keyword
MENU ▼
Read by QxMD icon Read
search

LVAD outflow graft

keyword
https://www.readbyqxmd.com/read/29750405/heartmate-3-implantation-via-left-antero-lateral-thoracotomy-to-avoid-resternotomy-in-high-risk-patients
#1
Raymond Pfister, Piergiorgio Tozzi, Roger Hullin, Patrick Yerly, Fritz-Patrick Jahns, René Prêtre, Matthias Kirsch
Left ventricular assist devices (LVADs) are currently the best alternative to cardiac transplantation for patients with end-stage heart failure (HF) as a bridge to transplant or to decision, or as destination therapy. Full median sternotomy or minimally invasive techniques are the more standard approaches used at present.  LVADs are usually implanted between the left ventricle apex and the ascending aorta. An implantation through a left thoracotomy with an outflow graft connected to the descending aorta is much less performed nowadays due to the longer times to extubation, higher incidence of postoperative pain, and poorer hemodynamics in the ascending aorta, which may lead to thrombosis...
April 25, 2018: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/29724977/first-successful-percutaneous-treatment-of-a-totally-occluded-heartware-outflow-graft-case-report-and-literature-review
#2
Cemal Kemaloğlu, Refik Emre Altekin, Ömer Bayezid
As the number of implanted left ventricular assist devices (LVADs) used increases, the frequency of chronic complications encountered also increases. The pause of blood flow in the outflow graft is a rare, but fatal, complication. The aim of this article was to present the case of a patient in whom HeartWare outflow graft occlusion was removed by balloon angioplasty and to examine the treatment modalities of HeartWare outflow graft occlusions that have been percutaneously performed to date. The literature was searched for percutaneous interventions on outflow grafts of the left ventricular assist devices...
May 2018: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29596613/repeat-left-ventricular-assist-device-exchange-with-inflow-or-outflow-correction-for-recurrent-pump-thrombosis-and-cerebral-haemorrhage-through-limited-incisions
#3
Medhat Radwan, Petar Risteski, Richard Hoffmann, Aron-Frederik Popov
Left ventricular assist devices (LVADs) may require subsequent pump exchange due to device thrombosis or thromboembolism. A limited left thoracotomy may offer advantages over standard full sternotomy in redo procedures by preserving pristine median access and decreasing the potential for re-entry injuries, postoperative bleeding and transfusion requirements. We describe repeat LVAD exchange via the left limited thoracotomy with outflow graft anastomosis to the left subclavian artery with the correction of LVAD inflow cannula angulation following recurrent LVAD thromboses...
March 27, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29492394/pre-transplant-ventricular-assist-device-explant
#4
REVIEW
Espeed Khoshbin, Stephan Schueler
Explantation of a left ventricular assist device (LVAD) may be challenging even in the most experienced hands. We aim to describe the technique for explantation of an LVAD together with the heart as applicable to all contemporary implantable mechanical assist devices. In order to ensure safe explantation, particular care must be taken at three distinct stages: at the time of LVAD implantation, at pre-transplant assessment and at the time of heart transplantation. The preparation for a safe explantation at LVAD implantation includes positioning the driveline and the outflow graft away from the back of the sternum to ensure protection from injury during re-entry into the chest...
January 2018: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29179901/ct-imaging-of-complications-associated-with-continuous-flow-left-ventricular-assist-devices-lvads
#5
Girish S Shroff, Daniel Ocazionez, Bindu Akkanti, Daniel Vargas, Alheli Garza, Pushpender Gupta, Jayeshkumar A Patel, Manish K Patel, Igor D Gregoric
Heart failure is becoming increasingly prevalent, and more patients are being treated with left ventricular assist devices (LVADs), either as a bridge to transplant or as destination therapy. The use of continuous-flow LVADs is on the rise. LVAD therapy is associated with several classes of complications, including bleeding, thrombosis, and infection. CT imaging can be used effectively to diagnose LVAD complications, including mediastinal hematomas and pericardial, abdominal wall, and retroperitoneal hemorrhage, inflow and outflow graft and aortic thrombi, and driveline and pump pocket infections...
