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https://www.readbyqxmd.com/read/27702831/reduction-of-incor%C3%A2-driveline-infection-rate-with-silicone-at-the-driveline-exit-site
#1
Daniele Camboni, Matthaeus Zerdzitzki, Stephan Hirt, René Tandler, Michael Weyand, Christof Schmid
OBJECTIVES: A silicone interface at skin level of left ventricular assist device (LVAD) may reduce the risk of driveline (DL) exit site infections when compared with other materials (e.g. velour). The purpose of this study was to evaluate the rate of DL exit site infection according to the presence of silicone or velour at the exit site with the redesigned INCOR, facilitating the positioning of silicone at the exit site. METHODS: The rate of DL exit site infection and overall survival were compared between the two groups (silicone group, n = 16/velour group, n = 24) with 1-year follow-up postimplantation...
October 4, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27645002/risk-adjusted-monitoring-of-time-to-event-in-the-presence-of-long-term-survivors
#2
Jocelânio W Oliveira, Dione M Valença, Pledson G Medeiros, Magaly Marçula
The use of control charts for monitoring schemes in medical context should consider adjustments to incorporate the specific risk for each individual. Some authors propose the use of a risk-adjusted survival time cumulative sum (RAST CUSUM) control chart to monitor a time-to-event outcome, possibly right censored, using conventional survival models, which do not contemplate the possibility of cure of a patient. We propose to extend this approach considering a risk-adjusted CUSUM chart, based on a cure rate model...
September 20, 2016: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/27541176/two-dimensional-superconductivity-emerged-at-monatomic-bi-2-square-net-in-layered-y2o2bi-via-oxygen-incorporation
#3
Ryosuke Sei, Suguru Kitani, Tomoteru Fukumura, Hitoshi Kawaji, Tetsuya Hasegawa
Discovery of layered superconductors such as cuprates and iron-based compounds has unveiled new science and compounds. In these superconductors, quasi-two-dimensional layers including transition metal cations play principal role in the superconductivity via carrier doping by means of aliovalent-ion substitution. Here, we report on a two-dimensional superconductivity at 2 K in ThCr2Si2-type layered oxide Y2O2Bi possessing conducting monatomic Bi(2-) square net, possibly associated with an exotic superconductivity...
September 7, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27465093/surgical-treatment-of-mediastinitis-with-omentoplasty-in-ventricular-assist-device-patients-report-of-referral-center-experience
#4
Marina Pieri, Marcus Müller, Anna Mara Scandroglio, Panagiotis Pergantis, Alexandra Kretzschmar, Friedrich Kaufmann, Volkmar Falk, Thomas Krabatsch, Georg Arlt, Marian Kukucka, Evgenij Potapov
Mediastinitis is more frequent in patients with implantable ventricular assist devices (VAD) than in other cardiac surgery patients and carries significant mortality. We report our experience with a stepwise approach including aggressive debridement, jet lavage, vacuum assisted closure (VAC) dressing and finally coverage with well-vascularized and immune active omental flaps in VAD patients with infective mediastinitis.We retrospectively collected and analyzed data of patients with continuous flow VAD who underwent plasty with the omental flap due to mediastinitis at Deutsches Herzzentrum Berlin beween 1 January 2008 and 30 October 2015 ...
July 26, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/26786608/gene-mutations-of-platelet-glycoproteins-and-response-to-tirofiban-in-acute-coronary-syndrome
#5
Antonio de Padua Mansur, Alessandra Roggerio, Júlio Yoshio Takada, Pérola Michelle Vasconcelos Caribé, Solange Desirée Avakian, Célia Maria Cassaro Strunz
CONTEXT AND OBJECTIVES: Glycoprotein inhibitors (abciximab, eptifibatide and tirofiban) are used in patients with unstable angina and non-ST-segment elevation myocardial infarction before percutaneous coronary intervention. Of these, tirofiban is the least effective. We hypothesized that the response to tirofiban might be associated with glycoprotein gene mutations. DESIGN AND SETTING: Prospective study at Emergency Unit, Heart Institute (InCor), University of São Paulo...
