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Kikano S, Lee S, Dodd D, Godown J, Bearl D, Chrisant M, Chan KC, Nandi D, Damon B, Samyn MM, Yan K, Crum K, George-Durrett K, Hernandez L, Soslow JH. Cardiac magnetic resonance assessment of acute rejection and cardiac allograft vasculopathy in pediatric heart transplant. J Heart Lung Transplant 2024; 43:745-754. [PMID: 38141894 PMCID: PMC11070308 DOI: 10.1016/j.healun.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 11/04/2023] [Accepted: 12/14/2023] [Indexed: 12/25/2023] Open
Abstract
BACKGROUND In pediatric heart transplant (PHT), cardiac catheterization with endomyocardial biopsy (EMB) is standard for diagnosing acute rejection (AR) and cardiac allograft vasculopathy (CAV) but is costly and invasive. OBJECTIVES To evaluate the ability of cardiac magnetic resonance (CMR) to noninvasively identify differences in PHT patients with AR and CAV. METHODS Patients were enrolled at three children's hospitals. Data were collected from surveillance EMB or EMB for-cause AR. Patients were excluded if they had concurrent diagnoses of AR and CAV, CMR obtained >7days from AR diagnosis, they had EMB negative AR, or could not undergo contrasted, unsedated CMR. Kruskal-Wallis test was used to compare groups: (1) No AR or CAV (Healthy), (2) AR, (3) CAV. Wilcoxon rank-sum test was used for pairwise comparisons. RESULTS Fifty-nine patients met inclusion criteria (median age 17years [IQR 15-19]) 10 (17%) with AR, and 11 (19%) with CAV. AR subjects had worse left ventricular ejection fraction compared to Healthy patients (p = 0.001). Global circumferential strain (GCS) was worse in AR (p = 0.054) and CAV (p = 0.019), compared to Healthy patients. ECV, native T1, and T2 z-scores were elevated in patients with AR. CONCLUSIONS CMR was able to identify differences between CAV and AR. CAV subjects had normal global function but abnormal GCS which may suggest subclinical dysfunction. AR patients have abnormal function and tissue characteristics consistent with edema (elevated ECV, native T1 and T2 z-scores). Characterization of CMR patterns is critical for the development of noninvasive biomarkers for PHT and may decrease dependence on EMB.
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Affiliation(s)
- Sandra Kikano
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Simon Lee
- The Heart Center, Nationwide Children's Hospital, Columbus, Ohio
| | - Debra Dodd
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Justin Godown
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - David Bearl
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Maryanne Chrisant
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida
| | - Kak-Chen Chan
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida
| | - Deipanjan Nandi
- The Heart Center, Nationwide Children's Hospital, Columbus, Ohio
| | - Bruce Damon
- Carle Foundation Hospital/University of Illinois, Urbana, Illinois
| | - Margaret M Samyn
- Herma Heart Institute, Children's Wisconsin/Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Ke Yan
- Division of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Kimberly Crum
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kristen George-Durrett
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Lazaro Hernandez
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida
| | - Jonathan H Soslow
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
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Quinn BP, Gunnelson LC, Kotin SG, Gauvreau K, Yeh MJ, Hasan B, Lozier J, Barry OM, Shahanavaz S, Batlivala SP, Salavitabar A, Foerster S, Goldstein B, Divekar A, Holzer R, Nicholson GT, O'Byrne ML, Whiteside W, Bergersen L. Catheterization for Congenital Heart Disease Adjustment for Risk Method II. Circ Cardiovasc Interv 2024; 17:e012834. [PMID: 38258562 DOI: 10.1161/circinterventions.123.012834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 12/08/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Current metrics used to adjust for case mix complexity in congenital cardiac catheterization are becoming outdated due to the introduction of novel procedures, innovative technologies, and expanding patient subgroups. This study aims to develop a risk adjustment methodology introducing a novel, clinically meaningful adverse event outcome and incorporating a modern understanding of risk. METHODS Data from diagnostic only and interventional cases with defined case types were collected for patients ≤18 years of age and ≥2.5 kg at all Congenital Cardiac Catheterization Project on Outcomes participating centers. The derivation data set consisted of cases performed from 2014 to 2017, and the validation data set consisted of cases performed from 2019 to 2020. Severity level 3 adverse events were stratified into 3 tiers by clinical impact (3a/b/c); the study outcome was clinically meaningful adverse events, severity level ≥3b (3bc/4/5). RESULTS The derivation data set contained 15 224 cases, and the validation data set included 9462 cases. Clinically meaningful adverse event rates were 4.5% and 4.2% in the derivation and validation cohorts, respectively. The final risk adjustment model included age <30 days, Procedural Risk in Congenital Cardiac Catheterization risk category, and hemodynamic vulnerability score (C statistic, 0.70; Hosmer-Lemeshow P value, 0.83; Brier score, 0.042). CONCLUSIONS CHARM II (Congenital Heart Disease Adjustment for Risk Method II) risk adjustment methodology allows for equitable comparison of clinically meaningful adverse events among institutions and operators with varying patient populations and case mix complexity performing pediatric cardiac catheterization.
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Affiliation(s)
- Brian P Quinn
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
| | - Lauren C Gunnelson
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
| | - Sarah G Kotin
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
| | - Kimberlee Gauvreau
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
| | - Mary J Yeh
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
| | - Babar Hasan
- Division of Cardio-Thoracic Sciences, Sindh Institute of Urology and Transplantation, Pakistan (B.H.)
| | - John Lozier
- Division of Pediatric Cardiology, UH Rainbow Babies and Children's Hospital, Cleveland, OH (J.L.)
| | - Oliver M Barry
- Division of Pediatric Cardiology, Columbia University Medical Center, New York Presbyterian/Morgan Stanley Children's Hospital (O.M.B.)
| | - Shabana Shahanavaz
- Cincinnati Children's Hospital-Heart Institute and Department of Pediatrics, University of Cincinnati College of Medicine, OH (S.S., S.P.B.)
| | - Sarosh P Batlivala
- Cincinnati Children's Hospital-Heart Institute and Department of Pediatrics, University of Cincinnati College of Medicine, OH (S.S., S.P.B.)
| | - Arash Salavitabar
- The Heart Center, Nationwide Children's Hospital, Columbus, OH (A.S.)
| | - Susan Foerster
- Division of Pediatric Cardiology, Children's Wisconsin, Milwaukee (S.F.)
| | - Bryan Goldstein
- Heart Institute, UPMC Children's Hospital of Pittsburgh and Department of Pediatrics, University of Pittsburgh School of Medicine, PA (B.G.)
| | - Abhay Divekar
- Division of Pediatric Cardiology, UT Southwestern Medical Center, Children's Medical Center Dallas, TX (A.D.)
| | - Ralf Holzer
- Division of Pediatric Cardiology, Department of Pediatrics, University of California Davis, Sacramento (R.H.)
| | - George T Nicholson
- Division of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt University Medical Center, Nashville, TN (G.T.N.)
| | - Michael L O'Byrne
- Division of Cardiology, Children's Hospital of Philadelphia and Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania (M.L.O.)
| | - Wendy Whiteside
- Division of Pediatric Cardiology, University of Michigan Medical School, Ann Arbor (W.W.)
| | - Lisa Bergersen
- Department of Cardiology, Boston Children's Hospital, MA (B.P.Q., L.C.G., S.G.K., K.G., M.J.Y., L.B.)
