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Circulatory Support

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https://www.readbyqxmd.com/read/28095452/influence-of-mechanical-circulatory-support-on-endothelin-receptor-expression-in-human-left-ventricular-myocardium-from-patients-with-dilated-cardiomyopathy-dcm
#1
Florian Gärtner, Getu Abraham, Astrid Kassner, Daniela Baurichter, Hendrik Milting
BACKGROUND: In terminal failing hearts ventricular assist devices (VAD) are implanted as a bridge to transplantation. Endothelin receptor (ETR) antagonists are used for treatment of secondary pulmonary hypertension in VAD patients. However, the cardiac ETR regulation in human heart failure and during VAD support is incompletely understood. METHODS: In paired left ventricular samples of 12 dilated cardiomyopathy patients we investigated the density of endothelin A (ETA) and B (ETB) receptors before VAD implantation and after device removal...
2017: PloS One
https://www.readbyqxmd.com/read/28093806/outcomes-of-the-twelfth-international-conference-on-pediatric-mechanical-circulatory-support-systems-and-pediatric-cardiopulmonary-perfusion
#2
EDITORIAL
Emile A Bacha, Paul Chai, Akif Ündar
No abstract text is available yet for this article.
January 2017: Artificial Organs
https://www.readbyqxmd.com/read/28088363/seasonal-variations-of-u-s-mortality-rates-roles-of-solar-ultraviolet-b-doses-vitamin-d-gene-exp-ression-and-infections
#3
REVIEW
William B Grant, Harjit Pal Bhattoa, Barbara J Boucher
Death rates in the U.S. show a pronounced seasonality. The broad seasonal variation shows about 25% higher death rates in winter than in summer with an additional few percent increase associated with the Christmas and New Year's holidays. A pronounced increase in death rates also starts in mid-September, shortly after the school year begins. The causes of death with large contributions to the observed seasonality include diseases of the circulatory system; the respiratory system; the digestive system; and endocrine, nutritional, and metabolic diseases...
January 11, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28087175/continuous-improvement-in-outcome-after-heart-transplantation-long-term-follow-up-after-three-decades-of-experience
#4
Göran Dellgren, Andreas Westerlind, Hans Liden, Jakob Gäbel, Sven-Erik Bartfay, Entela Bollano, Erik Holmberg, Bert Andersson, Henrik Schersten, Kristjan Karason
AIMS: Heart transplantation (HTx) has become the standard treatment for patients with end-stage heart disease. We report on the long-term outcome after HTx at our centre and investigate trends in outcome over time. METHODS: During the period, between 1984 and 2014, a total of 610 HTx procedures were performed in 595 patients (median 48years; IQR 31-57years; range 24days-71years; mean 43years; 75% male) in our institution. Long-term outcome was investigated in the whole cohort, among children (n=76), bridged with mechanical circulatory support (MCS, n=131), re-transplanted (n=17), and concomitant kidney transplantation (n=12)...
January 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087105/left-ventricular-assist-device-outcomes-based-on-flow-configuration-and-pre-operative-left-ventricular-dimension-an-interagency-registry-for-mechanically-assisted-circulatory-support-analysis
#5
Palak Shah, Sarah Birk, Simon Maltais, John Stulak, Angelo Elmi, Francis D Pagani, Jennifer A Cowger
BACKGROUND: Axial configuration (AC) and centrifugal configuration (CC) left ventricular assist devices (LVAD) have different flow characteristics, and whether the interaction between device flow configuration and the pre-operative left ventricular internal diastolic diameter (LVIDD) mediates adverse events after LVAD implantation is unknown. METHODS: We queried 9,424 continuous-flow LVAD recipients who received LVADs from April 2008 to June of 2015 in the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS)...
