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https://www.readbyqxmd.com/read/28930049/experience-with-the-syncardia-total-artificial-heart-in-a-canadian-centre
#1
Anthony Nguyen, Michel Pellerin, Louis P Perrault, Michel White, Anique Ducharme, Normand Racine, Michel Carrier
BACKGROUND: The SynCardia total artificial heart (TAH) provides complete circulatory support by replacing both native ventricles. Accepted indications include bridge to transplantation and destination therapy. We review our experience with TAH implantation during a period when axial flow pump became available. METHODS: We retrospectively analyzed the demographics, clinical characteristics and survival of all patients receiving the TAH. RESULTS: From September 2004 to November 2016, 13 patients (12 men, mean age 45 ± 13 yr) received the TAH for refractory cardiogenic shock secondary to idiopathic (56%) or ischemic (17%) cardiomyopathy and to other various causes (33%)...
October 1, 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28929735/heart-repair-using-nanogel-encapsulated-human-cardiac-stem-cells-in-mice-and-pigs-with-myocardial-infarction
#2
Junnan Tang, Xiaolin Cui, Thomas G Caranasos, M Taylor Hensley, Adam C Vandergriff, Yusak Hartanto, Deliang Shen, Hu Zhang, Jinying Zhang, Ke Cheng
Stem cell transplantation is currently implemented clinically but is limited by low retention and engraftment of transplanted cells and the adverse effects of inflammation and immunoreaction when allogeneic or xenogeneic cells are used. Here, we demonstrate the safety and efficacy of encapsulating human cardiac stem cells (hCSCs) in thermosensitive poly(N-isopropylacrylamine-co-acrylic acid) or P(NIPAM-AA) nanogel in mouse and pig models of myocardial infarction (MI). Unlike xenogeneic hCSCs injected in saline, injection of nanogel-encapsulated hCSCs does not elicit systemic inflammation or local T cell infiltrations in immunocompetent mice...
September 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28927471/a-vascular-endothelial-growth-factor-a-genetic-variant-is-associated-with-improved-ventricular-function-and-transplant-free-survival-after-surgery-for-non-syndromic-chd
#3
Constantine D Mavroudis, Daniel Seung Kim, Nancy Burnham, Alexandra H Morss, Jerry H Kim, Amber A Burt, David R Crosslin, Donna M McDonald-McGinn, Elaine H Zackai, Meryl S Cohen, Susan C Nicolson, Thomas L Spray, Ian B Stanaway, Deborah A Nickerson, Mark W Russell, Hakon Hakonarson, Gail P Jarvik, J William Gaynor
BACKGROUND: We have previously shown that the minor alleles of vascular endothelial growth factor A (VEGFA) single-nucleotide polymorphism rs833069 and superoxide dismutase 2 (SOD2) single-nucleotide polymorphism rs2758331 are both associated with improved transplant-free survival after surgery for CHD in infants, but the underlying mechanisms are unknown. We hypothesised that one or both of these minor alleles are associated with better systemic ventricular function, resulting in improved survival...
September 20, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28925053/extracorporeal-membrane-oxygenation-can-save-lives-in-children-with-heart-or-lung-failure-after-liver-transplantation
#4
Sandrine Jean, Christophe Chardot, Mehdi Oualha, Carmen Capito, Olivier Bustarret, Philippe Pouard, Sylvain Renolleau, Florence Lacaille, Laurent Dupic
The risk of cardiac or lung failure after liver transplantation (LT) is significant. In rare cases, the usual intensive care techniques fail to maintain organ oxygenation with a risk of multiorgan dysfunction. Although extracorporeal membrane oxygenation (ECMO) is a difficult and risky procedure, it can be proposed as life-saving. Four children with either acute pulmonary (three) or cardiac (one) failure after LT, and the criteria that decided the use of ECMO (level of ventilation and results, dosage of inotropic drugs, cardiac ultrasound, blood lactate) were retrospectively reported...