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3
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Yao Y, Bian W, Zhang H, Ji X, Wang Z. Quantitative cardiac MRI parameters for assessment of myocarditis in children and adolescents: a systematic review and meta-analysis. Clin Radiol 2023:S0009-9260(23)00230-1. [PMID: 37365114 DOI: 10.1016/j.crad.2023.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/18/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023]
Abstract
AIM To evaluate the role of quantitative cardiac magnetic resonance imaging (CMRI) parameters in myocarditis, including acute and chronic myocarditis (AM and CM), for children and adolescents. MATERIALS AND METHODS PRISMA principles were followed. PubMed, EMBASE, Web of Science, Cochrane Library, and grey literature were searched. The Newcastle-Ottawa Scale (NOS) and the Agency for Healthcare Research and Quality (AHRQ) checklist were utilised for quality assessment. Quantitative CMRI parameters were extracted and a meta-analysis was performed in comparison with healthy controls. The overall effect size was measured as the weighted mean difference (WMD). RESULTS Ten quantitative CMRI parameters of seven studies were analysed. Compared with the control group, the myocarditis group reported longer native T1 relaxation time (WMD=54.00, 95% confidence interval [CI]: 33.21,74.79, p<0.001), longer T2 relaxation time (WMD=2.13, 95% CI: 0.98, 3.28, p<0.001), increased extracellular volume (ECV; WMD=3.13, 95% CI: 1.34,4.91, p=0.001), elevated early gadolinium enhancement (EGE) ratio (WMD=1.47, 95% CI: 0.65,2.28, p<0.001), and increased T2-weighted ratio (WMD=0.43, 95% CI: 0.21,0.64, p<0.001). The AM group had longer native T1 relaxation times (WMD=72.02, 95% CI: 32.78,111.27, p<0.001), increased T2-weighted ratios (WMD=0.52, 95% CI: 0.21,0.84 p=0.001), and impaired left ventricular ejection fractions (LVEF; WMD=-5.84, 95% CI: -9.69, -1.99, p=0.003). Impaired LVEF (WMD=-2.24, 95% CI: -3.32, -1.17, p<0.001) was observed in the CM group. CONCLUSION Statistical differences can be observed in some CMRI parameters between patients with myocarditis and healthy controls; however, apart from native T1 mapping, there were no large differences in other parameters between two groups, which may reveal the limited benefit of CMRI in assessing myocarditis in children and adolescents.
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Affiliation(s)
- Y Yao
- Department of Radiology, Jiaxing Maternal and Child Health Hospital, Jiaxing, Zhejiang 314000, China
| | - W Bian
- Department of Radiology, Jiaxing Maternal and Child Health Hospital, Jiaxing, Zhejiang 314000, China
| | - H Zhang
- Department of Radiology, Jiaxing Maternal and Child Health Hospital, Jiaxing, Zhejiang 314000, China
| | - X Ji
- Department of Pediatrics, Jiaxing Maternal and Child Health Hospital, Jiaxing, Zhejiang 314000, China.
| | - Z Wang
- Department of Radiology, Jiaxing Maternal and Child Health Hospital, Jiaxing, Zhejiang 314000, China
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Deshpande SR, Kennedy KF, Martin GR. Elective and non-elective endomyocardial biopsy in heart transplant patients and procedural outcomes: An IMPACT registry analysis. Pediatr Transplant 2023; 27:e14482. [PMID: 36860141 DOI: 10.1111/petr.14482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/17/2022] [Accepted: 01/24/2023] [Indexed: 03/03/2023]
Abstract
BACKGROUND Endomyocardial biopsies are standard of care for transplant surveillance, however the procedural risks are not well established, especially in children. The purpose of the study was therefore to assess procedural risks and outcomes associated with elective (surveillance) biopsies and non-elective (clinically indicated) biopsies. METHODS We used the NCDR IMPACT registry database for this retrospective analysis. Patients undergoing an endomyocardial biopsy were identified using the procedural code, with a diagnosis of heart transplantation required. Data regarding indication, hemodynamics, adverse events and outcomes was gathered and analyzed. RESULTS A total of 32 547 endomyocardial biopsies were performed between 2012-2020; 31 298 (96.5%) elective and 1133 (3.5%) were non-elective biopsies. Non-elective biopsy was more commonly performed in infants and in those above 18 years of age, in female and in Black race patients and in those with non-private insurance (all p < .05) and showed hemodynamic derangements. Overall rate of complications was low. Combined major adverse events were more common in non-elective patients, with sicker patient profile, use of general anesthesia and femoral access with overall decline in these events over time. CONCLUSIONS This large-scale analysis shows safety of surveillance biopsies and that non-elective biopsies carry a small but significant risk of major adverse event. Patient profile impacts the safety of the procedure. These data may serve as important comparison point for newer non-invasive tests and for bench marking, especially in children.
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Affiliation(s)
- Shriprasad R Deshpande
- Pediatric Cardiology Division, Children's National Heart Institute, Children's National Hospital, George Washington University, Washington, District of Columbia, USA
| | - Kevin F Kennedy
- Department of Cardiovascular Research, Saint Luke's Hospital, Kansas City, Missouri, USA
| | - Gerard R Martin
- Pediatric Cardiology Division, Children's National Heart Institute, Children's National Hospital, George Washington University, Washington, District of Columbia, USA
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Richmond ME, Deshpande SR, Zangwill SD, Bichell DP, Kindel SJ, Mahle WT, Schroder JN, Wigger MA, Knecht KR, Pahl E, Gaglianello NA, Goetsch MA, Simpson P, Dasgupta M, Zhang L, North PE, Tomita-Mitchell A, Mitchell ME. Validation of donor fraction cell-free DNA with biopsy-proven cardiac allograft rejection in children and adults. J Thorac Cardiovasc Surg 2023; 165:460-468.e2. [PMID: 35643770 PMCID: PMC9617812 DOI: 10.1016/j.jtcvs.2022.04.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 04/04/2022] [Accepted: 04/19/2022] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Donor-specific cell-free DNA shows promise as a noninvasive marker for allograft rejection, but as yet has not been validated in both adult and pediatric recipients. The study objective was to validate donor fraction cell-free DNA as a noninvasive test to assess for risk of acute cellular rejection and antibody-mediated rejection after heart transplantation in pediatric and adult recipients. METHODS Pediatric and adult heart transplant recipients were enrolled from 7 participating sites and followed for 12 months or more with plasma samples collected immediately before all endomyocardial biopsies. Donor fraction cell-free DNA was extracted, and quantitative genotyping was performed. Blinded donor fraction cell-free DNA and clinical data were analyzed and compared with a previously determined threshold of 0.14%. Sensitivity, specificity, negative predictive value, positive predictive value, and receiver operating characteristic curves were calculated. RESULTS A total of 987 samples from 144 subjects were collected. After applying predefined clinical and technical exclusions, 745 samples from 130 subjects produced 54 rejection samples associated with the composite outcome of acute cellular rejection grade 2R or greater and pathologic antibody-mediated rejection 2 or greater and 323 healthy samples. For all participants, donor fraction cell-free DNA at a threshold of 0.14% had a sensitivity of 67%, a specificity of 79%, a positive predictive value of 34%, and a negative predictive value of 94% with an area under the curve of 0.78 for detecting rejection. When analyzed independently, these results held true for both pediatric and adult cohorts at the same threshold of 0.14% (negative predictive value 92% and 95%, respectively). CONCLUSIONS Donor fraction cell-free DNA at a threshold of 0.14% can be used to assess for risk of rejection after heart transplantation in both pediatric and adult patients with excellent negative predictive value.
