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Results: 1 to 10 of 72

Publication Record


New onset diabetes mellitus after heart transplantation in children is a common but potentially modifiable burden.
Moore DJ
(2016) Pediatr Transplant 20: 886-887
MeSH Terms: Child, Diabetes Mellitus, Heart Transplantation, Humans, Immunosuppressive Agents, Kidney Transplantation, Risk Factors
Added October 12, 2016
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1 Members
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7 MeSH Terms
Hp: an inflammatory indicator in cardiovascular disease.
Graves KL, Vigerust DJ
(2016) Future Cardiol 12: 471-81
MeSH Terms: Antioxidants, Atherosclerosis, Biomarkers, Cardiovascular Diseases, Genotype, Graft Rejection, Haptoglobins, Heart Failure, Heart Transplantation, Humans, Iron, Myocardial Infarction, Prognosis
Show Abstract · Added May 21, 2016
Over the past decade significant advancement has occurred in the biological and pathological role that Hp has in cardiovascular disease. Hp is an acute-phase protein with a role in the neutralization and clearance of free heme. Iron has tremendous potential for initiating vascular oxidation, inflammation and exacerbating coronary atherosclerosis. Hp genotype has been linked as a prognostic biomarker of acute myocardial infarction, heart failure, restenosis and cardiac transplant rejection. The increased understanding of Hp as a biomarker has provided new insights into the mechanisms of inflammation after cardiac injury and support the concept that Hp is not only an important antioxidant in vascular inflammation and atherosclerosis, but also an enhancer of inflammation in cardiac transplant.
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13 MeSH Terms
Incidence and early outcomes associated with pre-transplant antivimentin antibodies in the cardiac transplantation population.
Young RK, Dale B, Russell SD, Zachary AA, Tedford RJ
(2015) Clin Transplant 29: 685-8
MeSH Terms: Adult, Autoantibodies, Baltimore, Female, Follow-Up Studies, Graft Rejection, Graft Survival, Heart Diseases, Heart Transplantation, Humans, Incidence, Male, Postoperative Complications, Prognosis, Retrospective Studies, Risk Factors, Survival Rate, Vimentin
Show Abstract · Added September 7, 2017
BACKGROUND - In cardiac transplant recipients, the development of antibodies to the endothelial intermediate filament protein vimentin (antivimentin antibodies, AVA) has been associated with rejection and poor outcomes. However, the incidence of these antibodies prior to transplantation and their association with early rejection has not been investigated.
METHODS - Pre-transplant serum was analyzed from 50 patients who underwent de novo cardiac transplant at Johns Hopkins Hospital from 2004 to 2012. Demographic, one-yr rejection, and survival data were obtained from the transplant database.
RESULTS - The incidence of pre-transplant AVA was 34%. AVA-positive patients were younger (p = 0.03), and there was an a trend toward incidence in females (p = 0.08). Demographic data were similar among both groups. AVA positivity did not predict rejection in the first year post-transplant. There was no difference in rejection-free graft survival (53 vs. 52%, p = 0.85) at one yr. Similarly, there was no difference in graft survival at one yr (82 vs. 88%, p = 0.56) or graft survival at a median follow-up of 23 and 26 months, respectively (76 vs. 85%, p = 0.41).
CONCLUSIONS - AVA is common in the cardiac pre-transplant population with a higher incidence in the young. The presence of detectable AVA did not correlate with early post-transplant rejection or graft survival.
© 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
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18 MeSH Terms
Pharmacogenomics: personalizing pediatric heart transplantation.
Van Driest SL, Webber SA
(2015) Circulation 131: 503-12
MeSH Terms: Child, Heart Diseases, Heart Transplantation, Humans, Pediatrics, Pharmacogenetics, Precision Medicine, TOR Serine-Threonine Kinases, Tacrolimus
Added April 11, 2017
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1 Members
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9 MeSH Terms
Immediate recovery of acquired von Willebrand syndrome after left ventricular assist device explantation: implications for heart transplantation.