December 16, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28087104/improved-outcomes-from-extracorporeal-membrane-oxygenation-versus-ventricular-assist-device-temporary-support-of-primary-graft-dysfunction-in-heart-transplant
#6
Koji Takeda, Boyangzi Li, Arthur R Garan, Veli K Topkara, Jiho Han, Paolo C Colombo, Maryjane A Farr, Yoshifumi Naka, Hiroo Takayama
BACKGROUND: Primary graft dysfunction (PGD) is one of the most common causes of early death after orthotopic heart transplantation. Mechanical circulatory support devices are required for severe forms of PGD. Venoarterial extracorporeal membrane oxygenation (VA-ECMO) and temporary ventricular assist device (VAD) support have both been reported to be useful for severe PGD. METHODS: Between January 2007 and December 2015, 597 patients received a heart transplant at our center...
December 23, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28079659/suspected-malignant-hyperthermia-in-the-setting-of-hypothermic-circulatory-arrest-for-type-a-aortic-dissection-repair-a-case-report
#7
Bryant Bunting, Joshua Knight, Stephen M McHugh
Malignant Hyperthermia (MH) is a life-threatening biochemical process of hypermetabolism brought about in susceptible individuals by a triggering drug or event. Type A aortic dissections are surgical emergencies requiring cardiopulmonary bypass and frequently deep hypothermic circulatory arrest. We present a case of suspected MH in a patient undergoing emergent repair of a type A aortic dissection. Upon arrival at our institution, the patient had multiple signs of MH. However, no known triggering agent had been administered...
January 11, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28079652/long-term-survival-and-causes-of-late-death-in-children-treated-with-extracorporeal-membrane-oxygenation
#8
Viktor von Bahr, Jan Hultman, Staffan Eksborg, Roxana Gerleman, Øyvind Enstad, Björn Frenckner, Håkan Kalzén
OBJECTIVE: Extracorporeal membrane oxygenation has been used in patients with severe circulatory or respiratory failure since the 1970s, but the knowledge on long-term survival in this group is scarce. The aim of the present study was to investigate the 10-year survival rates and causes of late death in children treated with extracorporeal membrane oxygenation. DESIGN: Single-center, retrospective cohort study. SETTING: Tertiary referral center for extracorporeal life support...
January 10, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28079557/dobutamine-aggravates-haemodynamic-deterioration-induced-by-pleural-effusion-a-randomised-controlled-porcine-study
#9
Kristian B Wemmelund, Anders H Sørensen, Viktor K Ringgård, Erik Sloth, Peter Juhl-Olsen
BACKGROUND: Pleural effusion is a common finding in critically ill patients and may contribute to circulatory instability and the need for inotropic support. OBJECTIVE: We hypothesised that dobutamine would affect the physiological determinants preload, afterload, contractility and changes of inferior vena cava characteristics during experimental pleural effusion. DESIGN: A randomised, controlled laboratory study. SETTING: Animal laboratory, conducted from March 2013 to May 2013...
January 11, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28073849/caregivers-of-patients-with-left-ventricular-assist-devices-possible-impacts-on-patients-mortality-and-interagency-registry-for-mechanically-assisted-circulatory-support-defined-morbidity-events
#10
Courtenay R Bruce, Charles G Minard, L A Wilhelms, Mackenzie Abraham, Javier Amione-Guerra, Linda Pham, Sherry D Grogan, Barry Trachtenberg, Martin L Smith, Brian A Bruckner, Jerry D Estep, Kristin M Kostick
BACKGROUND: How caregivers contribute to positive or negative outcomes for left ventricular assist device (LVAD) patients remains unclear. Our primary study objectives were to (1) identify caregiver support attributes through a retrospective chart review of social workers' psychosocial assessments for LVAD patients and (2) determine how these attributes associated with patients' post-LVAD placement mortality and Interagency Registry for Mechanically Assisted Circulatory Support-defined morbidity events...
January 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28070902/a-modified-lvad-technique-to-augment-caval-and-pulmonary-arterial-blood-flow-in-the-failing-fontan-circulation
#11
Michael F Swartz, Louis DiVincenti, Karen Smith, Robin Westcott, Kevin Belmont, William Harris, Francisco Gensini, George M Alfieris
BACKGROUND: There are minimal circulatory support options for patients with a failing Fontan. The Heartmate II (HMII) left ventricular assist device (Thoratec, Bedford, MA) in its packaged state cannot augment caval/pulmonary arterial blood flow. AIM: We hypothesized that a modified HMII pump could augment caval and pulmonary arterial blood flow. METHODS: A bifurcated ringed Gore-Tex graft (W. L. Gore & Associates, Flagstaff, AZ) was sewn to the HMII inflow, and the outflow graft transected and tapered from 16 mm to 8 mm in diameter...