September 2017: Artificial Organs
https://www.readbyqxmd.com/read/28924814/the-prognostic-value-of-heart-rate-response-during-vasodilator-stress-myocardial-perfusion-imaging-in-patients-with-end-stage-renal-disease-undergoing-renal-transplantation
#5
Wael AlJaroudi, Chiedozie Anokwute, Ibtihaj Fughhi, Tania Campagnoli, Marwan Wassouf, Aviral Vij, Michael Kharouta, Andrew Appis, Amjad Ali, Rami Doukky
BACKGROUND: In asymptomatic end-stage renal disease (ESRD) patients undergoing vasodilator stress myocardial perfusion imaging (MPI) prior to renal transplantation (RT), the impact of pre-transplant heart rate response (HRR) to vasodilator stress on post-RT outcomes is unknown. METHODS: We analyzed a retrospective cohort of asymptomatic patients with ESRD who underwent a vasodilator stress SPECT-MPI and subsequently received RT. Blunted HRR was defined as HRR <28% for regadenoson stress and <20% for adenosine stress...
September 18, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28924466/primary-cutaneous-cd4-positive-small-medium-sized-pleomorphic-t-cell-lymphoma-following-heart-transplantation
#6
B Shakerian, N Razavi, M H Mandegar
Post-transplantation cutaneous lymphoproliferative diseases (PTCLD) are rare, with 29 cases have so far been reported in the literature-only 4 cases underwent cardiac transplantation. Herein, we report on, to the best of our knowledge, the first case in the English literature of primary cutaneous CD4-positive small/medium-sized pleomorphic T-cell lymphoma in a cardiac transplant recipient.
2017: International Journal of Organ Transplantation Medicine
https://www.readbyqxmd.com/read/28923651/high-resolution-magic-angle-spinning-nuclear-magnetic-resonance-spectroscopy-for-the-metabolic-assessment-of-acute-rejection-after-cardiac-transplantation-in-rats
#7
C W Lee, J S Lee, C W Woo, S Kim
PURPOSE: To evaluate the potential of high-resolution magic angle spinning (HR-MAS) (1)H nuclear magnetic resonance (NMR) spectroscopy for metabolite characterization and the differentiation of acute rejection after heart transplantation in rat models. METHODS: We transplanted syngeneic heart grafts from Lewis rats (n = 4) and allogeneic heart grafts from F344 rats (n = 4) heterotopically into Lewis recipients. On day 7 postoperatively, the transplanted hearts were harvested for ex vivo (1)H NMR spectroscopy and HR-MAS (1)H NMR spectroscopy...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923645/comparison-of-segmental-versus-longitudinal-intravascular-ultrasound-analysis-for-pediatric-cardiac-allograft-vasculopathy
#8
M A Kuhn, M Burch, R E Chinnock, M J Fenton
Intravascular ultrasound (IVUS) has been routinely used in some centers to investigate cardiac allograft vasculopathy in pediatric heart transplant recipients. We present an alternative method using more sophisticated imaging software. This study presents a comparison of this method with an established standard method. All patients who had IVUS performed in 2014 were retrospectively evaluated. The standard technique consisted of analysis of 10 operator-selected segments along the vessel. Each study was re-evaluated using a longitudinal technique, taken at every third cardiac cycle, along the entire vessel...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923628/role-of-coronary-angiography-in-pre-liver-transplantation-cardiac-evaluation-experience-from-an-asian-transplant-institution
#9
N Q Pang, W C A Kow, J H Law, L T T Pan, B L K Lim, C C R Wong, K Y S Chang, I S Ganpathi, K Madhavan
BACKGROUND: Liver transplant (LT) patients with significant coronary artery disease (CAD) have poorer outcomes. Pre-LT coronary angiography (CA) is associated with significant complications in cirrhotic patients. METHODS: This study aimed to identify predictors of abnormal CA in pre-LT cardiac assessment and to develop a predictive model to reduce unnecessary CA. From January 2006 to June 2013, 122 patients underwent CA based on the current institutional protocol...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923627/associations-among-cardio-ankle-vascular-index-carotid-intima-media-thickness-and-fibroblast-growth-factor-21-levels-in-kidney-transplant-patients
#10
T Trakarnvanich, S Prommool, S Kurathong, T Teepprasan, Y Wang
BACKGROUND: Cardiovascular disease is the major cause of death in patients with chronic kidney disease, even after renal transplantation. Cardio-ankle vascular index (CAVI) provides an indicator of arterial stiffness, whereas fibroblast growth factor-21 (FGF-21) levels may provide a biomarker for atherosclerotic disease. We investigated the association between CAVI and FGF-21 and their relationships to carotid intima-media thickness (IMT) and other cardiovascular risk factors. METHODS: This study included 90 renal transplant patients...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28921168/chromosomal-abnormalities-affect-the-surgical-outcome-in-infants-with-hypoplastic-left-heart-syndrome-a-large-cohort-analysis
#11
Dala Zakaria, Xinyu Tang, Rupal Bhakta, Nahed O ElHassan, Parthak Prodhan
Patients with hypoplastic left heart syndrome (HLHS) can have associated genetic abnormalities. This study evaluated the incidence of genetic abnormalities among infants with HLHS and the short-term outcomes of this population during the first hospitalization. This is a retrospective analysis of the multi-center Pediatric Heath Information System database of infants with HLHS who underwent Stage I Norwood, Hybrid, or heart transplant during their first hospitalization from 2004 through 2013. We compared clinical data between infants with and without genetic abnormality, among the three most common chromosomal abnormalities, and between survivors and non-survivors...
