keyword
MENU ▼
Read by QxMD icon Read
search

ventricular assist devices

keyword
https://www.readbyqxmd.com/read/29678608/clinical-and-hemodynamic-effects-of-intra-aortic-balloon-pump-therapy-in-chronic-heart-failure-patients-with-cardiogenic-shock
#1
Justin A Fried, Abhinav Nair, Koji Takeda, Kevin Clerkin, Veli K Topkara, Amirali Masoumi, Melana Yuzefpolskaya, Hiroo Takayama, Yoshifumi Naka, Daniel Burkhoff, Ajay Kirtane, S M Dimitrios Karmpaliotis, Jeffrey Moses, Paolo C Colombo, A Reshad Garan
BACKGROUND: The role of the intra-aortic balloon pump (IABP) in acute decompensated heart failure (HF) with cardiogenic shock (CS) is largely undefined. In this study we sought to assess the hemodynamic and clinical response to IABP in chronic HF patients with CS and identify predictors of response to this device. METHODS: We retrospectively reviewed all patients undergoing IABP implantation from 2011 to 2016 at our institution to identify chronic HF patients with acute decompensation and CS (cardiac index <2...
March 20, 2018: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29677212/pulsatile-operation-of-a-continuous-flow-right-ventricular-assist-device-rvad-to-improve-vascular-pulsatility
#2
Boon C Ng, Matthias Kleinheyer, Peter A Smith, Daniel Timms, William E Cohn, Einly Lim
Despite the widespread acceptance of rotary blood pump (RBP) in clinical use over the past decades, the diminished flow pulsatility generated by a fixed speed RBP has been regarded as a potential factor that may lead to adverse events such as vasculature stiffening and hemorrhagic strokes. In this study, we investigate the feasibility of generating physiological pulse pressure in the pulmonary circulation by modulating the speed of a right ventricular assist device (RVAD) in a mock circulation loop. A rectangular pulse profile with predetermined pulse width has been implemented as the pump speed pattern with two different phase shifts (0% and 50%) with respect to the ventricular contraction...
2018: PloS One
https://www.readbyqxmd.com/read/29677038/postoperative-b-type-natriuretic-peptide-as-predictor-for-postoperative-outcomes-in-patients-implanted-with-left-ventricular-assist-devices
#3
Gardner Yost, Geetha Bhat, Patroklos Pappas, Antone Tatooles
Brain natriuretic peptide (BNP) is a cardiac neurohormone known to correlate with left ventricular (LV) dilation, decreased contractility, and increased stiffness. Consequently, BNP has been used as a prognostic tool to assess the degree of LV unloading for patients supported by continuous-flow LV assist devices (LVADs). We assessed the prognostic value of changes in BNP in the 2 weeks after LVAD implantation. This retrospective study analyzed laboratory findings and outcomes of 189 LVAD patients. Patients were separated into two groups based on whether serum BNP levels had improved from preoperative levels by postoperative day 14...
April 18, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29677037/small-left-ventricular-size-is-an-independent-risk-factor-for-ventricular-assist-device-thrombosis
#4
Venkat Keshav Chivukula, Jennifer A Beckman, Anthony R Prisco, Shin Lin, Todd F Dardas, Richard K Cheng, Stephen D Farris, Jason W Smith, Nahush A Mokadam, Claudius Mahr, Alberto Aliseda
The prevalence of ventricular assist device (VAD) therapy has continued to increase due to a stagnant donor supply and growing advanced heart failure (HF) population. We hypothesize that left ventricular (LV) size strongly influences biocompatibility and risk of thrombosis. Unsteady computational fluid dynamics (CFD) was used in conjunction with patient-derived computational modeling and virtual surgery with a standard, apically implanted inflow cannula. A dual-focus approach of evaluating thrombogenicity was employed: platelet-based metrics to characterize the platelet environment and flow-based metrics to investigate hemodynamics...
April 18, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29677035/outflow-cannula-systolic-slope-in-patients-with-left-ventricular-assist-devices-a-novel-marker-of-myocardial-contractility
#5
Jonathan Grinstein, Eric Kruse, Gabriel Sayer, Gene H Kim, Jayant Raikhelkar, Sara Kalantari, Nitasha Sarswat, Sirtaz Adatya, Takeyoshi Ota, Valluvan Jeevanandam, Victor Mor-Avi, Roberto M Lang, Nir Uriel
Left ventricular (LV) unloading with a LV assist device (LVAD) reverse remodels the heart and may lead to favorable changes in cellular architecture and LV geometry promoting myocardial recovery. Currently, there are no standardized methods for evaluating myocardial recovery. This study assesses the systolic slope of the LVAD outflow cannula as a marker for myocardial contractility. Doppler echocardiography (transthoracic echocardiogram [TTE]) of the LVAD outflow cannula and TTE of the LV cavity were prospectively collected in 57 patients with LVADs...