January 9, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28069939/real-time-measurement-of-small-molecules-directly-in-awake-ambulatory-animals
#12
Netzahualcóyotl Arroyo-Currás, Jacob Somerson, Philip A Vieira, Kyle L Ploense, Tod E Kippin, Kevin W Plaxco
The development of a technology capable of tracking the levels of drugs, metabolites, and biomarkers in the body continuously and in real time would advance our understanding of health and our ability to detect and treat disease. It would, for example, enable therapies guided by high-resolution, patient-specific pharmacokinetics (including feedback-controlled drug delivery), opening new dimensions in personalized medicine. In response, we demonstrate here the ability of electrochemical aptamer-based (E-AB) sensors to support continuous, real-time, multihour measurements when emplaced directly in the circulatory systems of living animals...
January 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28066980/how-spain-reached-40-deceased-organ-donors-per-million-population
#13
REVIEW
R Matesanz, B Domínguez-Gil, E Coll, B Mahíllo, R Marazuela
With 40 donors and more than 100 transplant procedures per million population in 2015, Spain holds a privileged position worldwide in providing transplant services to its patient population. The Spanish success derives from a specific organizational approach to ensure the systematic identification of opportunities for organ donation and their transition to actual donation and to promote public support for the donation of organs after death. The Spanish results are to be highlighted in the context of the dramatic decline in the incidence of brain death and the changes in end-of-life care practices in the country since the beginning of the century...
January 9, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28062549/redo-procedures-for-degenerated-stentless-aortic-xenografts-and-the-role-of-valve-in-valve-transcatheter-techniques%C3%A2
#14
Herko Grubitzsch, Sebastian Zobel, Torsten Christ, Sebastian Holinski, Karl Stangl, Sascha Treskatsch, Volkmar Falk, Michael Laule
OBJECTIVES: This study evaluates reinterventions for degenerated stentless aortic xenografts. METHODS: Between 2010 and 2015, 52 consecutive patients (age 72.3 ± 9.7 years, EuroSCORE II 11.1 ± 8.9%) underwent reintervention for failed stentless aortic valves (60% porcine, 40% pericardial, 87% sub-coronary, 81% isolated/combined regurgitation). RESULTS: Based on age, EuroSCORE II, the presence of pulmonary hypertension, renal failure, a patent internal mammary artery graft and required concomitant procedures, the heart team assigned 25 patients to reoperation and 27 to valve-in-valve transcatheter aortic valve implantation (ViV-TAVI)...
January 6, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28043445/a-decade-of-experience-with-continuous-flow-left-ventricular-assist-devices
#15
Ranjit John, Christopher T Holley, Peter Eckman, Samit S Roy, Rebecca Cogswell, Laura Harvey, Sara Shumway, Kenneth Liao
The use of continuous-flow left ventricular assist devices (CF-LVADs) has revolutionized the landscape of mechanical circulatory support for patients with heart failure. Clinical trials are already testing the next generation of CF-LVADs. In this study, our objective was to review our long-term experience with the current generation of CF-LVADs, specifically, the HeartMate (HM) II (Thoratec Corp, Pleasanton, CA). In this single-center retrospective analysis, we evaluated the records of 278 consecutive patients who underwent a total of 302 HM II placements from June 2005 through June 2014...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28040370/benefit-of-extracorporeal-membrane-oxygenation-in-major-burns-after-stun-grenade-explosion-experience-from-a-single-military-medical-center
#16
Po-Shun Hsu, Yi-Ting Tsai, Chih-Yuan Lin, Shyi-Gen Chen, Niann-Tzyy Dai, Cheng-Jung Chen, Jia-Lin Chen, Chien-Sung Tsai
INTRODUCTION: Explosion injury is very common on the battlefield and is associated with major burn and inhalation injuries and subsequent high mortality and morbidity rates. Here we report six victims who suffered from explosion injuries caused by stun grenade; all were treated with extracorporeal membrane oxygenation (ECMO) as salvage therapy. This study was aimed to evaluate the indications and efficacy of ECMO in acute and critically ill major burn patients. METHODS: This was a retrospective analysis of six patients from Tri-Service General Hospital, National Defense Medical Center in Taiwan...