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Affiliation(s)
- Marc E Richmond
- Division of Pediatric Cardiology, Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY.
| | - Shriprasad R Deshpande
- Division of Pediatric Cardiology, Children's National Heart Institute, Children's National Hospital, Washington, DC
| | | | - David P Bichell
- Division of Pediatric Cardiac Surgery, Department of Surgery, Vanderbilt University, Nashville, Tenn
| | - Steven J Kindel
- Division of Pediatric Cardiology, Department of Pediatrics, Medical College of Wisconsin, Herma Heart Institute, Children's Wisconsin, Milwaukee, Wis
| | - William T Mahle
- Division of Cardiology, Department of Pediatrics, Emory University, Children's Healthcare of Atlanta, Atlanta, Ga
| | - Jacob N Schroder
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University, Durham, NC
| | - Mark A Wigger
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University, Nashville, Tenn
| | - Kenneth R Knecht
- Department of Pediatrics, Arkansas Children's Hospital, Little Rock, Ark
| | | | | | - Mary A Goetsch
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wis
| | - Pippa Simpson
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wis
| | - Mahua Dasgupta
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wis
| | - Liyun Zhang
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wis
| | - Paula E North
- Department of Pathology, Medical College of Wisconsin, Children's Wisconsin, Milwaukee, Wis
| | - Aoy Tomita-Mitchell
- Division of Pediatric Cardiothoracic Surgery, Department of Surgery, Medical College of Wisconsin, Herma Heart Institute, Milwaukee, Wis
| | - Michael E Mitchell
- Division of Pediatric Cardiothoracic Surgery, Department of Surgery, Medical College of Wisconsin, Herma Heart Institute, Milwaukee, Wis
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Wells DA, Morales DLS. Commentary: Set me free-cell-free DNA may soon provide reprieve to pediatric heart transplant recipients. J Thorac Cardiovasc Surg 2023; 165:469-470. [PMID: 35715272 DOI: 10.1016/j.jtcvs.2022.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 05/17/2022] [Accepted: 05/24/2022] [Indexed: 01/18/2023]
Affiliation(s)
- Dennis A Wells
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - David L S Morales
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022; 42:e1-e141. [PMID: 37080658 DOI: 10.1016/j.healun.2022.10.015] [Citation(s) in RCA: 73] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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8
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Richmann DP, Gurijala N, Mandell JG, Doshi A, Hamman K, Rossi C, Rosenberg AZ, Cross R, Kanter J, Berger JT, Olivieri L. Native T1 mapping detects both acute clinical rejection and graft dysfunction in pediatric heart transplant patients. J Cardiovasc Magn Reson 2022; 24:51. [PMID: 36192743 PMCID: PMC9531384 DOI: 10.1186/s12968-022-00875-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 07/19/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Cardiovascular magnetic resonance (CMR) is emerging as an important tool for cardiac allograft assessment. Native T1 mapping may add value in identifying rejection and in assessing graft dysfunction and myocardial fibrosis burden. We hypothesized that CMR native T1 values and features of textural analysis of T1 maps would identify acute rejection, and in a secondary analysis, correlate with markers of graft dysfunction, and with fibrosis percentage from endomyocardial biopsy (EMB). METHODS Fifty cases with simultaneous EMB, right heart catheterization, and 1.5 T CMR with breath-held T1 mapping via modified Look-Locker inversion recovery (MOLLI) in 8 short-axis slices and subsequent quantification of mean and peak native T1 values, were performed on 24 pediatric subjects. A single mid-ventricular slice was used for image texture analysis using nine gray-level co-occurrence matrix features. Digital quantification of Masson trichrome stained EMB samples established degree of fibrosis. Markers of graft dysfunction, including serum brain natriuretic peptide levels and hemodynamic measurements from echocardiography, catheterization, and CMR were collated. Subjects were divided into three groups based on degree of rejection: acute rejection requiring new therapy, mild rejection requiring increased ongoing therapy, and no rejection with no change in treatment. Statistical analysis included student's t-test and linear regression. RESULTS Peak and mean T1 values were significantly associated with acute rejection, with a monotonic trend observed with increased grade of rejection. Texture analysis demonstrated greater spatial heterogeneity in T1 values, as demonstrated by energy, entropy, and variance, in cases requiring treatment. Interestingly, 2 subjects who required increased therapy despite low grade EMB results had abnormal peak T1 values. Peak T1 values also correlated with increased BNP, right-sided filling pressures, and capillary wedge pressures. There was no difference in histopathological fibrosis percentage among the 3 groups; histopathological fibrosis did not correlate with T1 values or markers of graft dysfunction. CONCLUSION In pediatric heart transplant patients, native T1 values identify acute rejection requiring treatment and may identify graft dysfunction. CMR shows promise as an important tool for evaluation of cardiac grafts in children, with T1 imaging outperforming biopsy findings in the assessment of rejection.
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Affiliation(s)
| | - Nyshidha Gurijala
- George Washington University School of Medicine, Washington, D.C., USA
| | | | - Ashish Doshi
- Johns Hopkins University Children's Center, Baltimore, MD, USA
| | - Karin Hamman
- Children's National Hospital, Washington, D.C., USA
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10
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Molecular Approaches and Echocardiographic Deformation Imaging in Detecting Myocardial Fibrosis. Int J Mol Sci 2022; 23:ijms231810944. [PMID: 36142856 PMCID: PMC9501415 DOI: 10.3390/ijms231810944] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/11/2022] [Accepted: 09/16/2022] [Indexed: 12/25/2022] Open
Abstract
The pathological remodeling of myocardial tissue is the main cause of heart diseases. Several processes are involved in the onset of heart failure, and the comprehension of the mechanisms underlying the pathological phenotype deserves special attention to find novel procedures to identify the site of injury and develop novel strategies, as well as molecular druggable pathways, to counteract the high degree of morbidity associated with it. Myocardial fibrosis (MF) is recognized as a critical trigger for disruption of heart functionality due to the excessive accumulation of extracellular matrix proteins, in response to an injury. Its diagnosis remains focalized on invasive techniques, such as endomyocardial biopsy (EMB), or may be noninvasively detected by cardiac magnetic resonance imaging (CMRI). The detection of MF by non-canonical markers remains a challenge in clinical practice. During the last two decades, two-dimensional (2D) speckle tracking echocardiography (STE) has emerged as a new non-invasive imaging modality, able to detect myocardial tissue abnormalities without specifying the causes of the underlying histopathological changes. In this review, we highlighted the clinical utility of 2D-STE deformation imaging for tissue characterization, and its main technical limitations and criticisms. Moreover, we focalized on the importance of coupling 2D-STE examination with the molecular approaches in the clinical decision-making processes, in particular when the 2D-STE does not reflect myocardial dysfunction directly. We also attempted to examine the roles of epigenetic markers of MF and hypothesized microRNA-based mechanisms aiming to understand how they match with the clinical utility of echocardiographic deformation imaging for tissue characterization and MF assessment.
