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Ventricular assist

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https://www.readbyqxmd.com/read/29786701/lutembacher-syndrome-with-mitral-valve-calcification-in-a-31-year-old-male
#1
Arsalan Majeed Adam, Ansab Godil, Muhammad Saad Ali Mallick, Fahad Khan, Ather Hasan Rizvi, Inam-Ul-Haq Muhammad Makhdoom
Lutembacher syndrome is characterized by a congenital ostium secundum atrial septal defect and an acquired mitral valve stenosis. We present a similar case in a 31-year old male who came in with orthopnoea, central cyanosis and pedal oedema. Examination revealed cardiac murmurs in tricuspid and apical regions. Chest x-ray showed signs of pulmonary congestion and ventricular enlargement. Electrocardiogaphy (ECG) revealed right axis deviation and right bundle branch block along with atrial fibrillation and Transthoracic Echocardiography (TTE) showed abnormal valves (mitral stenosis with calcification and tricuspid regurgitation) and dilated cardiac chambers...
February 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29785544/heartmate-ii-implantation-technique-that-spares-the-sternum-and-ascending-aorta
#2
Masashi Kawabori, Chitaru Kurihara, Tadahisa Sugiura, Andrew B Civitello, Jeffrey A Morgan
Left ventricular assist devices (LVADs) have become the standard therapy for patients with end-stage heart failure, and the use of LVADs for long-term support has grown exponentially over the past decade. As the number of LVAD implantations has increased, surgeons have faced more challenging cases, such as those in which the patient has previously undergone a sternotomy. The HeartMate II is one of the most widely implanted LVADs. The standard procedure for HeartMate II implantation is median sternotomy and sewing the outflow graft to the ascending aorta...
May 21, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29785470/four-factor-prothrombin-complex-concentrate-for-warfarin-reversal-in-patients-with-left-ventricular-assist-devices
#3
Jessica Rimsans, Amy Levesque, Erin Lyons, Katelyn Sylvester, Michael M Givertz, Mandeep R Mehra, Garrick C Stewart, Jean M Connors
Continuous flow left ventricular assist devices (CF-LVAD) require therapeutic anticoagulation which is often interrupted for procedures or bleeding. Prior to the availability of four factor prothrombin complex concentrate (4F-PCC) in the United States, warfarin was held and its effects reversed by vitamin K or fresh frozen plasma. We evaluated the use of 4F-PCC for temporary warfarin reversal in patients with CF-LVADs and assessed outcomes. This analysis is a retrospective study of CF-LVAD patients who received 4F-PCC for warfarin reversal in the setting of bleeding or need for urgent or elective procedures...
May 21, 2018: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/29784052/the-effect-of-heart-failure-and-left-ventricular-assist-device-treatment-on-right-ventricular-mechanics-a-computational-study
#4
Jun I K Park, Aulia Khamas Heikhmakhtiar, Chang Hyun Kim, Yoo Seok Kim, Seong Wook Choi, Kwang Soup Song, Ki Moo Lim
BACKGROUND AND AIMS: Although it is important to analyze the hemodynamic factors related to the right ventricle (RV) after left ventricular assist device (LVAD) implantation, previous studies have focused only on the alteration of the ventricular shape and lack quantitative analysis of the various hemodynamic parameters. Therefore, we quantitatively analyzed various hemodynamic parameters related to the RV under normal, heart failure (HF), and HF incorporated with continuous flow LVAD therapy by using a computational model...
May 22, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29783995/bowel-obstruction-due-to-retained-intraperitoneal-left-ventricular-assist-device-lvad-driveline
#5
Daniel Miklin, Ivy Lewis, Howard Lieberman
BACKGROUND: Left ventricular assist devices (LVAD) provide a lifesaving bridge to cardiac transplant. Utilization of these devices is increasing in the United States. When a patient undergoes cardiac transplant, the left ventricular device is surgically removed and the driveline is extracted or left tunneled in the subcutaneous tissue. Our group encountered a rare and previously unreported complication of this device: intraperitoneal infiltration of a retained driveline after cardiac transplant causing a small bowel obstruction...
