiber-mesh-with-one-side-sealed-with-non-porous-material-for-its-application-to-the-artificial-heart-system
#12
Eiji Okamoto, Kyoko Arimura, Yoshinori Mitamura
In this study, we investigated tissue-inducing characteristics of a titanium fiber mesh disk with one surface sealed with a non-porous material. We used sintered titanium fiber mesh (Hi-Lex Co., Zellez™, Hyogo, Japan) having a titanium fiber diameter of 50 µm and volumetric porosity of the titanium fiber mesh of 87% with an average pore size of 200 µm. The titanium fiber mesh is disk-shaped with a dimeter of 5 mm and a thickness of 1.5 mm. One side of the titanium fiber mesh disk was sealed with silicone rubber adhesive that has no venomousness and the sealed titanium fiber mesh disks were implanted in rats under the skin of the dorsal region, and they were extracted in the 4th and 12th postoperative weeks...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30046934/oxygen-consumption-during-hypothermic-and-subnormothermic-machine-perfusions-of-porcine-liver-grafts-after-cardiac-death
#13
Noriyuki Morito, Hiromichi Obara, Naoto Matsuno, Shin Enosawa, Hiroyuki Furukawa
The use of grafts donated after cardiac death (DCD) would greatly contribute to the expansion of the donor organ pool. Machine perfusion (MP) is a promising technology to improve DCD liver grafts. Several perfusion technologies under various temperature and oxygenation conditions have been suggested and are still debated. It is important to confirm the relationship between oxygen consumption and organ conditions during MP. In this study, we analyzed oxygen consumption during oxygenated MP of porcine DCD liver grafts under different temperature conditions: hypothermic and subnormothermic...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30039457/thrombogenicity-and-long-term-cytokine-removal-capability-of-a-novel-asymmetric-triacetate-membrane-hemofilter
#14
Andreas Körtge, Thomas Wild, Benjamin Heskamp, Manuel Folk, Steffen Mitzner, Reinhold Wasserkort
Hemofilters applied in continuous renal replacement therapies (CRRTs) for the treatment of acute kidney injury must meet high standards in biocompatibility and permeability for middle and large molecules over extended treatment times. In general, cellulose-based membranes exhibit good biocompatibility and low fouling, and thus appear to be beneficial for CRRT. In this in vitro study, we compared a novel asymmetric cellulose triacetate (ATA) membrane with three synthetic membranes [polysulfone (PS), polyethersulfone (PES), and polyethylenimine-treated acrylonitrile/sodium methallyl sulfonate copolymer (AN69 ST)] regarding thrombogenicity and cytokine removal...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/30039455/the-angle-of-the-outflow-graft-to-the-aorta-can-affect-recirculation-due-to-aortic-insufficiency-under-left-ventricular-assist-device-support
#15
Kei Iizuka, Tomohiro Nishinaka, Daichi Akiyama, Hirohito Sumikura, Toshihide Mizuno, Tomonori Tsukiya, Yoshiaki Takewa, Kenji Yamazaki, Eisuke Tatsumi
Aortic insufficiency (AI) is a crucial complication during continuous-flow left ventricular assist device (LVAD) support. Our previous clinical study suggested that a larger angle between the outflow graft and the aorta (O-A angle) could cause AI progression. This study examined the effect of the O-A angle on the hemodynamics of AI under LVAD support in an acute animal experimental model. An LVAD was installed in seven calves, with the inflow cannula inserted from the LV apex and with the outflow graft sutured at the ascending aorta...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/29980955/efficient-co-2-removal-using-extracorporeal-lung-and-renal-assist-device
#16
Nozomi Takahashi, Taka-Aki Nakada, Shigeto Oda
