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Ventricular assist device

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https://www.readbyqxmd.com/read/29666073/ventricular-assist-device-utilization-in-heart-transplant-candidates-nationwide-variability-and-impact-on-waitlist-outcomes
#1
Lauren K Truby, A Reshad Garan, Raymond C Givens, Koji Takeda, Hiroo Takayama, Pauline N Trinh, Melana Yuzefpolskaya, Maryjane A Farr, Yoshifumi Naka, Paolo C Colombo, Veli K Topkara
BACKGROUND: Continuous-flow left ventricular assist devices (CF-LVADs) have become a standard treatment choice in advanced heart failure patients. We hypothesized that practice patterns with regards to CF-LVAD utilization vary significantly among transplant centers and impact waitlist outcomes. METHODS AND RESULTS: The United Network for Organ Sharing registry was queried to identify adult patients who were waitlisted for heart transplantation (HT) between 2008 and 2015...
April 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29666072/left-ventricular-assist-device-inflow-cannula-angle-and-thrombosis-risk
#2
Venkat Keshav Chivukula, Jennifer A Beckman, Anthony R Prisco, Todd Dardas, Shin Lin, Jason W Smith, Nahush A Mokadam, Alberto Aliseda, Claudius Mahr
BACKGROUND: As heart failure prevalence continues to increase in the setting of a static donor supply, left ventricular assist device (LVAD) therapy for end-stage heart failure continues to grow. Anecdotal evidence suggests that malalignment of the LVAD inflow cannula may increase thrombosis risk, but this effect has not been explored mechanistically or quantified statistically. Our objective is to elucidate the impact of surgical angulation of the inflow cannula on thrombogenicity. METHODS AND RESULTS: Unsteady computational fluid dynamics is used in conjunction with computational modeling and virtual surgery to model flow through the left ventricle for 5 different inflow cannula angulations...
April 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29665860/the-use-of-cangrelor-with-heparin-for-left-ventricular-assist-device-implantation-in-a-patient-with-acute-heparin-induced-thrombocytopenia
#3
Yan K Gernhofer, Michael Ross, Swapnil Khoche, Victor Pretorius
BACKGROUND: Optimal anticoagulation strategy for cardiopulmonary bypass (CPB) in end-stage heart failure patients with heparin-induced thrombocytopenia (HIT) requiring left ventricular assist device (LVAD) implantation remains uncertain. Presently, there are no large-scale randomized studies comparing outcomes of alternative anticoagulation strategies for CPB in this patient population. A novel antiplatelet agent - cangrelor, which is a potent P2Y12 inhibitor with robust antiplatelet efficacy, rapid reversibility, and measurable drug effect, has become available since 2015...
April 17, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29664404/outcomes-in-patients-with-hypertrophic-cardiomyopathy-awaiting-heart-transplantation
#4
Julio Zuñiga Cisneros, Josef Stehlik, Craig H Selzman, Stavros G Drakos, Stephen H McKellar, Omar Wever-Pinzon
BACKGROUND: Current organ allocation policy and the rapid growth of mechanical support favor heart transplant (HT) candidates on left ventricular assist devices. HT candidates with hypertrophic cardiomyopathy (HCM) are usually not left ventricular assist device candidates and may have a disadvantage compared with dilated forms of cardiomyopathy. METHODS AND RESULTS: Adult HT candidates registered in the Scientific Registry of Transplant Recipients database between 1999 and 2016 were included...
March 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29663442/complexity-of-scar-and-ventricular-arrhythmias-in-dilated-cardiomyopathy-of-any-etiology-long-term-data-from-the-scarfear-cardiovascular-magnetic-resonance-predictors-of-appropriate-implantable-cardioverter-defibrillator-therapy-delivery-registry
#5
Stefano Pedretti, Sara Vargiu, Matteo Baroni, Santo Dellegrottaglie, Barbara Lanzarin, Alberto Roghi, Angela Milazzo, Giuseppina Quattrocchi, Maurizio Lunati, Patrizia Pedrotti
BACKGROUND: Late gadolinium enhancement (LGE) assessed with cardiovascular magnetic resonance (CMR) correlates with ventricular arrhythmias and survival in patients with structural heart disease. Whether some LGE characteristics may specifically improve prediction of arrhythmic outcomes is unknown. HYPOTHESIS: We sought to evaluate scar characteristics assessed with CMR to predict implantable cardioverter-defibrillator (ICD) interventions in dilated cardiomyopathy of different etiology...