April 18, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29675919/therapy-and-outcome-of-staphylococcus-aureus-infections-of-intracorporeal-ventricular-assist-devices
#6
Miquel B Ekkelenkamp, Mats T Vervoorn, Jumamurat R Bayjanov, Ad C Fluit, Barry J Benaissa-Trouw, Faiz Z Ramjankhan
Infection of the driveline or pump pocket is a common complication in patients with ventricular assist devices (VADs) and Staphylococcus aureus is the main pathogen causing such infections. Limited evidence is currently available to guide the choice of antibiotic therapy and the duration of treatment in these patients. Patients at the University Medical Center Utrecht who developed a VAD-related S. aureus infection between 2007 and 2016 were retrospectively assessed. Blood culture isolates were typed by whole genome sequencing to differentiate between relapses and reinfections, and to determine whether antibiotic therapy had led to acquisition of resistance mutations...
April 19, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29674141/trends-in-utilization-of-mechanical-circulatory-support-in-patients-hospitalized-after-out-of-hospital-cardiac-arrest
#7
Nileshkumar J Patel, Nish Patel, Bhaskar Bhardwaj, Harsh Golwala, Varun Kumar, Varunsiri Atti, Shilpkumar Arora, Smit Patel, Nilay Patel, Gabriel A Hernandez, Apurva Badheka, Carlos E Alfonso, Mauricio G Cohen, Deepak L Bhatt, Navin K Kapur
OBJECTIVE: This study sought to examine the trends and predictors of mechanical circulatory support (MCS) use in patients hospitalized after out-of-hospital cardiac arrest (OHCA). BACKGROUND: There is a paucity of data regarding MCS use in patients hospitalized after OHCA. METHODS: We conducted an observational analysis of MCS use in 960,428 patients hospitalized after OHCA between January 2008 and December 2014 in the Nationwide Inpatient Sample database...
April 16, 2018: Resuscitation
https://www.readbyqxmd.com/read/29673504/usefulness-of-tricuspid-annular-diameter-to-predict-late-right-sided-heart-failure-in-patients-with-left-ventricular-assist-device
#8
Koki Nakanishi, Shunichi Homma, Jiho Han, Hiroo Takayama, Paolo C Colombo, Melana Yuzefpolskaya, Arthur R Garan, Maryjane A Farr, Paul Kurlansky, Marco R Di Tullio, Yoshifumi Naka, Koji Takeda
Although late-onset right-sided heart failure is recognized as a clinical problem in the treatment of patients with left ventricular assist devices (LVADs), the mechanism and predictors are unknown. Tricuspid valve (TV) deformation leads to the restriction of the leaflet motion and decreased coaptation, resulting in a functional tricuspid regurgitation that may act as a surrogate marker of late right-sided heart failure. This study aimed to investigate the association of preoperative TV deformation (annulus dilatation and leaflet tethering) with late right-sided heart failure development after continuous-flow LVAD implantation...
March 28, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29670765/mending-a-broken-heart-treatment-of-stress-induced-heart-failure-after-solid-organ-transplantation
#9
REVIEW
N Thao Galván, Kayla Kumm, Michael Kueht, Cindy P Ha, Dor Yoeli, Ronald T Cotton, Abbas Rana, Christine A O'Mahony, Glenn Halff, John A Goss
Stress-induced heart failure, also known as Broken Heart Syndrome or Takotsubo Syndrome, is a phenomenon characterized as rare but well described in the literature, with increasing incidence. While more commonly associated with postmenopausal women with psychiatric disorders, this entity is found in the postoperative patient. The nonischemic cardiogenic shock manifests as biventricular failure with significant decreases in ejection fraction and cardiac function. In a review of over 3000 kidney and liver transplantations over the course of 17 years within two transplant centers, we describe a series of 7 patients with Takotsubo Syndrome after solid organ transplantation...
2018: Journal of Transplantation
https://www.readbyqxmd.com/read/29668926/right-atrial-and-ventricular-echocardiographic-strain-analysis-predicts-requirement-for-right-ventricular-support-after-left-ventricular-assist-device-implantation
#10
Dafni Charisopoulou, Nicholas R Banner, Camil Demetrescu, Andre R Simon, Shelley Rahman Haley
Aims: The need for right ventricular assist device (RVAD) support after left ventricular assist device (LVAD) therapy is associated with increased morbidity and mortality. We used 2D echocardiographic strain analysis to assess right atrial (RA) and right ventricular (RV) mechanics and predict the need for RV mechanical support after LVAD implantation. Methods and results: Seventy advanced chronic heart failure (ACHF) patients [59 male, age 47 ± 12 years, 79% dilated cardiomyopathy, left ventricular ejection fraction 23 ± 10%] received continuous-flow LVAD as a bridge to transplantation over an 18 month period...
April 13, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29666073/ventricular-assist-device-utilization-in-heart-transplant-candidates-nationwide-variability-and-impact-on-waitlist-outcomes
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
keyword
keyword
59047
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"