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11
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Belay W, Godown J, Chan KC, Bearl DW, George-Durrett K, Slaughter JC, Crum K, Dodd DA, Chrisant M, Hernandez L, Soslow J. Cardiac magnetic resonance diastolic indices correlate with ventricular filling pressures in pediatric heart transplant recipients. Pediatr Transplant 2022; 26:e14332. [PMID: 35686585 DOI: 10.1111/petr.14332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Atrial and ventricular filling pressures are routinely used in pediatric heart transplant (PHTx) recipients to assess graft function. We hypothesized that cardiac magnetic resonance (CMR) diastolic indices correlate with filling pressures, providing a noninvasive method of hemodynamic assessment. METHODS Pediatric heart transplant recipients were prospectively enrolled at the time of cardiac catheterization. Pulmonary capillary wedge pressure (PCWP) and right atrial pressure (RAP) were measured. CMR included standard volumetric analysis. Filling curves were calculated by contouring every phase in the short-axis stack. Global longitudinal and circumferential strain (GLS, GCS) were calculated using feature tracking. Atrial volumes and ejection fraction were calculated from 4-chamber and 2-chamber cine images. Correlations were analyzed using Spearman's Rho; modeling was performed with multivariable logistic regression. RESULTS A total of 35 patients with a mean age of 15.5 years were included, 12 with acute rejection. The median time post-transplant was 6.2 years. Peak filling rate (PFR) and peak LV ejection rate/end-diastolic volume (PER/EDV) correlated with PCWP (rho = 0.48 p = .005, and rho = -0.35 p = .046, respectively) as did GLS and GCS (rho = 0.52 p = .002, and 0.40 p = .01). Indexed maximum and minimum left atrial (LA) volume correlated with PCWP (rho = 0.41, p = .01, rho = 0.41 p = .01), and LA ejection fraction inversely correlated with PCWP (rho = -0.40, p = .02). GLS and GCS correlated with RAP (rho = 0.55, p = .001 and rho = 0.43, p = .01). A model including LV GLS and PFR estimated PCWP ≥12 mmHg with an area under the curve of 0.84. CONCLUSIONS Cardiac magnetic resonance can be a useful noninvasive modality to assess for signs of diastolic dysfunction after PHTx.
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Affiliation(s)
- Wubishet Belay
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Justin Godown
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kak-Chen Chan
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida, USA
| | - David W Bearl
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kristen George-Durrett
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - James C Slaughter
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kimberly Crum
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Debra A Dodd
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Maryanne Chrisant
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida, USA
| | - Lazaro Hernandez
- Department of Pediatric Cardiology, Joe DiMaggio Children's Hospital at Memorial Healthcare System, Hollywood, Florida, USA
| | - Jonathan Soslow
- Thomas P. Graham Jr. Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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12
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Callegari A, Quandt D, Schmitz A, Klingel K, Balmer C, Dave H, Kretschmar O, Knirsch W. Findings and Outcome of Transcatheter Right Ventricular Endomyocardial Biopsy and Hemodynamic Assessment in Children with Suspected Myocarditis or Cardiomyopathy. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10406. [PMID: 36012045 PMCID: PMC9408529 DOI: 10.3390/ijerph191610406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The study objective is assessing findings and outcome in children with suspected cardiomyopathy (CMP) or myocarditis undergoing cardiac catheterization with transcatheter right ventricular endomyocardial biopsy (RV-EMB). METHODS All consecutive children undergoing cardiac catheterization with RV-EMB for suspected CMP/myocarditis between 2002-2021 were analysed regarding clinical presentation, cardiac biomarkers, periprocedural management, hemodynamic, histological/immunohistological findings, and outcome. RESULTS Eighty-five RV-EMBs were performed in 81 patients at a median age of 6.8 (IQR 9.9) years and a bodyweight of 20 (32.2) kg. Histological/immunohistological findings of RV-EMB revealed dilated CMP in 10 (12%), chronic myocarditis in 28 (33%), healing myocarditis in 5 (6%), acute myocarditis in 9 (11%), other heart muscle diseases in 23 (27%) (7 restrictive CMP, 5 hypertrophic CMP, 4 toxic/anthracycline-induced CMP, 4 endocardfibroelastosis, 1 arrhythmogenic right ventricular CMP, 1 laminin CMP, 1 haemangioma), no conclusive histology in 7 (8%), and normal histology in 3 (4%) patients. Median LVEDP was 17 mmHg (IQR 9), LAP 15 mmHg (10), and PVR 1.83 (1.87) Wood Units/m2. There were 3 major complications (3%), all patients recovered without any sequelae. At follow-up (median 1153, IQR 1799 days) 47 (59%) patients were alive, 11 (13%) dead, 15 (18%) underwent cardiac transplantation, and 8 (9%) were lost to follow-up. Death/cardiac transplantation occurred within 3 years from RV-EMB. All patients with an acute myocarditis survived. NT-pro-BNP, echo parameters, and invasive hemodynamics correlate independently with death/cardiac transplant. CONCLUSION Hemodynamic invasive data and morphological findings in RV-EMB complete clinical diagnosis in children with suspected CMP/myocarditis and provide important information for further clinical management.
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Affiliation(s)
- Alessia Callegari
- Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Daniel Quandt
- Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Achim Schmitz
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
- Division of Anesthesia, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Karin Klingel
- Cardiopathology, Institute for Pathology, Eberhard Karls University Tübingen, 72074 Tubingen, Germany
| | - Christian Balmer
- Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Hitendu Dave
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
- Congenital Cardiovascular Surgery, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Oliver Kretschmar
- Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Walter Knirsch
- Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Centre, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
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13
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Deshpande SR, Zangwill SD, Kindel SJ, Schroder JN, Bichell DP, Wigger MA, Richmond ME, Knecht KR, Pahl E, Gaglianello NA, Mahle WT, Stamm KD, Simpson PM, Dasgupta M, Zhang L, North PE, Tomita-Mitchell A, Mitchell ME. Relationship between donor fraction cell-free DNA and clinical rejection in heart transplantation. Pediatr Transplant 2022; 26:e14264. [PMID: 35258162 DOI: 10.1111/petr.14264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/19/2022] [Accepted: 02/23/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Clinical rejection (CR) defined as decision to treat clinically suspected rejection with change in immunotherapy based on clinical presentation with or without diagnostic biopsy findings is an important part of care in heart transplantation. We sought to assess the utility of donor fraction cell-free DNA (DF cfDNA) in CR and the utility of serial DF cfDNA in CR patients in predicting outcomes of clinical interest. METHODS Patients with heart transplantation were enrolled in two sequential, multi-center, prospective observational studies. Blood samples were collected for surveillance or clinical events. Clinicians were blinded to the results of DF cfDNA. RESULTS A total of 835 samples from 269 subjects (57% pediatric) were included for this analysis, including 28 samples associated with CR were analyzed. Median DF cfDNA was 0.43 (IQR 0.15, 1.36)% for CR and 0.10 (IQR 0.07, 0.16)% for healthy controls (p < .0001). At cutoff value of 0.13%, the area under curve (AUC) was 0.82, sensitivity of 0.86, specificity of 0.67, and negative predictive value of 0.99. There was serial decline in DF cfDNA post-therapy, however, those with cardiovascular events (cardiac arrest, need for mechanical support or death) showed significantly higher levels of DF cfDNA on Day 0 (2.11 vs 0.31%) and Day 14 (0.51 vs 0.22%) compared to those who did not have such an event (p < .0001). CONCLUSION DF cfDNA has excellent agreement with clinical rejection and, importantly, serial measurement of DF cfDNA predict clinically significant outcomes post treatment for rejection in these patients.