April 17, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29663283/eeg-artifact-versus-subclinical-status-epilepticus-in-a-patient-following-cardiac-arrest
#6
Jean E Cibula, Daniel S Demos, Brenda G Fahy
BACKGROUND: A challenge in ICU EEG interpretation is identifying subclinical status epilepticus versus patterns on the ictal-interictal continuum versus other repetitive patterns. In the electrically noisy intensive care unit, identifying and eliminating interference and artifact allow accurate diagnoses from the EEG, avoiding unnecessary treatment or sedation. METHODS: We present a case during Impella (Abiomed Inc, Danvers, MA) continuous flow left ventricular assist device use where the EEG artifact was initially misinterpreted as seizure by the resident and treated as status epilepticus because of the "focal" sharply contoured repetitive pattern...
April 16, 2018: Neurocritical Care
https://www.readbyqxmd.com/read/29663123/creation-of-a-restrictive-atrial-communication-in-heart-failure-with-preserved-and-mid-range-ejection-fraction-effective-palliation-of-left-atrial-hypertension-and-pulmonary-congestion
#7
Anna Bauer, Markus Khalil, Monika Lüdemann, Jürgen Bauer, Anoosh Esmaeili, Roberta De-Rosa, Norbert F Voelkel, Hakan Akintuerk, Dietmar Schranz
BACKGROUND: Left atrial decompression is considered in patients with symptomatic heart failure with preserved ejection fraction (HFpEF). We aimed to evaluate the feasibility and efficacy of transcatheter generation of a restrictive atrial septum communication to manage HFpEF from infancy to adulthood with cardiomyopathy and congenital heart defect. METHODS AND RESULTS: From June 2009 to December 2016, 24 patients (50% with an age less than 16 years) with HFpEF were palliated; NYHA-/Ross class IV (n = 10); median systemic ventricular ejection fraction 64 (range 35-78) %...
April 16, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29661441/clinical-evolution-of-patients-using-ventricular-assist-devices-as-a-bridge-for-transplantation
#8
V Cestari, V L Pessoa, J D de Souza Neto, T Moreira, R Florêncio, G G de Vasconcelos, L Souza, A Braga, M G Sobral
OBJECTIVE: To evaluate the clinical evolution of patients with implantation of ventricular assist device (VAD) and identify the intervening factors for death. METHODS: This analytical, retrospective study was carried out in a public reference hospital in cardiopulmonary diseases located in northeastern Brazil. The study population encompassed the medical records of 16 patients who underwent VAD implantation. Data collection took place from January to August 2016, through the consultation of medical records...
April 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29656961/in-hospital-outcomes-of-percutaneous-ventricular-assist-devices-versus-intra-aortic-balloon-pumps-in-non-ischemia-related-cardiogenic-shock
#9
Gbolahan O Ogunbayo, Le Dung Ha, Qamar Ahmad, Naoki Misumida, Ayman Elbadawi, Odunayo Olorunfemi, Andrew Kolodziej, Adrian W Messerli, Ahmed Abdel-Latif, Claude S Elayi, Maya Guglin
INTRODUCTION: This study compared inpatient outcomes related to the use of these two devices among patients who developed cardiogenic shock not due to acute myocardial infarction or coronary revascularization. METHODS: We extracted admission-level records of patients with a diagnosis of cardiogenic shock who underwent either PVAD or IABP implantation from the National Inpatient Sample (NIS) database from 2010 to 2014. Our outcomes of interest were mortality and length of stay...