We developed a novel system comprising acid infusion, membrane lung, and a continuous renal replacement therapy console for efficient CO2 removal at a low blood flow. To evaluate the new system, we used an ex vivo experimental model using swine blood. A liter of aliquoted blood adjusted to pH 7.25 and pCO2 65 mm Hg was mixed with acid (0, 10, or 20 mL of lactic or hydrochloric acid [1 mol/L]) and was immediately delivered to the system in a single pass. We collected blood samples at each point of the circuit and calculated the amount of CO2 eliminated by the membrane lung...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/29951931/risk-analysis-using-the-prognostic-nutritional-index-in-hemodialysis-dependent-patients-undergoing-cardiac-surgery
#17
Soki Kurumisawa, Koji Kawahito
The prognostic nutritional index is an effective prognostic tool used in gastrointestinal surgeries. However, its value has not been verified in cardiovascular surgeries. This study aimed to investigate its utility in hemodialysis-dependent patients undergoing cardiac surgery. We retrospectively reviewed data of 110 hemodialysis-dependent patients who underwent cardiac surgery between January 2006 and July 2016. 20 variables were evaluated for short- and long-term mortality prediction. Patients were divided into high and low prognostic nutritional index groups with values > 34 (n = 90) and ≤ 34 (n = 20), respectively...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/29943370/single-center-experience-of-the-bridge-to-bridge-strategy-using-the-nipro-paracorporeal-ventricular-assist-device
#18
Shuichi Yoshitake, Osamu Kinoshita, Kan Nawata, Yasuhiro Hoshino, Yoshifumi Itoda, Mitsutoshi Kimura, Haruo Yamauchi, Minoru Ono
Currently, we use the Nipro paracorporeal VAD (p-VAD) for initial short-term ventricular support, as a bridge to decision (BTD) or a bridge to candidacy (BTC) treatment, in Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) levels 1 and 2 patients. However, it is possible that compared to patients with primary implantable-VADs (P-iVAD), the bridge-to-bridge (BTB) patients are more likely to develop complications. This retrospective study used data from 24 consecutive BTB patients who were initially implanted with Nipro p-VAD as BTD or BTC treatments between April 2011 and March 2016, and subsequently underwent conversion to an i-VAD...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/29926240/cerebral-oximetry-for-cardiac-surgery-a-preoperative-comparison-of-device-characteristics-and-pitfalls-in-interpretation
#19
Kensuke Kobayashi, Tadashi Kitamura, Satoshi Kohira, Shinzo Torii, Toshiaki Mishima, Hirotoki Ohkubo, Yuki Tanaka, Akihiro Sasahara, Takuma Fukunishi, Yuki Ohtomo, Rihito Horikoshi, Yuta Murai, Kagami Miyaji
Regional cerebral oximetry using near-infrared spectroscopy devices is commonly used for detecting cerebral ischemia during cardiopulmonary bypass, and aim to avoid poor cerebral perfusion which may result in perioperative neurological impairment. Today, several devices that can detect cerebral ischemia are commercially available. Although these devices operate on the same measurement principles, their algorithms for detecting and calculating cerebral ischemia are different and no criteria for directly comparing values measured by such different devices exist...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://read.qxmd.com/read/29860680/rapid-onset-plasma-leakage-of-extracorporeal-oxygenation-membranes-possibly-due-to-hyperbilirubinemia
#20
Yoshiko Kida, Shinichiro Ohshimo, Michihito Kyo, Yuko Tanabe, Kei Suzuki, Koji Hosokawa, Nobuaki Shime
Extracorporeal membrane oxygenation (ECMO) is an emerging tool for supporting cardiopulmonary function in patients with cardiorespiratory failure or arrest. The oxygenator of the ECMO circuit requires effective oxygenation and removal of carbon dioxide from the blood. Major problems that can occur with the oxygenator include plasma leakage, one of the late-onset serious complications necessitating device replacement. However, the rapid onset of plasma leakage is rare. We present a 1-year-old boy with acute respiratory failure due to Pneumocystis and Aspergillus pneumonia...
December 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
journal
journal
33102
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"