keyword
MENU ▼
Read by QxMD icon Read
search

Total artificial heart

keyword
https://www.readbyqxmd.com/read/29761298/lumbar-muscle-atrophy-caused-by-harness-replacement-in-a-chronic-calf-model-of-total-artificial-heart-implantation
#1
Jamshid H Karimov, Kimberly A Such, Raymond Dessoffy, Kiyotaka Fukamachi
The postoperative care of animals implanted with mechanical circulatory support devices is complex. The standard of care requires continuous monitoring of hemodynamic parameters post implant, wound care, and maintenance of the animal's well-being, but also includes controlling the animal's biomechanics under conditions of continuous restraint and harnessing. In such studies, a harness provides secure fixation of the exteriorized device driveline and pressure lines and aids animal handling (lifting, position adjustment, and assistance with standing up)...
May 14, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29744939/heart-transplant-outcomes-in-patients-with-chagas-cardiomyopathy-in-the-united-states
#2
Rodolfo D Benatti, Sadeer G Al-Kindi, Fernando Bacal, Guilherme H Oliveira
BACKGROUND: Chagas cardiomyopathy (CC) is one of the chronic manifestations of Trypanosoma cruzi (T. cruzi) infection and is among the leading reasons for heart transplantation (HT) in Latin America. Chagas disease is also present in areas with large Hispanic communities in the United States. Our objective is to evaluate the outcomes of cardiac allograft recipients with the diagnosis of CC in the United States. METHODS AND RESULTS: We identified 25 adult patients with CC and 15,930 with idiopathic dilated cardiomyopathy (IDCMP) who underwent HT between 1987 and 2015...
May 9, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29703578/early-in-vivo-experience-with-the-pediatric-continuous-flow-total-artificial-heart
#3
Jamshid H Karimov, David J Horvath, Nicole Byram, Gengo Sunagawa, Barry D Kuban, Shengqiang Gao, Raymond Dessoffy, Kiyotaka Fukamachi
BACKGROUND: Heart transplantation in infants and children is an accepted therapy for end-stage heart failure, but donor organ availability is low and always uncertain. Mechanical circulatory support is another standard option, but there is a lack of intracorporeal devices due to size and functional range. The purpose of this study was to evaluate the in vivo performance of our initial prototype of a pediatric continuous-flow total artificial heart (P-CFTAH), comprising a dual pump with one motor and one rotating assembly, supported by a hydrodynamic bearing...
March 30, 2018: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29658860/pressure-support-breaths-triggered-by-total-artificial-heart-in-invasive-and-non-invasive-mechanical-ventilation
#4
Amit Prasad, Kai Singbartl, Behzad Soleimani, Christoph Brehm, Ali Ghodsizad
Because of the risks associated with extended mechanical ventilation, it is desirable to extubate patients as early as possible. However, weaning patients from mechanical ventilation too early has risks associated with it as well. Thus, it is important to note that in the two cases presented here, pressure-supported breaths were falsely triggered by a patient's a Syncardia® total artificial heart (TAH), influencing decisions about weaning the patient from mechanical ventilation.
March 2, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29616367/anatomical-study-of-the-cleveland-clinic-continuous-flow-total-artificial-heart-in-adult-and-pediatric-configurations
#5
Kiyotaka Fukamachi, Jamshid H Karimov, Nicole A Byram, Gengo Sunagawa, Raymond Dessoffy, Takuma Miyamoto, David J Horvath
The purpose of this study was to assess the smallest possible body sizes of patients in whom the Cleveland Clinic continuous-flow total artificial heart for adult (CFTAH) and pediatric configurations (P-CFTAH) can fit. One of the most critical dimensions is the vertebra-to-sternum distance at the junction of the right atrium to the inferior vena cava (V-S distance). Our previous CFTAH anatomical fitting study suggested that the CFTAH would fit patients of V-S distance ≥ 7.5 cm and the P-CFTAH of V-S distance ≥ 5...
April 3, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29603482/3d-image-fusion-of-whole-heart-dynamic-cardiac-mr-perfusion-and-late-gadolinium-enhancement-intuitive-delineation-of-myocardial-hypoperfusion-and-scar
#6
Jochen von Spiczak, Manoj Mannil, Sebastian Kozerke, Hatem Alkadhi, Robert Manka
BACKGROUND: Since patients with myocardial hypoperfusion due to coronary artery disease (CAD) with preserved viability are known to benefit from revascularization, accurate differentiation of hypoperfusion from scar is desirable. PURPOSE: To develop a framework for 3D fusion of whole-heart dynamic cardiac MR perfusion and late gadolinium enhancement (LGE) to delineate stress-induced myocardial hypoperfusion and scar. STUDY TYPE: Prospective feasibility study...
March 30, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29602426/use-of-berlin-heart-ventricular-assist-devices-as-a-total-artificial-heart
#7
Hideyuki Kato, Sanjiv K Gandhi
No abstract text is available yet for this article.