April 12, 2018: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/29652320/-bronchial-fistula-management-is-the-exit-found
#10
I Ya Motus, A V Bazhenov, A S Tsvirenko, R T Basyrov, P M Kholny, L V Kardapoltsev, P P Pechnikov
AIM: To present treatment of bronchial fistulas by using of occluders. MATERIAL AND METHODS: For the period from March 2015 to October 2016 Atrial Septal Defect (ASD) occluders have been used for bronchial fistulas occlusion (Lepu Medical Technology Co., Ltd.; Lifetech Scientific Co., Ltd.). These are devices designed to close ventricular and atrial septal defects. The procedure was performed in 8 patients with main bronchus fistula occurred after pulmonectomy for tuberculosis in 5 patients and lung cancer in 3 patients...
2018: Khirurgiia
https://www.readbyqxmd.com/read/29651826/new-percutaneous-interventions-in-heart-failure
#11
Elisabetta Moscarella, Salvatore Brugaletta, Manel Sabaté
Chronic heart failure (HF) is one of the main causes of mortality and morbidity worldwide and represents a growing challenge in interventional cardiology. Its prevalence is recently increasing due to the improvements in cardiac care with subsequent significant reduction in the HF acute mortality. HF may occur with either a reduced left ventricular ejection fraction (LVEF) (LVEF<40%, HFrEF) or a preserved EF (typically LVEF≥50%, HFpEF) indicative of diastolic dysfunction. Despite recent advances in drug therapies as well as in nonpharmacological strategies, including defibrillators, cardiac resynchronization therapy, LV assist devices (LVAD), mortality in HF remains high...
April 12, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29651631/sleep-and-self-care-correlates-before-and-after-implantation-of-a-left-ventricular-assist-device-lvad
#12
Jesus M Casida, Jean E Davis, Francis D Pagani, James E Aikens, Celeste Williams, James J Yang
The impact of sleep on LVAD patients' self-care behaviors is unknown. This study examined the patterns and changes of patients sleep quality (SQ), daytime sleepiness (DS), instrumental activities of daily living (IADL), and self-care capability (SCC) before and after LVAD. In addition, the relationships among these variables were explored. This observational study consisted of 38 subjects from two VAD Centers in Michigan. The subjects completed self-reported demographics and psychometrically sound SQ, DS, IADL, and SCC questionnaires before LVAD implant and at 1, 3, and 6 months after implant...
April 13, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29649657/contribution-of-computational-model-for-assessment-of-heart-tissue-local-stress-caused-by-suture-in-lvad-implantation
#13
A Chalon, J Favre, B Piotrowski, V Landmann, D Grandmougin, J-P Maureira, P Laheurte, N Tran
STUDY: Implantation of a Left Ventricular Assist Device (LVAD) may produce both excessive local tissue stress and resulting strain-induced tissue rupture that are potential iatrogenic factors influencing the success of the surgical attachment of the LVAD into the myocardium. By using a computational simulation compared to mechanical tests, we sought to investigate the characteristics of stress-induced suture material on porcine myocardium. METHODS: Tensile strength experiments (n = 8) were performed on bulk left myocardium to establish a hyperelastic reduced polynomial constitutive law...
March 28, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29648627/late-outcomes-of-subcostal-exchange-of-the-heartmate-ii-left-ventricular-assist-device-a-word-of-caution
#14
Sarah N Yu, Hiroo Takayama, Jiho Han, Arthur R Garan, Paul Kurlansky, Melana Yuzefpolskaya, Paolo C Colombo, Yoshifumi Naka, Koji Takeda
OBJECTIVES: Previous studies have shown the usefulness of the subcostal exchange of the HeartMate II left ventricular assist device for device malfunction. However, long-term data are still limited. METHODS: Between March 2004 and July 2017, 41 of 568 (7.2%) patients who had received a HeartMate II implant at our institution had a device exchange via a subcostal incision. We summarized early and late outcomes. RESULTS: Forty-one patients had a total of 48 subcostal pump exchanges...
April 10, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29648625/corrigendum-to-prognostic-value-of-3-dimensional-echocardiographical-heart-volume-assessment-in-patients-scheduled-for-left-ventricular-assist-device-implantation-eur-j-cardiothorac-surg-doi-10-1093-ejcts-ezy002
#15
Albert Otten, Stephan Kurz, Sibtain Anwar, Evgenij Potapov, Christian Krall, Benjamin O'Brien, Helmut Habazettl, Thomas Krabatsch, Marian Kukucka
No abstract text is available yet for this article.