May 21, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29781049/effects-of-vitamin-k-epoxide-reductase-complex-1-gene-polymorphisms-on-warfarin-control-in-japanese-patients-with-left-ventricular-assist-devices-lvad
#6
Kazuki Nakagita, Kyoichi Wada, Yutaro Mukai, Takaya Uno, Ryoji Nishino, Sachi Matsuda, Hiromi Takenaka, Nobue Terakawa, Akira Oita, Mitsutaka Takada
PURPOSE: This study aimed to investigate relationships between times in therapeutic range (TTR) or warfarin sensitivity indexes (WSI) and VKORC1-1639G>A and CYP2C9 polymorphisms in patients with left ventricular assist devices (LVAD). METHODS: Severe heart failure patients who received LVAD from January 1, 2013 to October 31, 2017 were recruited. Relationships between TTR or WSI and VKORC1-1639G>A and CYP2C9 gene polymorphisms were investigated immediately after LVAD implantation (period 1) and immediately prior to hospital discharge (period 2)...
May 21, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29780073/early-lvad-implantation-in-a-patient-with-left-ventricular-failure-after-aortic-dissection-with-left-main-stem-involvement
#7
Hazem El Beyrouti, Angela Kornberger, Nancy Halloum, Andres Beiras-Fernandez, Christian-Friedrich Vahl
BACKGROUND: Coronary involvement in aortic dissection heralds a poor outcome. Involvement of the left main stem may lead to left ventricular (LV) failure requiring mechanical circulatory support. CASE REPORT: A staged approach was applied in a 24-year-old female who suffered extensive infarction due to aortic dissection with left main stem involvement. After replacement of the ascending aorta and grafting of the left internal thoracic artery to the left anterior descending artery following a failed attempt at reconstruction of the left coronary ostium, she failed to wean from cardiopulmonary bypass (CPB) and underwent implantation of an extracorporeal life support (ECLS) system as a bridge to decision...
May 21, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29780066/impella-5-0-as-a-bridge-to-implantable-left-ventricular-assist-device-first-clinical-case-in-japan
#8
Shohei Yoshida, Koichi Toda, Shigeru Miyagawa, Yasushi Yoshikawa, Hiroki Hata, Kei Torikai, Kazuo Shimamura, Shunsuke Saito, Keiwa Kin, Koichi Maeda, Keitaro Domae, Yoshiki Watanabe, Ryohei Matsuura, Kenta Masada, Shungo Hikoso, Isamu Mizote, Fusako Sera, Kei Nakamoto, Taito Masawa, Yasushi Sakata, Toru Kuratani, Yoshiki Sawa
No abstract text is available yet for this article.
May 18, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29778996/stent-and-flow-diverter-assisted-treatment-of-acutely-ruptured-brain-aneurysms
#9
José E Cohen, J Moshe Gomori, Ronen R Leker, Sergey Spektor, Hosni Abu El Hassan, Eyal Itshayek
OBJECTIVE: We present our experience with stent techniques in the management of acutely ruptured aneurysms, focusing on aneurysm occlusion rates, intraprocedural complications, and late outcomes. METHODS: We retrospectively reviewed the clinical records of patients treated by stent techniques during the early acute phase of aneurysmal rupture, from June 2011 to June 2016. Patients who underwent stenting for the management of unruptured aneurysms, or in a delayed fashion for a ruptured lesion, were excluded...
