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HeartMate II

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https://www.readbyqxmd.com/read/28488003/daily-transient-discontinuation-of-extracorporeal-lvad-to-prevent-thromboembolism-of-mechanical-aortic-valve-prosthesis
#1
Takamichi Inoue, Tadashi Kitamura, Shinzo Torii, Mitsuhiro Hirata, Toshiaki Mishima, Koichi Sughimoto, Hirotoki Ohkubo, Kensuke Kobayashi, Mamika Motokawa, Miyuki Shibata, Takuya Matsushiro, Yuta Tsuchida, Yurie Miyata, Minoru Ono, Kagami Miyaji
Patients with mechanical aortic valves are generally contraindicated for left ventricular assist device (LVAD) insertion because the prosthetic valve often becomes fixed in closed position. A 41-year-old woman with mechanical aortic valve prosthesis experienced sudden chest pain and developed cardiogenic shock. A paracorporeal pulsatile LVAD and a monopivot centrifugal pump as a right VAD (RVAD) were implanted. The mechanical aortic valve was intentionally left in place. Soon after the operation, LVAD support was discontinued daily for few seconds to allow the mechanical aortic valve to open and to avoid thrombus formation...
May 9, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28483949/development-of-high-grade-daptomycin-resistance-in-corynebacterium-striatum-while-on-therapy
#2
Saira Ajmal, Omar Abu Saleh, Elena Beam
We report of a 62-year-old male with ischemic cardiomyopathy complicated by cardiogenic shock who underwent placement of a left-ventricular assist device (HeartMate II LVAD) in July 2013 as destination therapy.….
May 8, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28470998/percutaneous-transcatheter-balloon-dilatation-and-stenting-to-the-inflow-cannula-stenosis-of-a-left-ventricular-assist-device
#3
Stephen M Carr, Dieter F Lubbe, Philip R Huber
Left ventricular assist devices (LVAD) improve survival in patients with advanced heart failure but are prone to various complications causing mechanical failure. Inflow cannula stenosis presents a particular challenge often requiring invasive surgical repair. We present a novel transcatheter approach for stent delivery to successfully restore hemodynamic function in a patient with inflow cannula stenosis of a HeartMate II LVAD. © 2017 Wiley Periodicals, Inc.
May 4, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28465311/accuracy-of-seattle-heart-failure-model-and-heartmate-ii-risk-score-in-non-inotrope-dependent-advanced-heart-failure-patients-insights-from-the-roadmap-study-risk-assessment-and-comparative-effectiveness-of-left-ventricular-assist-device-and-medical-management
#4
REVIEW
David E Lanfear, Wayne C Levy, Josef Stehlik, Jerry D Estep, Joseph G Rogers, Keyur B Shah, Andrew J Boyle, Joyce Chuang, David J Farrar, Randall C Starling
BACKGROUND: Timing of left ventricular assist device (LVAD) implantation in advanced heart failure patients not on inotropes is unclear. Relevant prediction models exist (SHFM [Seattle Heart Failure Model] and HMRS [HeartMate II Risk Score]), but use in this group is not established. METHODS AND RESULTS: ROADMAP (Risk Assessment and Comparative Effectiveness of Left Ventricular Assist Device and Medical Management in Ambulatory Heart Failure Patients) is a prospective, multicenter, nonrandomized study of 200 advanced heart failure patients not on inotropes who met indications for LVAD implantation, comparing the effectiveness of HeartMate II support versus optimal medical management...
May 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28461802/nonidentical-continuous-flow-devices-for-biventricular-support
#5
Andrew C W Baldwin, Elena Sandoval, William E Cohn, Hari R Mallidi, Jeffrey A Morgan, O H Frazier
Although biventricular heart failure has been successfully managed with dual continuous-flow ventricular assist devices, the long-term use of 2 mechanically dissimilar pumps has traditionally been discouraged. We present the case of a 52-year-old man whose treatment with a HeartMate II left ventricular assist device was complicated by right ventricular failure, necessitating the implantation of a long-term right ventricular assist device. A HeartWare left ventricular assist device was placed along the right ventricular base to avoid interference with the HeartMate II housing...