April 10, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29643259/cerebrovascular-accidents-during-mechanical-circulatory-support-new-predictors-of-ischemic-and-hemorrhagic-strokes-and-outcome
#16
Saef Izzy, Daniel B Rubin, Firas S Ahmed, Feras Akbik, Simone Renault, Katelyn W Sylvester, Henrikas Vaitkevicius, Jennifer A Smallwood, Michael M Givertz, Steven K Feske
BACKGROUND AND PURPOSE: Left ventricular assist devices (LVADs) have emerged as an effective treatment for patients with advanced heart failure refractory to medical therapy. Post-LVAD strokes are an important cause of morbidity and reduced quality of life. Data on risks that distinguish between ischemic and hemorrhagic post-LVAD strokes are limited. The aim of this study was to determine the incidence of post-LVAD ischemic and hemorrhagic strokes, their association with stroke risk factors, and their effect on mortality...
April 11, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29642755/successful-treatment-of-ventricular-arrhythmic-storm-with-percutaneous-coronary-intervention-and-catheter-ablation-in-a-patient-with-left-ventricular-assist-device
#17
Nihat Firat Sipahi, Arash Mehdiani, Diyar Saeed, Udo Boeken, Hisaki Makimoto, Artur Lichtenberg, Hannan Dalyanoglu
INTRODUCTION: Ventricular arrhythmias are common in patients with advanced heart failure, which may also persist after sufficient intensive therapy for heart failure even with a left ventricular assist device. Although most ventricular arrhythmias have no hemodynamic relevance during left ventricular assist device support, some patients suffer from right ventricular decompensation due to ventricular arrhythmias resulting in severe hemodynamic deterioration and poor clinical outcomes. METHODS: We describe herein an left ventricular assist device patient with refractory ventricular arrhythmic storm early after left ventricular assist device implantation...
April 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29629994/the-achilles-heel-of-left-ventricular-assist-device-therapy-right-ventricle
#18
Neel K Ranganath, Deane E Smith, Nader Moazami
PURPOSE OF REVIEW: Many patients suffer from either persistent right ventricular failure (RVF) at the time of left ventricular assist device (LVAD) or have ongoing symptoms consistent with RVF during chronic mechanical circulatory support. The lack of long-term right ventricular assist devices (RVADs) has limited the impact that mechanical circulatory support can provide to patients with biventricular failure. We aim to review the entire spectrum of RVF in patients receiving LVADs and reflect on why this entity remains the Achilles' heel of LVAD therapy...
April 7, 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29629921/assessment-of-cardiac-thrombosis-in-patients-with-left-ventricular-assist-device-using-multidetector-cardiac-computed-tomography
#19
Chukwuemeka A Obi, Nicholas Chan, Monica G Rizkalla, John N Makaryus
: A 79-year-old man with nonischemic cardiomyopathy who underwent left ventricular assist device HeartMate II and automated implantable cardioverter defibrillator placement presented with recurrent refractory sustained ventricular tachycardia, elevated lactate dehydrogenase, and low haptoglobin. Echocardiography demonstrated no thrombosis; cardiac computed tomography showed patent inflow and outflow cannulas while detecting an irregularly shaped mass adherent to the left coronary cusp of the aortic valve, suggesting a thrombus...
April 7, 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29628145/percutaneous-biventricular-impella-support-in-therapy-refractory-cardiogenic-shock
#20
Cheng-Ying Chiu, Robert Hättasch, Damaris Praeger, Fabian Knebel, Karl Stangl, Ivan Diaz Ramirez, Henryk Dreger
INTRODUCTION: Percutaneous mechanical circulatory support systems have increasingly been adopted as a bail out strategy in patients with cardiogenic shock. Since studies showed mostly mixed results, however, the use of support systems remains a case by case decision. CASE: Here, we report on a case of therapy-refractory cardiogenic shock due to acute myocardial infarction treated with percutaneous right and left ventricular assist devices (Impella RP and CP). CONCLUSION: Due to myocardial stunning, even patients with fulminant cardiogenic shock have the potential for full recovery...
April 5, 2018: Heart & Lung: the Journal of Critical Care
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