May 19, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29778631/staphylococcus-aureus-bloodstream-infection-in-patients-with-ventricular-assist-devices-management-and-outcome-in-a-prospective-bicenter-cohort
#10
Insa Joost, Wolfgang Bothe, Christine Pausch, Achim Kaasch, Berit Lange, Gabriele Peyerl-Hoffmann, Greta Flüh, Matthias Müller, Christian Schneider, Harald Seifert, Winfried V Kern, Friedhelm Beyersdorf, Siegbert Rieg
OBJECTIVES: Ventricular assist devices (VAD) are increasingly implanted in patients with terminal heart failure. Here we describe the clinical course, management and outcome of VAD patients with S. aureus bloodstream infection (SAB). METHODS: We conducted a post hoc analysis of data from 1073 patients who had been prospectively enrolled in two consecutive SAB bicenter cohort studies. Patients with VAD in situ at the onset of SAB were identified. Follow-up of patients was at least 90 days...
May 17, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29778335/postoperative-atrial-fibrillation-is-not-an-innocuous-arrhythmia-in-patients-with-left-ventricular-assist-devices
#11
EDITORIAL
Cipriano Abad, Stefano Urso, Bernardino Clavo
No abstract text is available yet for this article.
April 27, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29777372/cardiac-surgery-2017-reviewed
#12
REVIEW
Torsten Doenst, Hristo Kirov, Alexandros Moschovas, David Gonzalez-Lopez, Rauf Safarov, Mahmoud Diab, Steffen Bargenda, Gloria Faerber
For the year 2017, more than 21,000 published references can be found in PubMed when entering the search term "cardiac surgery". This review focusses on conventional cardiac surgery, considering the new interventional techniques only if they were directly compared to classic techniques but also entails aspects of perioperative intensive care management. The publications last year provided a plethora of new and interesting information that helped to quantify classic surgical treatment effects and provided new guidelines for the management of structural heart disease, which made comparisons to interventional techniques easier...
May 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29775554/outcomes-and-predictors-of-early-infection-after-heart-transplantation
#13
Kendall C Shultes, Jerrica E Shuster, Scott Micek, Justin M Vader, Keki Balsara, Akinobu Itoh, Bethany R Tellor
BACKGROUND: Limited data exist on the incidence and outcome of early infection after orthotopic heart transplantation (OHT). The purpose of this study was to describe characteristics and outcomes of OHT recipients with an early infection and to identify predictors of such infections. METHODS: This retrospective, single-center study included patients greater than 18 years of age who underwent OHT from February 2009 to May 2014 and had an infection within 30 days of transplantation...
May 18, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29774592/risk-factors-for-stroke-on-left-ventricular-assist-devices
#14
Muath Bishawi, Jeremy Joseph, Chetan Patel, Jacob Schroder, Mani Daneshmand, Dawn Bowles, Joseph Rogers, Carmelo Milano
BACKGROUND: Patients with end-stage heart failure on left ventricular assist devices (LVADs) are predisposed to a high incidence of stroke. Preoperative factors associated with increased stroke risk are poorly understood. METHODS: We performed a single-center retrospective review of all patients from 2009 to 2014 in whom a rotary flow LVAD was implanted. All patients with symptoms of a cerebrovascular event underwent a non-contrast head computed tomography scan...
May 17, 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29774558/clinical-outcome-and-comparison-of-three-different-left-ventricular-assist-devices-in-a-high-risk-cohort
#15
Konstantin Zhigalov, Ahmed Mashhour, Marcin Szczechowicz, Sabreen Mkalaluh, Sergei Karagezian, Irakli Gogia, Maxim Isaev, Bakitbek K Kadyraliev, Jerry Easo, Juergen Ennker, Harald C Eichstaedt, Alexander Weymann
We present a comparison between three left ventricular assist devices (LVADs): HeartWare (HVAD) (HeartWare International Inc., Framingham, MA, USA), HeartMate II (HMII) and HeartMate III (HMIII) (Thoratec Corp., Pleasanton, CA, USA). To our knowledge, no study to date has aimed at placing these three devices in juxtaposition. Between June 2007 and June 2017, 108 consecutive patients received HMII, n = 77 (71.3%), HVAD, n = 14 (13%), or HM III, n = 17 (15.7%), for end-stage heart failure. Mean age was 63...