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Affiliation(s)
- Shriprasad R Deshpande
- Division of Pediatric Cardiology, Children's National Heart Institute, Children's National Hospital, Washington, District of Columbia, USA
| | - Steven D Zangwill
- Division of Cardiology, Phoenix Children's Hospital, Phoenix, Arizona, USA
| | - Steven J Kindel
- Division of Pediatric Cardiology, Department of Pediatrics, Medical College of Wisconsin, Herma Heart Institute, Children's Wisconsin, Milwaukee, Wisconsin, USA
| | - Jacob N Schroder
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University, Durham, North Carolina, USA
| | - David P Bichell
- Division of Pediatric Cardiac Surgery, Department of Surgery, Vanderbilt University, Nashville, Tennessee, USA
| | - Mark A Wigger
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - Marc E Richmond
- Department of Pediatrics, Division of Pediatric Cardiology, College of Physicians and Surgeons, Columbia University, New York, New York, USA
| | - Kenneth R Knecht
- Department of Pediatrics, Arkansas Children's Hospital, Little Rock, Arkansas, USA
| | - Elfriede Pahl
- Emeritus of Pediatrics, Cardiology, Lurie Children's Hospital, Chicago, Illinois, USA
| | | | - William T Mahle
- Division of Cardiology, Department of Pediatrics, Emory University, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Karl D Stamm
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Pippa M Simpson
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Mahua Dasgupta
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Liyun Zhang
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Paula E North
- Department of Pathology, Medical College of Wisconsin, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, USA
| | - Aoy Tomita-Mitchell
- Division of Pediatric Cardiothoracic Surgery, Department of Surgery, Medical College of Wisconsin, Herma Heart Institute, Milwaukee, Wisconsin, USA
| | - Michael E Mitchell
- Division of Pediatric Cardiothoracic Surgery, Department of Surgery, Medical College of Wisconsin, Herma Heart Institute, Children's Wisconsin, Milwaukee, Wisconsin, USA
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14
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Power A, Baez Hernandez N, Dipchand AI. Rejection surveillance in pediatric heart transplant recipients: Critical reflection on the role of frequent and long-term routine surveillance endomyocardial biopsies and comprehensive review of non-invasive rejection screening tools. Pediatr Transplant 2022; 26:e14214. [PMID: 35178843 DOI: 10.1111/petr.14214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Despite significant medical advances in the field of pediatric heart transplantation (HT), acute rejection remains an important cause of morbidity and mortality. Endomyocardial biopsy (EMB) remains the gold-standard method for diagnosing rejection but is an invasive, expensive, and stressful process. Given the potential adverse consequences of rejection, routine post-transplant rejection surveillance protocols incorporating EMB are widely employed to detect asymptomatic rejection. Each center employs their own specific routine rejection surveillance protocol, with no consensus on the optimal approach and with high inter-center variability. The utility of high-frequency and long-term routine surveillance biopsies (RSB) in pediatric HT has been called into question. METHODS Sources for this comprehensive review were primarily identified through searches in biomedical databases including MEDLINE and Embase. RESULTS The available literature suggests that the diagnostic yield of RSB is low beyond the first year post-HT and that a reduction in RSB intensity from high-frequency to low-frequency can be done safely with no impact on early and mid-term survival. Though there are emerging non-invasive methods of detecting asymptomatic rejection, the evidence is not yet strong enough for any test to replace EMB. CONCLUSION Overall, pediatric HT centers in North America should likely be doing fewer RSB than are currently performed. Risk factors for rejection should be considered when designing the optimal rejection surveillance strategy. Noninvasive testing including emerging biomarkers may have a complementary role to aid in safely reducing the need for RSB.
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Affiliation(s)
- Alyssa Power
- Department of Pediatrics, UT Southwestern Medical Center and Children's Medical Center, Dallas, Texas, USA
| | - Nathanya Baez Hernandez
- Department of Pediatrics, UT Southwestern Medical Center and Children's Medical Center, Dallas, Texas, USA
| | - Anne I Dipchand
- Department of Pediatrics, University of Toronto, Hospital for Sick Children, Toronto, Ontario, Canada
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15
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Feingold B, Rose-Felker K, West SC, Zinn MD, Berman P, Moninger A, Huston A, Stinner B, Xu Q, Zeevi A, Miller SA. Early findings after integration of donor-derived cell-free DNA into clinical care following pediatric heart transplantation. Pediatr Transplant 2022; 26:e14124. [PMID: 34420244 DOI: 10.1111/petr.14124] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/23/2021] [Accepted: 08/13/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Endomyocardial biopsy (EMB) is costly and discomforting yet remains a key component of surveillance after pediatric heart transplantation (HT). Donor-derived cell-free DNA (dd-cfDNA) has been histologically validated with high negative predictive value, offering an alternative to surveillance EMB (sEMB). METHODS We implemented an alternative surveillance protocol using commercially available dd-cfDNA assays in place of sEMB after pediatric HT. Recipients ≧7 months post-HT with reassuring clinical assessment were referred for dd-cfDNA. When not elevated above the manufacturers' threshold, sEMB was deferred. Subsequent clinical status and results of follow-up EMB were analyzed. RESULTS Over 17 months, 58 recipients [34% female, median age at HT 3.1 years (IQR 0.6-10.6)] had dd-cfDNA assessed per protocol. Median age was 14.8 years (8.4-18.3) and time from HT 6.0 years (2.2-11.2). Forty-seven (81%) had non-elevated dd-cfDNA and 11 (19%) were elevated. During a median of 8.7 months (4.2-15), all are alive without allograft loss/new dysfunction. Among those with non-elevated dd-cfDNA, 24 (51%) had subsequent sEMB at 12.1 months (6.9-12.9) with 23 showing no acute rejection (AR): grade 0R/pAMR0 (n = 16); 1R(1A)/pAMR0 (n = 7). One had AR (grade 2R(3A)/pAMR0) on follow-up sEMB after decreased immunosuppression following a diagnosis of PTLD. All 11 with elevated dd-cfDNA had reflex EMB at 19 days (12-32) with AR in 4: grade 1R(1B-2)/pAMR0 (n = 3); 1R(1B)/pAMR2 (n = 1). CONCLUSIONS dd-cfDNA assessment in place of selected, per-protocol EMB decreased surveillance EMB by 81% in our pediatric HT recipient cohort with no short-term adverse outcomes. Individual center approach to surveillance EMB will influence the utility of these findings.
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Affiliation(s)
- Brian Feingold
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Clinical and Translational Science, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Kirsten Rose-Felker
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Shawn C West
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Matthew D Zinn
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Pamela Berman
- Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Allison Moninger
- Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Allison Huston
- Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Brenda Stinner
- Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Qingyong Xu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Adriana Zeevi
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Susan A Miller
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
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16
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Duong SQ, Zhang Y, Hall M, Hollander SA, Thurm CW, Bernstein D, Feingold B, Godown J, Almond C. Impact of institutional routine surveillance endomyocardial biopsy frequency in the first year on rejection and graft survival in pediatric heart transplantation. Pediatr Transplant 2021; 25:e14035. [PMID: 34003559 DOI: 10.1111/petr.14035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/11/2021] [Accepted: 04/21/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Routine surveillance biopsy (RSB) is performed to detect asymptomatic acute rejection (AR) after heart transplantation (HT). Variation in pediatric RSB across institutions is high. We examined center-based variation in RSB and its relationship to graft loss, AR, coronary artery vasculopathy (CAV), and cost of care during the first year post-HT. METHODS We linked the Pediatric Health Information System (PHIS) and Scientific Registry of Transplant Recipients (SRTR, 2002-2016), including all primary-HT aged 0-21 years. We characterized centers by RSB frequency (defined as median biopsies performed among recipients aged ≥12 months without rejection in the first year). We adjusted for potential confounders and center effects with mixed-effects regression analysis. RESULTS We analyzed 2867 patients at 29 centers. After adjusting for patient and center differences, increasing RSB frequency was associated with diagnosed AR (OR 1.15 p = 0.004), a trend toward treated AR (OR 1.09 p = 0.083), and higher hospital-based cost (US$390 315 vs. $313 248, p < 0.001) but no difference in graft survival (HR 1.00, p = 0.970) or CAV (SHR 1.04, p = 0.757) over median follow-up 3.9 years. Center RSB-frequency threshold of ≥2/year was associated with increased unadjusted rates of treated AR, but no association was found at thresholds greater than this. CONCLUSION Center RSB frequency is positively associated with increased diagnosis of AR at 1 year post-HT. Graft survival and CAV appear similar at medium-term follow-up. We speculate that higher frequency RSB centers may have increased detection of clinically less important AR, though further study of the relationship between center RSB frequency and differences in treated AR is necessary.