January 19, 2016: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/26541278/low-incidence-of-gastrointestinal-bleeding-and-pump-thrombosis-in-patients-receiving-the-incor-lvad-system-in-the-long-term-follow-up
#6
MULTICENTER STUDY
Attilio Iacovoni, Paolo Centofanti, Matteo Attisani, Alessandro Verde, Amedeo Terzi, Michele Senni, Massimo Maiani, Andrea Baronetto, Ugo Livi, Maria Frigerio, Mauro Rinaldi
BACKGROUND: Left ventricular assist device (LVAD) implantation improves survival and quality of life in patients with advanced heart failure (HF). Despite these advantages, LVADs are not free from risks. Among all adverse events (AE), pump thrombosis and bleeding, especially of the gastrointestinal (GI) tract, have been reported to occur with increasing frequency in some CF-LVADs. The INCOR LVAD system is a third-generation, continuous flow, axial pump with active magnetic levitation, avoiding the potential downsides of mechanical bearings...
October 2015: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/26458327/registry-of-early-latecomer-patients-with-acute-st-segment-elevation-myocardial-infarction-at-the-instituto-nacional-cardiovascular-incor-peru
#7
Manuel Alberto Chacón-Diaz, Jorge Alonso Barrios-Escalante, Daniel Espinoza-Alva
OBJECTIVE: To assess the features of asymptomatic patients with acute ST segment elevation myocardial infarction who presents to the emergency with more than 12h of evolution, and if there is a benefit of an invasive versus medical therapy. METHODS: Retrospective, cohort study from January 2012 to December 2014, we compare the outcomes at 6 and 12 months of follow up of the invasive group versus the conservative group. RESULTS: There were no differences in outcomes at 12 months between an invasive versus a conventional strategy; but, looking at the reperfusion state, we found more risk of death and heart failure at 12 months in the no-reperfused group versus the reperfused group (40% versus 0%, OR: 2, CI: 1...
April 2016: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/26266480/effective-bone-regeneration-using-thermosensitive-poly-n-isopropylacrylamide-grafted-gelatin-as-injectable-carrier-for-bone-mesenchymal-stem-cells
#8
Zhiwei Ren, Yang Wang, Shiqing Ma, Shun Duan, Xiaoping Yang, Ping Gao, Xu Zhang, Qing Cai
In this study, thermosensitive poly(N-isopropylacrylamide) (PNIPAAm) was grafted onto gelatin via atom transfer radical polymerization (ATRP). The chemical structure of PNIPAAm-grafted gelatin (Gel-PNIPAAm) was confirmed by XPS, ATR-IR, and (1)H NMR characterizations. Gel-PNIPAAm aqueous solution exhibited sol-to-gel transformation at physiological temperature, and was studied as injectable hydrogel for bone defect regeneration in a cranial model. The hydrogel was biocompatible and demonstrated the ability to enhance bone regeneration in comparison with the untreated group (control)...
September 2, 2015: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/26011007/is-implantation-of-a-left-ventricular-assist-device-in-patients-with-critical-or-impending-cardiogenic-shock-an-absolute-contraindication-looking-back-at-our-past-experience-trying-to-identify-contraindicative-risk-factors
#9
Angelo Maria Dell'Aquila, Stefan R B Schneider, Paolo Risso, Henryk Welp, David G Glockner, Sebastian Alles, Jürgen R Sindermann, Mirela Scherer
Poor survival has been demonstrated after ventricular assist device (VAD) implantation for Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) profile 1 and 2 patients compared with more stable levels. However, risk factors within this high-risk cohort have not been determined so far. The aim of the present study was to identify risk factors associated with this very high mortality rate. Between February 1993 and January 2013, 298 patients underwent VAD implantation in our institution...
December 2015: Artificial Organs
https://www.readbyqxmd.com/read/25879717/domino-aryne-precursor-efficient-construction-of-2-4-disubstituted-benzothiazoles
#10
Jiarong Shi, Dachuan Qiu, Juan Wang, Hai Xu, Yang Li
An aryne precursor with a potential to perform domino aryne chemistry was proposed and synthesized. The reaction of this reagent with benzothioamide derivatives could afford 2,4-disubstituted benzothiazole with sequential incorporation of C-S, C-N, and C-C bonds on the consecutive three positions of the aryne precursor.