Davis ME, Haglund NA, Tricarico NM, Matafonov A, Gailani D, Maltais S
(2015) ASAIO J 61: e1-4
MeSH Terms: Heart Transplantation, Heart-Assist Devices, Humans, Male, Middle Aged, Molecular Weight, Myxovirus Resistance Proteins, Postoperative Hemorrhage, Shock, Cardiogenic, von Willebrand Diseases, von Willebrand Factor
Show Abstract · Added January 20, 2015
All patients supported with continuous flow-left ventricular assist devices (CF-LVADs) develop acquired von Willebrand syndrome due to the loss of von Willebrand factor (vWF) high molecular weight (HMW) multimers and this phenomenon has been associated with clinical manifestation of bleeding diatheses. The precise timing of postoperative recovery of HMW multimers and correction of this condition after CF-LVAD explantation and heart transplantation is unknown. We sought to determine the specific timing of HMW multimer recovery by serially quantifying plasma vWF multimer ratios after CF-LVAD explant and orthotopic heart transplantation (OHT) in a patient implanted with a HeartWare ventricular assist device. Using densitometric analysis of multimer patterns, we demonstrated complete recovery of HMW multimers within the first few hours following CF-LVAD explant and OHT. These findings have critical implications in the context of perioperative bleeding diatheses in patients bridged to transplantation with a CF-LVAD.
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11 MeSH Terms
Does renal dysfunction and method of bridging support influence heart transplant graft survival?
Haglund NA, Feurer ID, Dwyer JP, Stulak JM, DiSalvo TG, Keebler ME, Schlendorf KH, Wigger MA, Maltais S
(2014) Ann Thorac Surg 98: 835-41
MeSH Terms: Adolescent, Adult, Aged, Cardiotonic Agents, Female, Graft Survival, Heart Failure, Heart Transplantation, Heart-Assist Devices, Humans, Male, Middle Aged, Preoperative Care, Renal Insufficiency, Retrospective Studies, Risk Factors, Severity of Illness Index, Young Adult
Show Abstract · Added October 28, 2014
BACKGROUND - Renal insufficiency is common in status 1B patients supported with inotropes or a continuous flow left ventricular device (CF-LVAD) as a bridge to heart transplantation. We evaluated the association of renal function and inotrope versus CF-LVAD support on posttransplant graft survival in status 1B patients.
METHODS - The Scientific Registry for Transplant Recipients database was analyzed for posttransplant survival in status 1B patients bridged with inotropes or CF-LVAD who underwent transplantation between 2003 and 2012. Pretransplant renal function was measured by estimating glomerular filtration rate (GFR) and was stratified as less than 45 mL · min(-1) · 1.73 m(-2), 45 to 59, and 60 or greater. Univariate Kaplan-Meier and multivariate Cox regression models were used to evaluate the main effects of GFR strata and inotropes versus CF-LVAD, and the interaction effect of GFR strata by CF-LVAD, on graft survival.
RESULTS - This study included 4,158 status 1B patients (74% male, aged 53 ± 12 years). Of those, 659 patients had a CF-LVAD (HeartMate-II [Thoratec, Pleasanton, CA], n = 638; HVAD [HeartWare, Framingham, MA], n = 21), and 3,530 were receiving inotropes (31 CF-LVAD patients were also receiving inotropes). Kaplan-Meier analyses demonstrated reduced graft survival (p = 0.022) in patients with pretransplant GFR less than 45 versus GFR 45 to 59 (p = 0.062) and versus GFR 60 or greater (p = 0.007), and no effect of inotrope versus CF-LVAD support on graft survival (p = 0.402). Multivariate analysis demonstrated that, after adjusting for the main effects of GFR stratum, CF-LVAD, and inotropes, status 1B patients bridged with a CF-LVAD and GFR in the lowest stratum had reduced graft survival (interaction effect p = 0.040).
CONCLUSIONS - Pretransplant renal insufficiency was associated with reduced posttransplant graft survival in status 1B patients. This risk is increased for patients bridged with a CF-LVAD (versus inotropes) who have GFR in the lowest stratum.
Copyright © 2014 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
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18 MeSH Terms
Are peripherally inserted central catheters associated with increased risk of adverse events in status 1B patients awaiting transplantation on continuous intravenous milrinone?