April 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28430969/transfemoral-aortic-valve-replacement-prior-to-heartmate-ii-left-ventricular-assist-device-exchange
#6
Shashank Sharma, Vakhtang Tchantchaleishvili, Alexandros Briasoulis, David L Joyce
No abstract text is available yet for this article.
April 18, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28430305/turbulence-measurements-in-an-axial-rotary-blood-pump-with-laser-doppler-velocimetry
#7
Chan Y Schüle, Klaus Affeld, Max Kossatz, Christian O Paschereit, Ulrich Kertzscher
BACKGROUND: The implantation of rotary blood pumps as ventricular assist devices (VADs) has become a viable therapy for quite a number of patients with end-stage heart failure. However, these rotary blood pumps cause adverse events that are related to blood trauma. It is currently believed that turbulence in the pump flow plays a significant role. But turbulence has not been measured to date because there is no optical access to the flow space in rotary blood pumps because of their opaque casings...
April 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28430300/left-ventricular-assist-pump-pocket-infection-conservative-treatment-strategy-for-destination-therapy-candidates
#8
Elie Haddad, François-Xavier Lescure, Walid Ghodhbane, Laurent Lepage, Camille D'humieres, William Vindrios, Yazdan Yazdanpanah, Patrick Nataf, Matthias Kirsch
BACKGROUND: Heart failure is a major cause of mortality and morbidity, particularly among patients with advanced disease and no access to cardiac transplantation. LVAD implantation is not only a bridge-to-transplantation option for patients awaiting a heart donor, but is often used as bridge-to-destination therapy in patients unsuited for transplantation for various reasons. LVAD infection is considered the second-most common cause of death in patients who survive the initial 6 months on LVAD support...
April 20, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28430297/stopping-conventional-showering-decreases-pseudomonas-infections-in-left-ventricular-assist-device-patients
#9
Nana Aburjania, Saadia Sherazi, Vakhtang Tchantchaleishvili, Jeffrey D Alexis, Christine M Hay
BACKGROUND: Left ventricular assist device (LVAD) exit-site infections represent a major challenge in the era of modern LVADs. Infections caused by Pseudomonas are particularly difficult to treat due to limited antibiotic susceptibility. We hypothesized that keeping the LVAD exit site dry while bathing could result in reduced incidence of Pseudomonas infections. METHODS: Starting in April 2013, all patients who underwent placement of HeartMate II (HM II) LVAD were instructed not to take conventional showers and to keep the exit site dry while bathing...
April 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28412431/3d-morphological-changes-in-lv-and-rv-during-lvad-ramp-studies
#10
Karima Addetia, Nir Uriel, Francesco Maffessanti, Gabriel Sayer, Sirtaz Adatya, Gene H Kim, Nitasha Sarswat, Savitri Fedson, Diego Medvedofsky, Eric Kruse, Keith Collins, Daniel Rodgers, Takayoshi Ota, Valluvan Jeevanandam, Victor Mor-Avi, Daniel Burkhoff, Roberto M Lang
OBJECTIVES: The purpose of this study was to investigate the differential impact of the 2 most commonly available left ventricular assist device (LVAD) types on the right (RV) and left (LV) ventricles using 3-dimensional (3D) echocardiography-based analysis of ventricular morphology. BACKGROUND: LVADs have emerged as common therapy for advanced heart failure. Recent data suggest that the heart responds differently to speed settings in the 2 main devices available (HeartMate II [HMII], St Jude Medical, Pleasanton, California, and HVAD, HeartWare International, Framingham, Massachusetts)...