May 6, 2015: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/25806616/successful-interventional-thrombectomy-of-a-basilar-artery-thrombus-in-a-long-term-lvad-patient
#11
Matthaeus Zerdzitzki, Christof Schmid, Stephan Hirt, Christina Wendl, Felix Schlachetzki, Daniele Camboni
Cerebral thromboembolism builds the Achilles heel for patients on left ventricular support (LVAD). Thrombolytic therapy is usually contraindicated considering the increased risk of intracranial hemorrhage in patients with LVAD under therapeutic oral anticoagulation with concomitant platelet inhibition. We report on an alternative approach to this dilemma. On day 1,091 of LVAD support (INCOR Berlin Heart), a 69 year-old male patient was admitted to a rural hospital unconscious with a left-sided hemiplegia. Cerebral computed tomography (CT) with CT angiography revealed a thromboembolic distal basilar artery occlusion...
May 2015: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/25131052/fungal-infection-by-mucorales-order-in-lung-transplantation-4-case-reports
#12
F M F D Neto, P C L B Camargo, A N Costa, R H O B Teixeira, R M Carraro, J E Afonso, S V Campos, M N Samano, L M Fernandes, L G Abdalla, P M Pêgo-Fernandes
Mucorales is a fungus that causes systemic, highly lethal infections in immunocompromised patients. The overall mortality of pulmonary mucormycosis can reach 95%. This work is a review of medical records of 200 lung transplant recipients between the years of 2003 and 2013, in order to identify the prevalence of Mucorales in the Lung Transplantation service of Heart Institute (InCor), Hospital das Clínicas da Universidade de São Paulo, Brazil, by culture results from bronchoalveolar lavage and necropsy findings...
July 2014: Transplantation Proceedings
https://www.readbyqxmd.com/read/25076179/investigation-route-of-the-coronary-patient-in-the-public-health-system-in-curitiba-s%C3%A3-o-paulo-and-in-incor-impact-study
#13
Juliano J Cerci, Evelinda Trindade, Daniel Preto, Rodrigo Julio Cerci, Pedro A Lemos, Luiz Antonio Machado Cesar, Luís Preto, Luiz Stinghen, Cátia Martinez, José Claudio Meneghetti
BACKGROUND: The investigation of stable coronary artery disease (CAD) and its treatment depend on risk stratification for decision-making on the need for cardiac catheterization and revascularization. OBJECTIVE: To analyze the procedures used in the diagnosis and invasive treatment of patients with CAD, at the Brazilian Unified Health System (SUS) in the cities of Curitiba, São Paulo and at InCor-FMUSP. METHODS: Retrospective, descriptive, observational study of the diagnostic and therapeutic itineraries of the Brazilian public health care system patient, between groups submitted or not to prior noninvasive tests to invasive cardiac catheterization...
September 2014: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/24935314/the-impact-of-pretransplantation-urgency-status-and-the-presence-of-a-ventricular-assist-device-on-outcome-after-heart-transplantation
#14
D Reser, G M Fröhlich, B Seifert, M L Lachat, S Jacobs, F Enseleit, F Ruschitzka, V Falk, M J Wilhelm
INTRODUCTION: There are conflicting reports on the posttransplantation morbidity and mortality of patients listed urgently and/or supported by a ventricular assist device (VAD). The aim of this study was to analyze the outcomes with regard to pretransplantation condition (elective, urgent, VAD). METHODS: All adult recipients between January 1, 2005, and October 31, 2012, were included. Demographics; preoperative, operative, and postoperative data; outpatient follow-up; and donor characteristics were collected and analyzed...
June 2014: Transplantation Proceedings
https://www.readbyqxmd.com/read/24884921/left-ventricular-support-adjustment-to-aortic-valve-opening-with-analysis-of-exercise-capacity
#15
Daniele Camboni, Tobias J Lange, Patrycja Ganslmeier, Stephan Hirt, Bernhard Flörchinger, York Zausig, Leopold Rupprecht, Michael Hilker, Christof Schmid
BACKGROUND: LVAD speed adjustment according to a functioning aortic valve has hypothetic advantages but could lead to submaximal support. The consequences of an open aortic valve policy on exercise capacity and hemodynamics have not yet been investigated systematically. METHODS: Ambulatory patients under LVAD support (INCOR®, Berlin Heart, mean support time 465 ± 257 days, average flow 4.0 ± 0.3 L/min) adjusted to maintain a near normal aortic valve function underwent maximal cardiopulmonary exercise testing (CPET) and right heart catheterization (RHC) at rest and during constant work rate exercise (20 Watt)...