Haglund NA, Cox ZL, Lee JT, Song Y, Keebler ME, DiSalvo TG, Maltais S, Lenihan DJ, Wigger MA
(2014) J Card Fail 20: 630-7
MeSH Terms: Academic Medical Centers, Cardiotonic Agents, Catheter-Related Infections, Catheterization, Central Venous, Catheterization, Peripheral, Female, Heart Failure, Heart Transplantation, Heart-Assist Devices, Hemorrhage, Humans, Infusions, Intravenous, Intensive Care Units, Male, Middle Aged, Milrinone, Regression Analysis, Retrospective Studies, Tennessee, Venous Thromboembolism, Waiting Lists
Show Abstract · Added February 19, 2015
BACKGROUND - Peripherally inserted central catheters (PICCs) are used to deliver continuous intravenous (IV) milrinone in stage D heart failure (HF) patients awaiting heart transplantation (HT).
METHODS - We retrospectively analyzed PICC adverse events (AEs) and associated cost in 129 status 1B patients from 2005 to 2012. End points were HT, left ventricular assist device (LVAD), and death. Regression analysis was used to identify AE risk factors.
RESULTS - Fifty-three PICC AEs occurred in 35 patients (27%), consisting of 48 infections, 4 thromboses, and 1 bleeding event. Median duration of PICC support was 63 (interquartile range [IQR] 34-131) days, and median time to first PICC infection was 44 (IQR 14-76) days. Among PICC infections, 9% required defibrillator removal and 30% were inactivated on the HT list for a mean of 23 ± 17 days. Rate of HT, LVAD, or death was similar between groups (P > .05). Regression analysis found that a double lumen PICC was associated with a shorter time to first PICC infection (hazard ratio 7.59, 95% CI 1.97-29.23; P = .003). Median cost per PICC infection was $10,704 (IQR $7,401-$26,083).
CONCLUSIONS - PICC infections were the most frequent AEs. PICCs with >1 lumen were associated with increased risk of infection. PICC AEs accounted for increased intensive care unit admissions, HT list inactivations, and overall cost.
Copyright © 2014 Elsevier Inc. All rights reserved.
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21 MeSH Terms
Institutional volume of heart transplantation with left ventricular assist device explantation influences graft survival.
Haglund NA, Feurer ID, Ahmad RM, DiSalvo TG, Lenihan DJ, Keebler ME, Schlendorf KH, Stulak JM, Wigger MA, Maltais S
(2014) J Heart Lung Transplant 33: 931-6
MeSH Terms: Adolescent, Adult, Aged, Device Removal, Female, Graft Rejection, Graft Survival, Heart Failure, Heart Transplantation, Heart-Assist Devices, Hospitals, Low-Volume, Humans, Incidence, Male, Middle Aged, Multivariate Analysis, Registries, Retrospective Studies, Survival Rate, Treatment Outcome, Ventricular Dysfunction, Left, Young Adult
Show Abstract · Added February 19, 2015
BACKGROUND - There are increasing numbers of patients undergoing orthotopic heart transplantation (OHT) with left ventricular assist device (LVAD) explantation (LVAD explant-OHT). We hypothesized that LVAD explant-OHT is a more challenging surgical procedure compared to OHT without LVAD explantation and that institutional LVAD explant-OHT procedural volume would be associated with post-transplant graft survival. We sought to assess the impact of institutional volume of LVAD explant-OHT on post-transplant graft survival.
METHODS - This is a retrospective analysis of the Scientific Registry of Transplant Recipients for adult OHTs with long-term LVAD explantation. LVAD explant-OHT volume was characterized on the basis of the center's year-specific total OHT volume (OHTvol) and year-specific LVAD explant-OHT volume quartile (LVADvolQ). The effect of LVADvolQ on graft survival (death or re-transplantation) was analyzed.
RESULTS - From 2004 to 2011, 2,681 patients underwent OHT with LVAD explantation (740 with HeartMate XVE, 1,877 with HeartMate II and 64 with HeartWare devices). LVAD explant-OHT at centers falling in the lowest LVADvolQ was associated with reduced post-transplant graft survival (p = 0.022). After adjusting for annualized OHTvol (HR = 0.998, 95% CI 0.993 to 1.003, p = 0.515 and pulsatile XVE (HR = 0.842, 95% CI 0.688 to 1.032, p = 0.098), multivariate analysis confirmed a significantly (approximately 37%) increased risk of post-transplant graft failure among explant-OHT procedures occurring at centers in the lowest volume quartile (HR = 1.371, 95% CI 1.030 to 1.825, p = 0.030).