September 18, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28919633/clinical-presentation-and-outcomes-in-light-chain-amyloidosis-patients-with-non-evaluable-serum-free-light-chains
#12
S Sidana, N Tandon, A Dispenzieri, M A Gertz, F K Buadi, M Q Lacy, D Dingli, A L Fonder, S R Hayman, M A Hobbs, W I Gonsalves, Y L Hwa, P Kapoor, R A Kyle, N Leung, R S Go, J A Lust, S J Russell, S R Zeldenrust, V Rajkumar, S K Kumar
Hematologic response criteria in light chain (AL) amyloidosis require the difference in involved and uninvolved free light chains (dFLC) to be at least 5 mg/dl. We describe the clinical presentation and outcomes of newly diagnosed amyloidosis patients with dFLC<5 mg/dl (non-evaluable dFLC; 14%, n=165) compared to patients with dFLC ⩾5 mg/dl (evaluable dFLC; 86%, n=975). Patients with non-evaluable dFLC had less cardiac involvement (40 vs 80%, P<0.001), less liver involvement (11 vs 17%, P=0.04) and a trend towards less gastrointestinal involvement (18 vs 25%, P=0...
September 18, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28917674/prognostic-value-of-risk-factors-calcium%C3%A2-score-coronary-cta-myocardial%C3%A2-perfusion-imaging-and-invasive%C3%A2-coronary-angiography-in-kidney%C3%A2-transplantation-candidates
#13
Simon Winther, My Svensson, Hanne Skou Jørgensen, Laust Dupont Rasmussen, Niels Ramsing Holm, Lars Christian Gormsen, Kirsten Bouchelouche, Hans Erik Bøtker, Per Ivarsen, Morten Bøttcher
OBJECTIVES: This study sought to perform a prospective head-to-head comparison of the predictive value of clinical risk factors and a variety of cardiac imaging modalities including coronary artery calcium score (CACS), coronary computed tomography angiography (CTA), single-photon emission computed tomography (SPECT), and invasive coronary angiography (ICA) on major adverse cardiac events (MACE) and all-cause mortality in kidney transplantation candidates. BACKGROUND: Current guidelines recommend screening for coronary artery disease in kidney transplantation candidates...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917560/outcomes-of-rescue-cardiopulmonary-support-for-periprocedural-acute-hemodynamic-decompensation-in-patients-undergoing-catheter-ablation-of-electrical-storm
#14
Andres Enriquez, Jackson Liang, Javier Gentile, Robert Schaller, Gregory Supple, David S Frankel, Fermin Garcia, Joyce Wald, Edo Y Birati, J Eduardo Rame, Christian Bermudez, David Callans, Francis Marchlinski, Pasquale Santangeli
BACKGROUND: In patients with ventricular tachycardia/fibrillation (VT/VF) electrical storm (ES) undergoing catheter ablation (CA), hypotension due to refractory VT/VF, use of anesthesia and cardiac stunning due to repeated ICD shocks might precipitate acute hemodynamic decompensation (AHD). OBJECTIVE: We evaluated the outcomes of emergent cardiopulmonary support with extracorporeal membrane oxygenation (ECMO) to rescue AHD in patients undergoing CA of ES. METHODS: Between 2010 and 2016, 21 patients with ES (VT in 11 and PVC-triggered VF in 10) were referred for CA and had periprocedural AHD requiring emergent ECMO support...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28917558/cardiac-sympathectomy-for-the-management-of-ventricular-arrhythmias-refractory-to-catheter-ablation
#15
Travis Richardson, Ricardo Lugo, Pablo Saavedra, George Crossley, Walter Clair, Sharon Shen, Juan Carlos Estrada, Jay Montgomery, M Benjamin Shoemaker, Christopher Ellis, Gregory F Michaud, Eric Lambright, Arvindh Kanagasundram