December 28, 2016: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28040188/effect-of-early-initiation-of-mechanical-circulatory-support-on-survival-in-cardiogenic-shock
#17
Mir B Basir, Theodore L Schreiber, Cindy L Grines, Simon F Dixon, Jeffrey W Moses, Brijeshwar S Maini, Akshay K Khandelwal, E Magnus Ohman, William W O'Neill
The role and timing of percutaneous mechanical circulatory support (MCS) devices in the treatment of acute myocardial infarction complicated by cardiogenic shock (AMICS) are not well understood. We sought to evaluate patient characteristics and predictors of outcomes in patients presenting with AMICS supported with an axial flow percutaneous MCS device; 287 consecutive unselected patients enrolled in the catheter-based ventricular assist device registry presenting with AMICS who underwent percutaneous coronary intervention (PCI) were included in this analysis...
December 18, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28038817/low-partial-pressure-of-end-tidal-carbon-dioxide-predicts-left-ventricular-assist-device-implantation-in-patients-with-advanced-chronic-heart-failure
#18
Osamu Seguchi, Eriko Hisamatsu, Atsushi Nakano, Seiko Nakajima, Kensuke Kuroda, Takuya Watanabe, Takuma Sato, Haruki Sunami, Masanobu Yanase, Hiroki Hata, Toshimitsu Hamasaki, Tomoyuki Fujita, Junjiro Kobayashi, Takeshi Nakatani, Masafumi Kitakaze, Norihide Fukushima
BACKGROUND: This study aimed to clarify the prognostic impact of partial pressure of end-tidal carbon dioxide (PETCO2) in patients with advanced chronic heart failure (HF). METHODS: Forty-eight patients (mean age 43.1±11.9years, 32 males) with chronic HF (44 with non-ischemic and 4 with ischemic cardiomyopathy) were prospectively enrolled. Echocardiography, blood tests, pulmonary function testing, and PETCO2 measurements were performed as noninvasive tests, whereas right heart catheterization and arterial blood gas analysis were conducted as invasive tests...
December 21, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28035714/gfp-tagged-apolipoprotein-e-a-useful-marker-for-the-study-of-hepatic-lipoprotein-egress
#19
Constantin N Takacs, Ursula Andreo, Rachel L Belote, Joan Pulupa, Margaret A Scull, Caroline E Gleason, Charles M Rice, Sanford M Simon
Apolipoprotein E (ApoE), a component of very-low-density and high-density lipoproteins, participates in many aspects of lipid transport in the bloodstream. Underscoring its important functions, ApoE isoforms have been associated with metabolic and circulatory disease. ApoE is also incorporated into hepatitis C virus (HCV) particles, and promotes their production and infectivity. Live cell imaging analysis of ApoE behavior during secretion from producing cells thus has the potential to reveal important details regarding lipoprotein and HCV particle biogenesis and secretion from cells...
December 30, 2016: Traffic
https://www.readbyqxmd.com/read/28033607/extracorporeal-membrane-oxygenation-in-adults-variants-complications-during-therapy-and-the-role-of-radiological-imaging
#20
Laura Beck, Matthias C Burg, Walter Heindel, Christoph Schülke
Background Extracorporeal membrane oxygenation (ECMO) and extracorporeal life support (ECLS) as respiratory and circulatory assist therapies are gaining in importance in the treatment of critically ill patients. Depending on the place of cannulation - veno-venous for ECMO and veno-arterial for ECLS - distinct changes in hemodynamics will occur. In this review we describe the different types of ECMO and ECLS systems, the typical cannula placement and frequent complications under therapy. The most suitable imaging modalities will be presented and typical hemodynamic pitfalls in contrast-enhanced computed tomography or angiography will be elucidated...
December 29, 2016: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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