CONCLUSION - Graft survival is decreased when performed at centers falling in the lowest quartile of LVAD explant-OHT for a given year. This volume-survival relationship should be considered in the context of limited donor organ availability and the rapidly growing number of LVAD centers.
Copyright © 2014 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.
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22 MeSH Terms
Combined usage of stem cells in end-stage heart failure therapies.
Wang X, Zachman AL, Haglund NA, Maltais S, Sung HJ
(2014) J Cell Biochem 115: 1217-24
MeSH Terms: Bone Marrow Cells, Cell Differentiation, Cell- and Tissue-Based Therapy, Guided Tissue Regeneration, Heart, Heart Failure, Heart Transplantation, Humans, Myocardium, Myocytes, Cardiac, Stem Cell Transplantation, Stem Cells
Show Abstract · Added May 29, 2014
Remarkable achievements have been made in the clinical application of mechanical circulatory support and cardiac transplantation for patients with end-stage heart failure. Despite the successes, complications associated with these therapies continue to drive cardiac regenerative research utilizing stem cell based therapies. Multiple stem cell lineages hold clinical promise for cardiac regeneration-mostly through cellular differentiation, cellular fusion, and paracrine signaling mechanisms. Bone marrow-derived endothelial progenitor cells are among the most intriguing and controversial cell types currently being investigated. Formidable barriers exist, however, in finding the ideal cardiac regenerative stem cell, such as identifying specific lineage markers, optimizing in vitro cellular expansion and improving methods of stem cell delivery. Hybrid approaches of cardiac regeneration using stem cell therapies in conjunction with immunomodulation after cardiac transplantation or with mechanical circulatory support produce cutting edge stem cell technologies. This review summarizes the current knowledge and therapeutic applications of stem cells in patients with end-stage heart failure, including stem cell therapy after implantation of mechanical circulatory support and cardiac transplantation.
© 2014 Wiley Periodicals, Inc.
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12 MeSH Terms
Clinical predictors of autoimmune and severe atopic disease in pediatric heart transplant recipients.
Mouledoux JH, Albers EL, Lu Z, Saville BR, Moore DJ, Dodd DA
(2014) Pediatr Transplant 18: 197-203
MeSH Terms: Adolescent, Autoimmune Diseases, Child, Child, Preschool, Female, Heart Failure, Heart Transplantation, Humans, Hypersensitivity, Immediate, Immunosuppressive Agents, Infant, Infant, Newborn, Male, Molecular Sequence Data, Retrospective Studies, Risk Factors
Show Abstract · Added May 27, 2014
Autoimmune and allergic diseases cause morbidity and diminished quality of life in pediatric organ transplant recipients. We hypothesize that younger age at transplantation and immunosuppression regimen play a role in the development of immune-mediated disease following heart transplant. A single institution retrospective review identified all patients undergoing heart transplant at ≤18 yr of age from 1987 to 2010 who survived ≥1 yr. Using medical record and database review, patients were evaluated for development of autoimmune or severe allergic disease. Of 129 patients who met criteria, seven patients (5.4%) with autoimmune or severe atopic disease were identified. Immune-mediated diseases included inflammatory bowel disease (n = 3), eosinophilic esophagitis/colitis (n = 4), and chronic bullous disease of childhood (n = 1). Patients <1 yr of age at transplant were at greater risk of developing autoimmune disease than patients 1-18 yr at transplant (OR = 9.3, 95% CI 1.1-79.2, p = 0.02). All affected patients underwent thymectomy at <1 yr of age (7/71 vs. 0/58, p = 0.02). In our experience, heart transplantation in infancy is associated with the development of immune-mediated gastrointestinal and dermatologic diseases. Further study is needed to determine risk factors for the development of immune-mediated disease to identify best practices to decrease incidence.
© 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
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16 MeSH Terms