BACKGROUND: Catheter ablation is now a mainstay of therapy for ventricular arrhythmias (VA). However, there are scenarios where either physiologic or anatomical factors make ablation less likely to be successful. OBJECTIVES: To demonstrate that cardiac sympathetic denervation (CSD) may be an alternate therapy for patients with difficult to ablate VA. METHODS: We identified all patients referred for CSD at a single center for indications other than LQTS and CPVT who had failed catheter ablation...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28917555/incidence-and-significance-of-adhesions-encountered-during-epicardial-mapping-and-ablation-of-ventricular-tachycardia-in-patients-with-no-history-of-prior-cardiac-surgery-or-pericarditis
#16
Anthony Li, Eric Buch, Noel G Boyle, Kalyanam Shivkumar, Jason S Bradfield
BACKGROUND: Pericardial adhesions can prevent epicardial access and restrict catheter movement during mapping and ablation of ventricular tachycardia (VT) . The incidence of adhesions in patients without prior cardiac surgery or clinically evident pericarditis is not known. OBJECTIVE: To describe the incidence of pericardial adhesions in patients without prior cardiac surgery or pericarditis and explore their impact. METHODS: A retrospective search of our ablation database containing patients who underwent epicardial ablation for VT was undertaken...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28915632/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#17
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28913397/cardiac-transplant-due-to-metal-toxicity-associated-with-hip-arthroplasty
#18
Sheldon Moniz, Sean Hodgkinson, Piers Yates
Concerns regarding metal-on-metal (MoM) bearing couples in total hip arthroplasty are well documented in the literature with cobalt (Co) and chromium (Cr) toxicity causing a range of both local and systemic adverse reactions. We describe the case of a patient undergoing cardiac transplantation as a direct result of Co and Cr toxicity following a MoM hip replacement. Poor implant positioning led to catastrophic wear generating abundant wear particles leading to Co and Cr toxicity, metallosis, bony destruction, elevated metal ion levels, and adverse biological responses...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28912844/triptolide-inhibits-cd4-memory-t-cell-mediated-acute-rejection-and-prolongs-cardiac-allograft-survival-in-mice
#19
Shuiwei Qiu, Dingliang Lv
There have been numerous investigations into the immunosuppressive effects of triptolide; however, its inhibitory effects on memory T cells remain to be elucidated. Using a cluster of differentiation (CD)4(+) memory T-cell transfer model, the aim of the present study was to determine the inhibitory effects of triptolide on CD4(+) memory T cell-mediated acute rejection and to determine the potential underlying mechanisms. At 4 weeks after skin transplantation, mouse cervical heart transplantation was performed following the transfer of CD4(+) memory T cells...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28912262/diastolic-pressure-difference-to-classify-pulmonary-hypertension-in-the-assessment-of-heart-transplant-candidates
#20
Stephen P Wright, Yasbanoo Moayedi, Farid Foroutan, Suhail Agarwal, Geraldine Paradero, Ana C Alba, Jay Baumwol, Susanna Mak
BACKGROUND: The diastolic pressure difference (DPD) is recommended to differentiate between isolated postcapillary and combined pre-/postcapillary pulmonary hypertension (Cpc-PH) in left heart disease (PH-LHD). However, in usual practice, negative DPD values are commonly calculated, potentially related to the use of mean pulmonary artery wedge pressure (PAWP). We used the ECG to gate late-diastolic PAWP measurements. We examined the method's impact on calculated DPD, PH-LHD subclassification, hemodynamic profiles, and mortality...
September 2017: Circulation. Heart Failure
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