December 2017: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/29177686/preclinical-animal-study-of-the-nipro-ventricular-assist-device-for-use-in-pediatric-patients
#6
Noritsugu Naito, Yoshiaki Takewa, Satoru Kishimoto, Kei Iizuka, Toshihide Mizuno, Tomonori Tsukiya, Minoru Ono, Eisuke Tatsumi
Although the outcomes of patients with end-stage heart failure treated with implantable left ventricular assist devices have improved, extracorporeal left ventricular assist devices continue to play an important role, especially in pediatric patients. The present study aimed to examine the long-term biocompatibility of a small-sized extracorporeal pneumatic left ventricular assist device (NIPRO-LVAD) used in a 30- to 90-day animal experiment. The NIPRO-LVAD was designed for pediatric patients or small-sized adults...
November 24, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29164425/outflow-graft-anastomosis-site-design-could-be-correlated-to-aortic-valve-regurgitation-under-left-ventricular-assist-device-support
#7
Kei Iizuka, Tomohiro Nishinaka, Yuki Ichihara, Takuma Miyamoto, Kenji Yamazaki
Aortic valve regurgitation (AR) is a critical complication during circulatory support with a left ventricular assist device (LVAD). The time-course of AR and related factors, including outflow graft anastomosis site design, were investigated. Twenty-three patients who had continuous-flow LVAD implantation and were supported for more than 6 months were investigated. AR grade (none, 0; trivial, 0.5; mild, 1; mild-moderate, 1.5; moderate, 2; moderate-severe, 2.5; severe, 3) and aortic valve opening were evaluated with echocardiography...
November 21, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28962493/first-results-of-heartware-left-ventricular-assist-device-implantation-with-tunnelling-of-the-outflow-graft-through-the-transverse-sinus
#8
Jasmin S Hanke, Sebastian V Rojas, Tomislav Cvitkovic, Bettina Wiegmann, Alexander Horke, Gregor Warnecke, Axel Haverich, Jan D Schmitto
OBJECTIVES: The number of left ventricular assist device (LVAD) implants for the treatment of advanced heart failure is increasing tremendously. The main therapeutic goal of this operation is to provide a bridge to transplant for patients awaiting a donor heart. In 2011, we developed a novel, minimally invasive surgical technique for LVAD implantation. To avoid possible outflow graft injuries during redo sternotomies as well as to provide a more physiological outflow towards the aortic arch, a further modification of this approach was made with outflow graft tunnelling through the transverse sinus...
October 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28953485/long-term-mechanical-durability-of-left-ventricular-assist-devices-an-urgent-call-for-periodic-assessment-of-technical-integrity
#9
Rahatullah Muslem, Sakir Akin, Alina A Constantinescu, Olivier Manintveld, Jasper J Brugts, Cees W van der Heiden, Ozcan Birim, Ad J J C Bogers, Kadir Caliskan
Long-term durability and incidence of potential mechanical device failure (MDF) are largely unknown. In this study, we investigated the incidence and potential predictors of MDF in continuous flow left ventricular assist device (CF-LVAD) patients. We conducted a retrospective study of all CF-LVADs (type HeartMate II) implanted in our center. MDF was defined as a failure of driveline, inflow-outflow graft, electrical power, drive unit, or motor failure, excluding device failure because of a biologic complication (e...
September 26, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28938308/sensor-based-physiologic-control-strategy-for-biventricular-support-with-rotary-blood-pumps
#10
Yu Wang, Steven C Koenig, Zhongjun Wu, Mark S Slaughter, Guruprasad A Giridharan
Rotary biventricular assist devices (BiVAD) are becoming a clinically accepted treatment option for end-stage biventricular failure. To improve BiVAD efficacy and safety, we propose a control algorithm to achieve the clinical objectives of maintaining left-right-sided balance, restoring physiologic flows, and preventing ventricular suction. The control algorithm consists of two proportional-integral (PI) controllers for left and right ventricular assist devices (LVAD and RVAD) to maintain differential pump pressure across LVAD (ΔPL) and RVAD (ΔPR) to provide left-right balance and physiologic flow...