2014: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/24592820/genetic-and-electronic-medical-records-to-predict-outcomes-in-heart-failure-patients-genius-hf-design-and-rationale
#16
Luciana Gioli-Pereira, Sabrina Bernardez-Pereira, Fabiana Goulart Marcondes-Braga, Joceli Mabel Rocha Spina, Rafael Muniz Miranda da Silva, Noely Evangelista Ferreira, Fernando Bacal, Fábio Fernandes, Alfredo José Mansur, José Eduardo Krieger, Alexandre Costa Pereira
BACKGROUND: Studies adopting electronic medical records and genomic information are becoming widespread. Through this new modality in research, it is possible to study how genetic variants influence susceptibility towards chronic conditions and can improve patient care.Our aim is to develop a biobank with 2,000 heart failure patients treated in a tertiary cardiology hospital containing electronic medical records data and biologic samples for performing genome-wide association studies for validation and development of medical decision routines aimed at helping the clinical management of patients...
2014: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/24117675/survival-results-after-implantation-of-intrapericardial-third-generation-centrifugal-assist-device-an-intermacs-matched-comparison-analysis
#17
COMPARATIVE STUDY
Angelo M Dell'Aquila, Stefan R B Schneider, Jörg Stypmann, Björn Ellger, Bassam Redwan, Dominik Schlarb, Sven Martens, Jürgen R Sindermann
Reports on third-generation centrifugal intrapericardial pumps (HeartWare International, Inc., Framingham, MA, USA) have shown better survival results than the previous-generation devices. However, outcomes depending on the preoperative level of stability can substantially differ, resulting in a limited analysis of potentialities and drawbacks of a given device. In the present study we sought to compare in our single-center experience the survival results of this third-generation device with previous left ventricular systems taking into account the different preoperative Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) levels...
May 2014: Artificial Organs
https://www.readbyqxmd.com/read/23990139/experience-with-a-hotline-service-for-outpatients-on-a-ventricular-assist-device
#18
Hector Rodriguez Cetina Biefer, Simon Harald Sündermann, Maximilian Yosri Emmert, Peter Hasenclever, Mario Louis Lachat, Volkmar Falk, Markus Johannes Wilhelm
OBJECTIVES: With the growing number of outpatients on ventricular assist devices (VADs), there is an increasing need for "home discharge programs." One important feature is a 24-hour telephone service. In our center, the perfusionists run a so-called "hotline" for all of our VAD patients. This study analyzes the hotline calls with regard to frequency, the reason for calling, and the type of action undertaken. PATIENTS AND METHODS: Over a period of 5 years, 16 (12 EXCOR and 4 INCOR; Berlin Heart, Berlin, Germany) of 33 VAD patients (48%) were discharged and instructed to use the "hotline" service...
August 2014: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/23950970/development-of-a-new-approach-to-aid-in-visual-identification-of-murine-ips-colonies-using-a-fuzzy-logic-decision-support-system
#19
Vinicius Bassaneze, Chester Bittencourt Sacramento, Rodolfo Freire, Patrícia Fernandes De Alencar, Neli Regina Siqueira Ortega, Jose Eduardo Krieger
The a priori identification of induced pluripotent stem cells remains a challenge. Being able to quickly identify the most embryonic stem cell-similar induced pluripotent stem cells when validating results could help to reduce costs and save time. In this context, tools based on non-classic logic can be useful in creating aid-systems based on visual criteria. True colonies when viewed at 100x magnification have been found to have the following 3 characteristics: a high degree of border delineation, a more uniform texture, and the absence of a cracked texture...
2013: PloS One
https://www.readbyqxmd.com/read/23598578/inscor-a-simple-and-accurate-method-for-risk-assessment-in-heart-surgery
#20
COMPARATIVE STUDY
Omar A V Mejía, Luiz A F Lisboa, Luiz B Puig, Luiz Felipe P Moreira, Luis A O Dallan, Pablo M A Pomerantzeff, Fabio B Jatene, Noedir A G Stolf
BACKGROUND: Risk scores show difficulties to attain the same performance in different populations. OBJECTIVE: To create a simple and accurate risk assessment model for patients submitted to surgery due to coronary and/or valvular disease at Instituto do Coração da Universidade de São Paulo (InCor-HCFMUSP). METHODS: Between 2007 and 2009, 3,000 patients were submitted to surgical procedure due to coronary artery and/or valvular disease at InCor-HCFMUSP...
March 2013: Arquivos Brasileiros de Cardiologia
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