April 7, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28385948/hemocompatibility-related-outcomes-in-the-momentum-3-trial-at-6-months-a-randomized-controlled-study-of-a-fully-magnetically-levitated-pump-in-advanced-heart-failure
#11
Nir Uriel, Paolo C Colombo, Joseph C Cleveland, James W Long, Christopher Salerno, Daniel J Goldstein, Chetan B Patel, Gregory A Ewald, Antone J Tatooles, Scott C Silvestry, Ranjit John, Christiano Caldeira, Valluvan Jeevanandam, Andrew J Boyle, Kartik S Sundareswaran, Poornima Sood, Mandeep R Mehra
BACKGROUND : The HeartMate 3 (HM3) Left Ventricular Assist System (LVAS) (Abbott) is a centrifugal, fully magnetically levitated, continuous-flow blood pump engineered to enhance hemocompatibility and reduce shear stress on blood components. The MOMENTUM 3 trial (Multicenter Study of MagLev Technology in Patients Undergoing Mechanical Circulatory Support Therapy With HeartMate 3) compares the HM3 LVAS with the HeartMate II (HMII) LVAS (Abbott) in advanced heart failure refractory to medical management, irrespective of therapeutic intention (bridge to transplant versus destination therapy)...
April 6, 2017: Circulation
https://www.readbyqxmd.com/read/28365215/mean-arterial-pressure-to-central-venous-pressure-ratio-a-novel-marker-for-right-ventricular-failure-after-left-ventricular-assist-device-placement
#12
Burhan Mohamedali, Rami Doukky, Kelly Karavalos, Elizabeth Avery, Geetha Bhat
BACKGROUND: Early right ventricular failure (RVF) is common after left ventricular assist device (LVAD) implantation and often leads to increased morbidity and mortality. It is difficult to predict early RVF on the basis of clinical and hemodynamic parameters. We investigated the utility of mean arterial pressure (MAP) to central venous pressure (CVP) ratio in predicting early RVF. METHODS AND RESULTS: We analyzed a retrospective cohort of 212 consecutive patients who underwent hemodynamic assessment before destination-therapy LVAD implantation...
March 29, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28350641/exercise-training-in-a-patient-with-a-left-ventricular-assist-device-and-large-aortic-valve-thrombus
#13
Mijiti Wuliya, Sandrine Peyrot, Costin Radu, Jean-François Deux, Habib Ben Elhaj, Nicolas Lellouche, Thibaud Damy, Soulef Guendouz, Barnabas Gellen
DETAILS OF THE CLINICAL CASE: An aortic valve thrombus (AVT) is a rare complication after HeartMate II implantation. In a 44-year-old man, a large AVT was discovered 6 weeks after implantation of a HeartMate II for severe dilated cardiomyopathy. The aortic valve was permanently closed. DISCUSSION: After a followup of 3 months without embolic events, the patient started a cardiac rehabilitation (CR) program involving aerobic exercise, resistance exercises, group gymnastics, and relaxation exercise, and completed the program without any complications, resulting in a significant functional benefit...
March 24, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28329284/contemporary-outcome-of-unplanned-right-ventricular-assist-device-for-severe-right-heart-failure-after-continuous-flow-left-ventricular-assist-device-insertion
#14
Daisuke Yoshioka, Hiroo Takayama, Reshad A Garan, Veli K Topkara, Jiho Han, Paul Kurlansky, Melana Yuzefpolskaya, Paolo C Colombo, Yoshifumi Naka, Koji Takeda
OBJECTIVES: The timely use of a right ventricular assist device (RVAD) becomes necessary for severe right heart failure (RHF) after left ventricular assist device (LVAD) insertion. This study evaluates outcomes in patients who required unplanned RVAD support early after continuous-flow (CF) LVAD insertion. METHODS: We retrospectively reviewed 305 patients who underwent HeartMate II/HeartWare CF-LVAD insertion between 2009 and 2014. Twenty-seven (9%) patients required unplanned RVAD for severe RHF early after LVAD insertion...