September 21, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28887110/percutaneous-decommissioning-of-left-ventricular-assist-device
#11
Jia-Lin Soon, Ju-Le Tan, Choon-Pin Lim, Teing-Ee Tan, Swee-Yaw Tan, Ka-Lee Kerk, Kheng-Leng David Sim, Cumaraswamy Sivathasan
BACKGROUND: The Left Ventricular Assist Device (LVAD) has revolutionised our treatment of advanced stage heart failure, giving debilitated patients a new lease on life. A small proportion of these LVAD patients can be bridged-to-recovery. The identification of these patients and decision to wean, however, can be challenging. METHODS: The need to fully explant the device upon recovery has evolved to a minimalist approach aiming to avoid injury to the 'recovered' heart...
August 19, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28846527/kinking-of-the-outflow-graft-consequent-ventricular-tachycardia-and-the-need-for-reoperation-in-a-patient-with-left-ventricular-assist-device
#12
Dusko Terzic, Emilija Nestorovic, Svetozar Putnik, Dejan Markovic, Miljko Ristic
BACKGROUND: Left ventricular assist devices (LVAD) have become a lifesaving solution for patients awaiting heart transplantation as well as an option to support the failing hearts of non-transplant candidates as a lifelong, or destination therapy (DT). Improvements in LVAD design have enabled greater durability and broader patient applicability, but not without complications. Ventricular arrhythmias in LVAD patients were considered benign in the early days of LVADs, but today are increasingly recognized for their harmful impact on morbidity and quality of life...
August 24, 2017: Heart Surgery Forum
https://www.readbyqxmd.com/read/28741841/pulmonary-valve-opening-with-two-rotary-left-ventricular-assist-devices-for-biventricular-support
#13
Eric L Wu, Frank Nestler, Matthias Kleinheyer, Michael C Stevens, Jo P Pauls, John F Fraser, Shaun D Gregory
Right ventricular failure is a common complication associated with rotary left ventricular assist device (LVAD) support. Currently, there is no clinically approved long-term rotary right ventricular assist device (RVAD). Instead, clinicians have implanted a second rotary LVAD as RVAD in biventricular support. To prevent pulmonary hypertension, the RVAD must be operated by either reducing pump speed or banding the outflow graft. These modes differ in hydraulic performance, which may affect the pulmonary valve opening (PVO) and subsequently cause fusion, valvular insufficiency, and thrombus formation...
January 2018: Artificial Organs
https://www.readbyqxmd.com/read/28265218/minimally-invasive-lvad-deactivation-in-a-65-year-old-man-with-recurrent-pump-thrombosis-and-left-ventricular-recovery
#14
REVIEW
Akshay Pendyal, Christopher V Chien, James O Mudd, Jill M Gelow
Pump thrombosis is a dire sequela after left ventricular assist device (LVAD) implantation. Treatment comprises antiplatelet agents, anticoagulants, thrombolytic agents, and pump exchange. Although pump exchange is the definitive therapy, it is also the most invasive, often exposing patients to the risks of repeat sternotomy and cardiopulmonary bypass. In some cases, patients experience left ventricular recovery after LVAD implantation. The optimal strategy surrounding the management of LVADs in patients who have experienced ventricular recovery is unknown; techniques range from total system explantation to partial pump resection...