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Affiliation(s)
- Son Q Duong
- Pediatrics (Cardiology), Stanford University School of Medicine, Palo Alto, California, USA
| | - Yulin Zhang
- Pediatrics (Cardiology), Stanford University School of Medicine, Palo Alto, California, USA
| | - Matt Hall
- Children's Hospital Association, Lenexa, Kansas, USA
| | - Seth A Hollander
- Pediatrics (Cardiology), Stanford University School of Medicine, Palo Alto, California, USA
| | - Cary W Thurm
- Children's Hospital Association, Lenexa, Kansas, USA
| | - Daniel Bernstein
- Pediatrics (Cardiology), Stanford University School of Medicine, Palo Alto, California, USA
| | - Brian Feingold
- Pediatrics (Cardiology) and Clinical Translational Science, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Justin Godown
- Pediatrics (Cardiology), Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Christopher Almond
- Pediatrics (Cardiology), Stanford University School of Medicine, Palo Alto, California, USA
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17
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Balakrishnan KR, Rao KGS, Subramaniam GK, Tanguturu MK, Arvind A, Ramanan V, Dhushyanthan J, Ramasubramanian K, Kumaran KS, Sellamuthu G, Rajam M, Mettur S, Gnansekharan P, Ratnagiri R. Clinical profiles and risk factors for early and medium-term mortality following heart transplantation in a pediatric population: A single-center experience. Ann Pediatr Cardiol 2021; 14:42-52. [PMID: 33679060 PMCID: PMC7918032 DOI: 10.4103/apc.apc_129_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/30/2020] [Accepted: 11/27/2020] [Indexed: 11/24/2022] Open
Abstract
AIMS AND OBJECTIVES There is a paucity of data regarding the outcomes of Heart transplantation in children from the Indian subcontinent. The data of patients under the age of 18 undergoing an isolated heart transplantation was analyzed for patient clinical profiles and risk factors for early and medium-term mortality. Hospital mortality was defined as death within 90 days of transplantation and medium-term survival as follow up of up to 6 years. MATERIALS AND METHODS A total of 97 patients operated between March 2014 and October 2019 were included in this study. Data was collected about their INTERMACS status, pulmonary vascular resistance, donor heart ischemic times, donor age, donor to recipient weight ratio and creatinine levels. RESULTS The age range was from 1 to 18 with a mean of 10.6 ± 4.6 years. 67 % patients were in INTERMACS category 3 or less.12 children were on mechanical circulatory support at the time of transplant. The 90 day survival was 89 %. The risk factors for hospital mortality was lower INTERMACS category (odd's ratio 0.2143, P = 0.026), elevated creatinine (odd's ratio 5.42, P = 0.076) and elevated right atrial pressure (odd's ratio 1.19, P = 0.015). Ischemic time, pulmonary vascular resistance (PVR) and PVR index (PVRI) had no effect on 90 day survival. Kaplan Meier estimates for 5 year survival was 73 %. The medium term survival was affected by INTERMACS category (Hazard ratio 0.7, P = .078), donor age > 25 (Hazard ratio 1.6, P = 0.26) and raised serum creatinine values.(Hazard ratio 2.7, P = 0.012). All the survivors are in good functional class. CONCLUSIONS Excellent outcomes are possible after heart transplantation in a pediatric population even in a resource constrained environment of a developing economy. More efforts are needed to promote pediatric organ donation and patients need to be referred in better INTERMACS category for optimal outcomes.
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Affiliation(s)
- Komarakshi R. Balakrishnan
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Kemundel Genny Suresh Rao
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Ganapathy Krishnan Subramaniam
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Murali Krishna Tanguturu
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Ajay Arvind
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Veena Ramanan
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Jagdish Dhushyanthan
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - K. Ramasubramanian
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - K. Suresh Kumaran
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Gunalan Sellamuthu
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Mohan Rajam
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Senthil Mettur
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Pradeep Gnansekharan
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
| | - Ravikumar Ratnagiri
- Department of Pediatric Cardiac Surgery, Institute of Heart and Lung Transplantation, MGM Health Care, Chennai, Tamil Nadu, India
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18
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Abstract
Myocarditis in the pediatric population can be a challenging diagnosis to make and often requires utilization of multiple diagnostic modalities. The cause is often due to a viral infection with activation of the innate and acquired immune response with either recovery or disease progression. Laboratory testing often includes inflammatory markers, cardiac troponin levels, and natriuretic peptides. Noninvasive testing should include electrocardiogram, echocardiogram, and possibly an MRI. Treatment of myocarditis remains controversial with most providers using immune modulators with intravenous immunoglobulin and corticosteroids.
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19
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Nandi D, Chin C, Schumacher KR, Fenton M, Singh RK, Lin KY, Conway J, Cantor RS, Koehl DA, Lamour JM, Kirklin JK, Pahl E. Surveillance for cardiac allograft vasculopathy: Practice variations among 50 pediatric heart transplant centers. J Heart Lung Transplant 2020; 39:1260-1269. [PMID: 32861553 DOI: 10.1016/j.healun.2020.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/13/2020] [Accepted: 08/02/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Coronary allograft vasculopathy (CAV) is a leading cause of mortality after heart transplantation (HT) in children. Variation in CAV screening practices may impact detection rates and patient outcomes. METHODS Among 50 Pediatric Heart Transplant Society (PHTS) sites from 2001 to 2016, coronary evaluations were classified as angiography or non-invasive testing, and angiograms were designated as routine or symptom based. CAV detection rates stratified by routine vs symptom-based angiograms were calculated. Freedom from CAV and mortality after CAV diagnosis, stratified by study indication, were calculated. RESULTS A total of 3,442 children had 13,768 coronary evaluations; of these, 97% (n = 13,012) were for routine surveillance, and only 3% (n = 333) were for cause. Over the study period, CAV was detected in 472 patients (14%). Whereas 58% (n = 29) of PHTS sites evaluate by angiography alone, 42% reported supplementing with a non-invasive test, although only 423 non-invasive studies were reported. Angiographic detection of CAV was higher for symptom-based testing than for routine testing (29% vs 4%, p < 0.0001), although routine testing identified a majority of cases (88%; n = 414). The 10-year freedom from CAV was 77% overall. Once CAV is detected, 5-year graft survival was 58%, with lower survival for patients diagnosed after symptoms angiogram than after routine angiogram (30% vs 62%; p < 0.0001). CONCLUSIONS Development of a robust model for CAV risk should allow low-risk patients to undergo less frequent invasive angiography without adverse impact on CAV detection rates or outcomes.