May 17, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29774392/cost-effectiveness-of-ventricular-assist-device-destination-therapy-for-advanced-heart-failure-in-duchenne-muscular-dystrophy
#16
Defne A Magnetta, JaHyun Kang, Peter D Wearden, Kenneth J Smith, Brian Feingold
Destination ventricular assist device therapy (DT-VAD) is well accepted in select adults with medically refractory heart failure (HF) who are not transplant candidates; however, its use in younger patients with progressive diseases is unclear. We sought to evaluate the cost-effectiveness of DT-VAD in Duchenne muscular dystrophy (DMD) patients with advanced HF. We created a Markov-state transition model (5-year horizon) to compare survival, costs, and quality of life (QOL) between medical management and DT-VAD in DMD with advanced HF...
May 17, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29773577/determinants-and-outcomes-of-vasoplegia-following-left-ventricular-assist-device-implantation
#17
Kristen M Tecson, Brian Lima, Andy Y Lee, Fayez S Raza, Grace Ching, Cheng-Han Lee, Joost Felius, Ronald D Baxter, Sasha Still, Justin D G Collier, Shelley A Hall, Susan M Joseph
BACKGROUND: Vasoplegia is associated with adverse outcomes following cardiac surgery; however, its impact following left ventricular assist device implantation is largely unexplored. METHODS AND RESULTS: In 252 consecutive patients receiving a left ventricular assist device, vasoplegia was defined as the occurrence of normal cardiac function and index but with the need for intravenous vasopressors within 48 hours following surgery for >24 hours to maintain a mean arterial pressure >70 mm Hg...
May 17, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29770297/current-status-and-future-perspectives-of-the-pumpkin-trial
#18
REVIEW
Iki Adachi
Similar to the adult experience, the use of continuous-flow ventricular assist devices (VADs) has been increasing in the pediatric population. According to the PediMACS registry, continuous-flow VAD currently accounts for >60% of the durable device implantations in the U.S. Nonetheless, the continuous-flow VADs currently in use are designed for adults; this inevitably causes the patient-device size mismatch issue, especially when applied for small children. Pulsatile VADs, therefore, represent the only practical option for this group of patients despite the known risk profile of pulsatile VADs...
April 2018: Translational Pediatrics
https://www.readbyqxmd.com/read/29769417/lactate-in-cardiogenic-shock-current-understanding-and-clinical-implications
#19
G M Kubiak, A R Tomasik, K Bartus, R Olszanecki, P Ceranowicz
Adenosine triphosphate (ATP) is an essential substrate metabolite in human beings. Mitochondrial oxidative phosphorylation provides > 95% of ATP with the remainder derived from glycolysis or tricarboxylic acid cycle (TCA). In normal hearts, acetyl-CoA is synthesized from the β-oxidation of free fatty acids (FFA) and the oxidation of pyruvate. Pyruvate is synthesized from glycolysis and can be submitted either for decarboxylation to acetyl-CoA or for dehydrogenation to lactate. Moreover, pyruvate, as well as lactate, plays a key role in aerobic glucose metabolism which is highly dependent on ubiquitous regulatory mechanisms...
February 2018: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29768282/baseline-thromboelastogram-as-a-predictor-of-left-ventricular-assist-device-thrombosis
#20
Shannon L Piche, Scott D Nei, Erin Frazee, Sarah D Schettle, Barry A Boilson, Matthew F Plevak, Ross A Dierkhising, John M Stulak
Left ventricular assist device (LVAD) pump thrombosis occurs in up to 8.4% of patients within 3-months postimplantation. Thromboelastography (TEG) could be used to signal hypercoagulability at LVAD implantation to predict patients at high risk for thrombosis. We sought to evaluate whether TEG maximum amplitude (MA) hypercoagulability (MA ≥69 mm) at the time of LVAD implantation predicts pump thrombosis. A single center, retrospective, nested case-control study was conducted using patients from January 1, 2005, to March 31, 2015...
May 15, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
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