February 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28208117/percutaneous-transcatheter-therapies-for-the-management-of-left-ventricular-assist-device-complications
#15
REVIEW
Rohan J Kalathiya, Jonathan Grinstein, Nir Uriel, Atman P Shah
Heart failure is a growing epidemic in the United States and throughout the world. The utilization of continuous-flow left ventricular assist devices (LVADs) has greatly increased over the last decade. In addition, a limited supply of organ donors has led to a rise in the use, and duration, of LVADs for destination therapy. The increased use of LVAD therapy has led to the observation of mechanical complications such as device thrombosis, de novo aortic insufficiency, and outflow graft stenosis, all of which are associated with prolonged LVAD support...
May 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28195884/interventional-treatment-of-lvad-outflow-graft-stenosis-by-introduction-of-bare-metal-stents
#16
Dominik Wiedemann, Thomas Schlöglhofer, Thomas Haberl, Julia Riebandt, Kamen Dimitrov, Heinrich Schima, Johannes Kastner, Wolfgang Matzek, Günther Laufer, Daniel Zimpfer
Left ventricular assist device outflow graft stenosis is a rare but life-threatening complication of mechanical cirulatory support therapy. Current treatment modalities (pump exchange or systemic thrombolytic therapy) are associated with significant mortality and morbidity. Implantation of bare metal stents within the stenosed outflow graft is an alternative. Herein, we describe a series of three cases with successful stent placement. This seems to be safe and successful; however, correct and early diagnosis of outflow stenosis can be challenging...
January 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28163837/simultaneous-ramp-right-heart-catheterization-and-echocardiography-in-a-reliantheart-left-ventricular-assist-device
#17
Dipanjan Banerjee, Debleena Dutt, Sebastien Duclos, Karim Sallam, Matthew Wheeler, Richard Ha
Many clinicians caring for patients with continuous flow left ventricular assist devices (CF-LVAD) use ramp right heart catheterization (RHC) studies to optimize pump speed and also to troubleshoot CF-LVAD malfunction. An investigational device, the ReliantHeart Heart Assist 5 (Houston, TX), provides the added benefit of an ultrasonic flow probe on the outflow graft that directly measures flow through the CF-LVAD. We performed a simultaneous ramp RHC and echocardiogram on a patient who received the above CF-LVAD to optimize pump parameters and investigate elevated flow through the CF-LVAD as measured by the flow probe...
January 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28088844/role-of-contrast-ct-for-the-diagnosis-and-the-prognosis-of-suspected-lvad-thrombosis
#18
Bill C Tran, Prabhjot S Nijjar
BACKGROUND: There is an urgent need for further studies evaluating the role of imaging modalities in the management of left ventricular assist device (LVAD) thrombosis. This study reviews the role of computed tomography (CT) in the diagnosis of suspected LVAD thrombosis. METHODS: All contrast chest CTs performed in patients with suspected LVAD thrombosis at the University of Minnesota between January 2008 and April 2014 were reviewed. Significant CT findings were identified, operative notes were reviewed, and patient outcomes were reported...
February 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28070902/a-modified-lvad-technique-to-augment-caval-and-pulmonary-arterial-blood-flow-in-the-failing-fontan-circulation
#19
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...
February 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28033200/lvad-outflow-graft-angle-and-thrombosis-risk
#20
Alberto Aliseda, Venkat Keshav Chivukula, Patrick Mcgah, Anthony R Prisco, Jennifer A Beckman, Guilherme J M Garcia, Nahush A Mokadam, Claudius Mahr
This study quantifies thrombogenic potential (TP) of a wide range of left ventricular assist device (LVAD) outflow graft anastomosis angles through state-of-the-art techniques: 3D imaged-based patient-specific models created via virtual surgery and unsteady computational fluid dynamics with Lagrangian particle tracking. This study aims at clarifying the influence of a single parameter (outflow graft angle) on the thrombogenesis associated with flow patterns in the aortic root after LVAD implantation. This is an important and poorly-understood aspect of LVAD therapy, because several studies have shown strong inter and intrapatient thrombogenic variability and current LVAD implantation strategies do not incorporate outflow graft angle optimization...
January 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
keyword
keyword
46500
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"