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Affiliation(s)
- Deipanjan Nandi
- Department of Pediatrics, Division of Cardiology, Nationwide Children's Hospital, Columbus, Ohio.
| | - Clifford Chin
- Department of Pediatrics, Division of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kurt R Schumacher
- Department of Pediatrics, Division of Cardiology, C S Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan
| | - Matthew Fenton
- Department of Pediatrics, Division of Cardiology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Rakesh K Singh
- Department of Pediatrics, Division of Cardiology, Hassenfeld Children's Hospital at NYU Langone, New York, New York
| | - Kimberly Y Lin
- Department of Pediatrics, Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jennifer Conway
- Department of Pediatrics, Division of Cardiology, Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
| | - Ryan S Cantor
- Department of Cardiothoracic Surgery, Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - Devin A Koehl
- Department of Cardiothoracic Surgery, Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jacqueline M Lamour
- Department of Pediatrics, Division of Cardiology, Children's Hospital at Montefiore, Bronx, New York
| | - James K Kirklin
- Department of Cardiothoracic Surgery, Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - Elfriede Pahl
- Department of Pediatrics, Division of Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
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Lunze FI, Singh TP, Gauvreau K, Molloy MA, Blume ED, Berger F, Colan SD. Comparison of tissue Doppler imaging and conventional echocardiography to discriminate rejection from non-rejection after pediatric heart transplantation. Pediatr Transplant 2020; 24:e13738. [PMID: 32525246 DOI: 10.1111/petr.13738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 02/14/2020] [Accepted: 04/17/2020] [Indexed: 11/30/2022]
Abstract
TDI is considered superior to conventional echocardiography for detecting changes in graft function during rejection in adults but has not demonstrated after pediatric OHT. We retrospectively analyzed echocardiograms performed within 24 hours of biopsy in 122 recipients with median age of 8.7 years. Using biopsy findings as the gold standard, we compared paired rejection and non-rejection echocardiograms using each patient as their own control. We included pairs of LV dimensions, FS, volumes, mass, mass/volume, sphericity, wall stress, SSI, SVI, and TDI velocities in this comparison. C-statistic was used to assess discrimination for individual echo variables and combinations of variables. Overall, 647 non-rejection and 24 rejection biopsy-echo pairs were identified. There was a significant decline in TDI velocities and their Z-scores during rejection but not in conventional variables (P ≤ .005). The variable that best discriminated rejection from non-rejection was LV S', with C-statistic = 0.93. Conventional echo variables performed less well with C-statistic range 0.65-0.67 for LV EF, shortening fraction, and mass. TDI is superior to conventional echocardiography measures for discriminating rejection from non-rejection. The use of newer non-invasive parameters to detect myocardial dysfunction and shifting the paradigm of rejection surveillance to detection of non-rejection together provide a promising approach to reducing the need for biopsy in pediatric heart recipients.
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Affiliation(s)
- Fatima I Lunze
- Department of Congenital Heart Disease-Pediatric Cardiology, German Heart Institute, Berlin, Germany.,Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Tajinder P Singh
- Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Departments of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Kimberlee Gauvreau
- Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Meaghan A Molloy
- Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Elizabeth D Blume
- Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Departments of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Felix Berger
- Department of Congenital Heart Disease-Pediatric Cardiology, German Heart Institute, Berlin, Germany.,Departments of Pediatrics, Charité-Medical School, Berlin, Germany
| | - Steven D Colan
- Departments of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Departments of Pediatrics, Harvard Medical School, Boston, MA, USA
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21
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Hassan S, Barrett CJ, Crossman DJ. Imaging tools for assessment of myocardial fibrosis in humans: the need for greater detail. Biophys Rev 2020; 12:969-987. [PMID: 32705483 PMCID: PMC7429810 DOI: 10.1007/s12551-020-00738-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/08/2020] [Indexed: 02/06/2023] Open
Abstract
Myocardial fibrosis is recognized as a key pathological process in the development of cardiac disease and a target for future therapeutics. Despite this recognition, the assessment of fibrosis is not a part of routine clinical practice. This is primarily due to the difficulties in obtaining an accurate assessment of fibrosis non-invasively. Moreover, there is a clear discrepancy between the understandings of myocardial fibrosis clinically where fibrosis is predominately studied with comparatively low-resolution medical imaging technologies like MRI compared with the basic science laboratories where fibrosis can be visualized invasively with high resolution using molecularly specific fluorescence microscopes at the microscopic and nanoscopic scales. In this article, we will first review current medical imaging technologies for assessing fibrosis including echo and MRI. We will then highlight the need for greater microscopic and nanoscopic analysis of human tissue and how this can be addressed through greater utilization of human tissue available through endomyocardial biopsies and cardiac surgeries. We will then describe the relatively new field of molecular imaging that promises to translate research findings to the clinical practice by non-invasively monitoring the molecular signature of fibrosis in patients.
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Affiliation(s)
- Summer Hassan
- Department of Physiology, University of Auckland, Auckland, New Zealand
- Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - Carolyn J Barrett
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - David J Crossman
- Department of Physiology, University of Auckland, Auckland, New Zealand.
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22
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Auerbach SR, Fenton MJ, Grutter G, Albert DC, Di-Filippo S, Burch M, Kuhn MA. The complication rate of intravascular ultrasound (IVUS) in a multicenter pediatric heart transplant population: A study of the international pediatric IVUS consortium. Clin Transplant 2020; 34:e13981. [PMID: 32720750 DOI: 10.1111/ctr.13981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/26/2020] [Accepted: 05/13/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Our purpose was to determine the complication rate from intravascular ultrasound (IVUS) in a large, multicenter cohort of pediatric heart transplant (PHT) patients. METHODS We retrospectively reviewed all PHT who underwent IVUS at 5 institutions (2006-2014). Rates of major and minor complications were calculated. All adverse events (AE) were graded from 1 to 5 using a previously published AE severity scale. RESULTS There were 1380 catheterizations in 505 patients and 32 AE (2.3%); 9 major (0.6%) and 23 AE (1.7%). The major AE attributed to IVUS were all coronary artery vasospasm (7). Major and minor AE rates directly related to IVUS were 0.5% and 0.7%, respectively. Minor AE possibly attributable to IVUS included excessive fluoroscopy (3) and transient ST segment changes (7). Of AE related to IVUS, only 3 were of moderate severity. The rest were ≤ minor in severity. There were no reports of coronary artery dissection or death. CONCLUSION Most AE during routine PHT coronary evaluation with IVUS were minor and not directly related to the use of IVUS. The number of coronary related AE was similar to a registry-based report of coronary angiography alone. Efforts to minimize IVUS-related complications should be focused on preventing coronary artery vasospasm.