June 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329060/first-series-of-left-ventricular-assist-device-exchanges-to-heartmate-3
#15
Jasmin S Hanke, Sebastian V Rojas, Günes Dogan, Christina Feldmann, Erik Beckmann, Ezin Deniz, Bettina Wiegmann, Jana-Elena Michaelis, L Christian Napp, Dominik Berliner, Malakh Shrestha, Johann Bauersachs, Axel Haverich, Jan D Schmitto
OBJECTIVES: Left ventricular assist device (LVAD) exchange is becoming a standard surgical procedure. The exchange procedure is an opportunity to upgrade patients to a new generation pump that offers advanced reduction of adverse events or longer battery hours. METHODS: We performed an analysis of 6 consecutive patients who underwent LVAD exchange to HeartMate 3 either from a HeartWare or HeartMate (HM) II device. Minimally invasive operations were performed through a lateral thoracotomy...
May 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28324260/stroke-and-intracranial-hemorrhage-in-heartmate-ii-and-heartware-left-ventricular-assist-devices-a-systematic-review
#16
Sung M Cho, Nader Moazami, Jennifer A Frontera
BACKGROUND: Ischemic stroke and intracranial hemorrhage (ICH) following left ventricular assist device (LVAD) placement are major causes of morbidity. The incidence and mortality associated with these events stratified by device type have not been systematically explored. METHODS: A systematic review of PubMed was conducted from January 2007 through June 2016 for all English-language articles involving HeartMate II (HMII) and HeartWare LVAD patients. Ischemic stroke and/or ICH incidence (events per patient-year) and associated mortality rates were abstracted for each device type...
March 21, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28319521/warfarin-and-aspirin-versus-warfarin-alone-for-prevention-of-embolic-events-in-patients-with-a-heartmate-ii%C3%A2-left-ventricular-assist-device
#17
Joseph S Van Tuyl, Ian B Hollis, Khalid A Alburikan, Richard Tran, Brian P Murray, Jo E Rodgers, Jason N Katz, Brett C Sheridan
Acquired von Willebrand disease increases bleeding risk in patients implanted with a continuous-flow left ventricular assist device. Lower aspirin doses decrease the risk of bleeding without an increased risk of embolic events. No published studies in the U.S. have compared the incidence of bleeding and thrombotic events between antithrombotic regimens with and without aspirin. A single-center, retrospective analysis was conducted of adult patients implanted with a HM II. Patients received warfarin and aspirin 81 mg daily or warfarin alone...
March 17, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28288574/association-of-global-and-disease-specific-health-status-with-outcomes-following-continuous-flow-left-ventricular-assist-device-implantation
#18
Kelsey M Flint, John A Spertus, Fengming Tang, Philip Jones, Timothy J Fendler, Larry A Allen
BACKGROUND: The prognostic value of heart failure specific and global health status before and after left ventricular assist device (LVAD) implantation in the usual care setting is not well studied. METHODS: We included 3,836 continuous-flow LVAD patients in the INTERMACS registry. Health status was measured pre-operatively and 3 months post-LVAD using the Kansas City Cardiomyopathy Questionnaire (KCCQ) and EuroQol visual analog scale (VAS). Primary outcomes were mortality/rehospitalization...
March 14, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28266662/clinical-correlates-of-b-type-natriuretic-peptide-monitoring-in-outpatients-with-left-ventricular-assist-device
#19
Marketa Hegarova, Milos Kubanek, Ivan Netuka, Jiri Maly, Zora Dorazilova, Tomas Gazdic, Janka Franekova, Vera Lanska, Vojtech Melenovsky, Josef Kautzner, Ivan Malek
BACKGROUND: B-type natriuretic peptide (BNP) is a strong predictor of prognosis in chronic heart failure. We aimed to evaluate the clinical correlates and interpretation of BNP monitoring in LVAD out-patient recipients. METHODS: We performed a prospective study in 136 individuals after HeartMate II LVAD implantation. During follow-up they were divided into group A (severe adverse events requiring hospitalisation), group B (mild to moderate adverse events) and group C (an uneventful course)...
February 27, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28247472/perforation-of-a-heartmate-ii-outflow-graft
#20
Masashi Kawabori, Chitaru Kurihara, William E Cohn, Andrew B Civitello, O H Frazier, Jeffrey A Morgan
No abstract text is available yet for this article.
March 2017: Journal of Cardiac Surgery
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