March 8, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29571345/total-artificial-heart-as-rescue-therapy-for-primary-graft-failure-in-an-infant
#8
Luke A Ziegler, Sandeep Sainathan, Victor O Morell, Mahesh S Sharma
An infant unable to be weaned from cardiopulmonary bypass after orthotopic heart transplantation was cannulated for extracorporeal membrane oxygenation. During the next 3 days, allograft failure and intracardiac thrombosis necessitated cardiectomy. To provide acute mechanical circulatory support, artificial atrial chambers were constructed with Gore-Tex conduits and PediMag centrifugal pumps were connected to each by Berlin Heart EXCOR cannulae. The PediMag pumps were subsequently exchanged for 10-mL Berlin Heart EXCOR pumps...
April 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29549728/cardio-supportive-devices-vrd-dcc-device-and-patches-for-advanced-heart-failure-a-review-summary-of-state-of-the-art-and-future-directions
#9
REVIEW
Muhammad Naveed, Lei Han, Ghulam Jilany Khan, Sufia Yasmeen, Reyaj Mikrani, Muhammad Abbas, Li Cunyu, Zhou Xiaohui
Congestive heart failure (CHF) is a complicated pathophysiological syndrome, leading cause of hospitalization as well as mortalities in developed countries wherein an irregular function of the heart leads to the insufficient blood supply to the body organs. It is an accumulative slackening of various complications including myocardial infarction (MI), coronary heart disease (CAD), hypertension, valvular heart disease (VHD) and cardiomyopathy; its hallmarks include hypertrophy, increased interstitial fibrosis and loss of myocytes...
June 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29546810/total-artificial-heart-implantation-in-a-young-marfan-syndrome-patient
#10
Prashant Rao, Jack B Keenan, Taufiek K Rajab, Samuel Kim, Richard Smith, Orazio Amabile, Zain Khalpey
INTRODUCTION: Cardiovascular complications represent the leading cause of morbidity and mortality in patients with Marfan syndrome. Here, we describe a unique case where a total artificial heart was implanted in a young Marfan syndrome woman. METHODS: A 22-year-old postpartum African American female with Marfan syndrome developed multiple severe valve dysfunction and biventricular failure that was refractory to medical management. She previously had a Bentall procedure for Type A aortic dissection and repair of a Type B dissection...
March 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29538013/advantages-of-integrating-pressure-regulating-devices-into-mechanical-circulatory-support-pumps
#11
David J Horvath, Jamshid H Karimov, Nicole A Byram, Barry D Kuban, Gengo Sunagawa, Nader Moazami, Kiyotaka Fukamachi
Control of mechanical circulatory support pump output typically requires that pressure-regulating functions be accomplished by active control of the speed or geometry of the device, with feedback from pressure or flow sensors. This article presents a different design approach, with a pressure-regulating device as the core design feature, allowing the essential control function of regulating pressure to be directly programmed into the hydromechanical design. We show the step-by-step transformation of a pressure-regulating device into a continuous-flow total artificial heart that passively balances left and right circulations without the need for pressure and flow sensors...
March 7, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29501558/integration-of-non-invasive-biometrics-with-sensory-analysis-techniques-to-assess-acceptability-of-beer-by-consumers
#12
Claudia Gonzalez Viejo, Sigfredo Fuentes, Kate Howell, Damir D Torrico, Frank R Dunshea
Traditional sensory tests rely on conscious and self-reported responses from participants. The integration of non-invasive biometric techniques, such as heart rate, body temperature, brainwaves and facial expressions can gather more information from consumers while tasting a product. The main objectives of this study were i) to assess significant differences between beers for all conscious and unconscious responses, ii) to find significant correlations among the different variables from the conscious and unconscious responses and iii) to develop a model to classify beers according to liking using only the unconscious responses...
March 5, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29448930/a-prediction-study-of-warfarin-individual-stable-dose-after-mechanical-heart-valve-replacement-adaptive-neural-fuzzy-inference-system-prediction
#13
Huan Tao, Qian Li, Qin Zhou, Jie Chen, Bo Fu, Jing Wang, Wenzhe Qin, Jianglong Hou, Jin Chen, Li Dong
BACKGROUND: It's difficult but urgent to achieve the individualized rational medication of the warfarin, we aim to predict the individualized warfarin stable dose though the artificial intelligent Adaptive neural-fuzzy inference system (ANFIS). METHODS: Our retrospective analysis based on a clinical database, involving 21,863 patients from 15 Chinese provinces who receive oral warfarin after the heart valve replacement. They were allocated into four groups: the external validation group (A group), the internal validation group (B group), training group (C group) and stratified training group (D group)...
February 15, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29444322/physiological-reactions-to-long-term-fishing-in-the-barents-sea
#14
B Netterstrøm, Å M Hansen, D Isaacson, A M Simonsen, P Weihe
Background: Fishing in distant waters for months may induce physiological stress. Aims: To assess the physiological stress reactions in fishermen working for 2-3 months continuously in 6-h shifts on trawlers in the Barents Sea. Methods: The crew of five trawlers fishing in the Barents Sea from January to April 2004 were invited to participate. In the week before and 5-7 days after the trip, the following measures were collected: salivary cortisol four times a day, 24-h urinary cortisol, blood pressure, heart rate, serum cholesterol, serum high-density lipoprotein (HDL-cholesterol), HbA1c (glycosylated haemoglobin) and weight...
March 27, 2018: Occupational Medicine
https://www.readbyqxmd.com/read/29374348/driver-electronics-design-and-control-for-a-total-artificial-heart-linear-motor
#15
Kristin Unthan, Elena Cuenca-Navalon, Benedikt Pelletier, Thomas Finocchiaro, Ulrich Steinseifer
For any implantable device size and efficiency are critical properties. Thus, a linear motor for a Total Artificial Heart was optimized with focus on driver electronics and control strategies. Hardware requirements were defined from power supply and motor setup. Four full bridges were chosen for the power electronics. Shunt resistors were set up for current measurement. Unipolar and bipolar switching for power electronics control were compared regarding current ripple and power losses. Here, unipolar switching showed smaller current ripple and required less power to create the necessary motor forces...
January 27, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29371040/total-artificial-heart-using-bilateral-paracorporeal-pulsatile-vads-in-an-8-2kg-child
#16
Ronald K Woods, Steve Kindel, Michael E Mitchell, Viktor Hraska, Robert A Niebler
We present a case report illustrating a novel method of placing a total artificial heart (TAH) in a small child.
January 22, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29365118/initial-in-vitro-testing-of-a-paediatric-continuous-flow-total-artificial-heart
#17
Kiyotaka Fukamachi, Jamshid H Karimov, David J Horvath, Gengo Sunagawa, Nicole A Byram, Barry D Kuban, Nader Moazami
OBJECTIVES: Mechanical circulatory support has become standard therapy for adult patients with end-stage heart failure; however, in paediatric patients with congenital heart disease, the options for chronic mechanical circulatory support are limited to paracorporeal devices or off-label use of devices intended for implantation in adults. Congenital heart disease and cardiomyopathy often involve both the left and right ventricles; in such cases, heart transplantation, a biventricular assist device or a total artificial heart is needed to adequately sustain both pulmonary and systemic circulations...
January 19, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29363348/reliability-of-internal-and-external-load-parameters-in-recreational-football-soccer-for-health
#18
Marco Beato, Mikael Jamil, Gavin Devereux
There is limited research focussed around the analysis of internal and external load parameters during football health programmes. The aim of this study was to assess the reliability of internal and external load parameters in this activity. Thrity subjects were enrolled (mean ± SDs; age = 43 ± 3 years, weight = 84 ± 14 kg, height = 176 ± 7 cm, BMI = 27.1 ± 3, VO2 max = 40.7 ± 3.4 ml. kg. min-1 ). The football matches (five a-side) took place on an artificial grass outdoor field (pitch size of 36 × 18...
April 2018: Research in Sports Medicine
https://www.readbyqxmd.com/read/29360282/left-ventricular-assist-device-patient-maintained-on-home-hemodialysis-a-novel-class-of-patients-to-the-home-dialysis-population
#19
Ramy M Hanna, Daniel Cruz, Umut Selamet, Huma Hasnain, Murray Kwon, Arnold Baas, James Wilson
Severe heart failure is increasingly being managed by cardiac transplantation, and in some cases mechanical support devices serve as destination therapies. Left ventricular assist devices (LVADs) were approved for destination therapy for end stage heart failure patients before the more advanced total artificial heart modality became available. One common complication of mechanical assist device placement is acute kidney injury. Historically, patients with mechanical support devices have had to have inpatient hemodialysis until combined heart kidney transplant...
January 23, 2018: Hemodialysis International
https://www.readbyqxmd.com/read/29349805/hybrid-continuous-flow-total-artificial-heart
#20
Carson Fox, Steven Chopski, Nohra Murad, Paul Allaire, Robert Mentzer, Joseph Rossano, Francisco Arabia, Amy Throckmorton
Clinical studies using total artificial hearts (TAHs) have demonstrated that pediatric and adult patients derive quality-of-life benefits from this form of therapy. Two clinically-approved TAHs and other pumps under development, however, have design challenges and limitations, including thromboembolic events, neurologic impairment, infection risk due to large size and percutaneous drivelines, and lack of ambulation, to name a few. To address these limitations, we are developing a hybrid-design, continuous-flow, implantable or extracorporeal, magnetically-levitated TAH for pediatric and adult patients with heart failure...
January 18, 2018: Artificial Organs
keyword
keyword
2190
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"