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Affiliation(s)
- Scott R Auerbach
- Department of Pediatrics, Division of Cardiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Matthew J Fenton
- Paediatric Cardiology, King's College London, London, UK.,Great Ormond Street Hospital, London, UK
| | - Giorgia Grutter
- Pediatric Cardiology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Dimpna C Albert
- Pediatric Cardiology, Hospital Vall d'Hebron, Barcelona, Spain
| | - Sylvie Di-Filippo
- Paediatric Cardiology, Hôpital Cardiologique Louis Pradel, Lyon, France
| | - Michael Burch
- Paediatric Cardiology, King's College London, London, UK.,Great Ormond Street Hospital, London, UK
| | - Michael A Kuhn
- Division of Pediatric Cardiology, Loma Linda University Children's Hospital and Medical Center, Loma Linda, California, USA
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23
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Quantitative cardiac magnetic resonance T2 imaging offers ability to non-invasively predict acute allograft rejection in children. Cardiol Young 2020; 30:852-859. [PMID: 32456723 PMCID: PMC7654096 DOI: 10.1017/s104795112000116x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Monitoring for acute allograft rejection improves outcomes after cardiac transplantation. Endomyocardial biopsy is the gold standard test defining rejection, but carries risk and has limitations. Cardiac magnetic resonance T2 mapping may be able to predict rejection in adults, but has not been studied in children. Our aim was to evaluate T2 mapping in identifying paediatric cardiac transplant patients with acute rejection. METHODS Eleven paediatric transplant patients presenting 18 times were prospectively enrolled for non-contrast cardiac magnetic resonance at 1.5 T followed by endomyocardial biopsy. Imaging included volumetry, flow, and T2 mapping. Regions of interest were manually selected on the T2 maps using the middle-third technique in the left ventricular septal and lateral wall in a short-axis and four-chamber slice. Mean and maximum T2 values were compared with Student's t-tests analysis. RESULTS Five cases of acute rejection were identified in three patients, including two cases of grade 2R on biopsy and three cases of negative biopsy treated for clinical symptoms attributed to rejection (new arrhythmia, decreased exercise capacity). A monotonic trend between increasing T2 values and higher biopsy grades was observed: grade 0R T2 53.4 ± 3 ms, grade 1R T2 54.5 ms ± 3 ms, grade 2R T2 61.3 ± 1 ms. The five rejection cases had significantly higher mean T2 values compared to cases without rejection (58.3 ± 4 ms versus 53 ± 2 ms, p = 0.001). CONCLUSIONS Cardiac magnetic resonance with quantitative T2 mapping may offer a non-invasive method for screening paediatric cardiac transplant patients for acute allograft rejection. More data are needed to understand the relationship between T2 and rejection in children.
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24
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Das BB, Chan KC, Winchester RW, Zakrzewski M, Niu J. Correlation of gene expression profiling score, cardiac hemodynamics and echocardiographic parameters in asymptomatic, rejection-free pediatric heart transplant recipients. Pediatr Transplant 2020; 24:e13673. [PMID: 32067334 DOI: 10.1111/petr.13673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 01/21/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To correlate gene expression profiling scores obtained by AlloMap® with cardiac hemodynamics, cardiac allograft vasculopathy (CAV), and echocardiographic parameters in asymptomatic, rejection-free pediatric heart transplant (HT) recipients. METHODS Single-institution retrospective study of 210 AlloMap scores obtained concomitantly with cardiac catheterization and echocardiogram from 55 children during follow-up after cardiac transplantation. RESULTS The median age at HT was 5.1 years (range, 0.9-14.1), with 29 males and 26 females. AlloMap scores were high in <2 years vs ≥2 years of age at the time of HT (P = .001), and trending higher with time after HT (R2 = .04, P = .004). There was no significant difference in scores between ACR grades 0 and 1R or CAV. There was mild to modest correlation of AlloMap scores with the mean right atrial pressure (P = .002), and pulmonary capillary wedge pressure (P = .02), but no correlation was found with LV SF% (P = .3), LV EF% (P = .5), or RV FAC % (P = .8). CONCLUSIONS Our study provides preliminary data that the AlloMap score must be studied carefully before it can be used in children, particularly in those under 2 years of age. Monitoring of serial scores for each patient could potentially reflect changes in allograft performance that may determine indications for catheterization and biopsy which needs to be validated in future studies.
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Affiliation(s)
- Bibhuti B Das
- Pediatric Heart Institute, Joe DiMaggio Children's Hospital, Hollywood, Florida.,Baylor College of Medicine, Texas Children's Hospital Austin Specialty Care, Austin, Texas
| | - Kak-Chen Chan
- Pediatric Heart Institute, Joe DiMaggio Children's Hospital, Hollywood, Florida
| | - Robert W Winchester
- Pediatric Heart Institute, Joe DiMaggio Children's Hospital, Hollywood, Florida
| | - Megan Zakrzewski
- Pediatric Heart Institute, Joe DiMaggio Children's Hospital, Hollywood, Florida
| | - Jianli Niu
- Office of Human Research, Memorial Healthcare System, Hollywood, Florida
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25
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Cardiovascular magnetic resonance-derived myocardial strain in asymptomatic heart transplanted patients and its correlation with late gadolinium enhancement. Eur Radiol 2020; 30:4337-4346. [PMID: 32232791 DOI: 10.1007/s00330-020-06763-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 02/16/2020] [Accepted: 02/19/2020] [Indexed: 01/10/2023]
Abstract
OBJECTIVES To investigate whether cardiovascular magnetic resonance (CMR)-derived myocardial strains were abnormal in asymptomatic heart transplant (HT) patients with normal left ventricular ejection fraction (LVEF) and to detect the relationship between CMR-derived myocardial strain parameters and late gadolinium enhancement (LGE) in asymptomatic HT patients. METHODS A total of 72 HT patients and 35 healthy volunteers underwent 1.5-T MR scanning. The examination protocol included basic cine imaging and LGE. The deformation registration algorithm (DRA) and feature tracking (FT) software were used for the strain analyses. Myocardial strain measurements included left ventricular global longitudinal strain (LVGLS), LV global circumferential strain (LVGCS), LV global radial strain (LVGRS) and right ventricular longitudinal strain (RVLS). RESULTS Compared with healthy volunteers, HT patients had significantly decreased DRA- and FT- derived myocardial strain measurements (all p < 0.05). There was a significant correlation and high reproducibility between the DRA- and FT-derived strain parameters. Both CMR-derived LVGLS and LVGRS were significantly related to the presence of LGE, and multivariate logistic regression analyses showed that the LVGLS measurement obtained from both techniques was independently associated with the presence of LGE. The odds ratios (ORs) for DRA- and FT-LVGLS were 1.340 and 1.342, respectively. CONCLUSIONS Asymptomatic HT patients with preserved LVEF exhibited reduced myocardial strain parameters. The CMR-derived LVGLS was independently related to the presence of LGE in HT patients. KEY POINTS • Reduced myocardial strain parameters were found in asymptomatic heart transplanted (HT) patients with normal left ventricular ejection fraction (LVEF). • The deformation registration algorithm (DRA) and feature tracking (FT)-derived strains in asymptomatic HT patients had high reproducibility. • DRA- and FT-derived LVGLS had an independent relationship with late gadolinium enhancement (LGE) in asymptomatic HT patients.
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26
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Peng DM, Kipps AK, Palmon M, Tacy TA, Peng LF, Hollander SA, McElhinney DB. Utility of screening echocardiogram after endomyocardial biopsy for identification of cardiac perforation or tricuspid valve injury. Pediatr Transplant 2018; 22:e13275. [PMID: 30076684 DOI: 10.1111/petr.13275] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/03/2018] [Accepted: 07/12/2018] [Indexed: 11/27/2022]
Abstract
Per protocol, our institution obtains echocardiograms immediately after each EMB to rule out procedural complication. We sought to determine the incidence of echocardiogram-detected cardiac perforation and TV injury and to evaluate the utility of routine screening echocardiogram after each EMB in the current era. At a single center, 99% (1917/1942) EMB performed in 162 patients were immediately followed by an echocardiogram per protocol. There were five newly diagnosed pericardial effusions, and only one required pericardiocentesis. In the three echocardiograms demonstrating new flail TV, only one patient underwent surgical repair 2 months later. This study demonstrates the very low incidence of significant hemopericardium and TV injury after EMB in pediatric heart transplant recipients and argues against the utility of post-EMB echocardiograms to screen solely for procedural complications.
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Affiliation(s)
- David M Peng
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California
| | - Alaina K Kipps
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California
| | - Michal Palmon
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, California
| | - Theresa A Tacy
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California
| | - Lynn F Peng
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California
| | - Seth A Hollander
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California
| | - Doff B McElhinney
- The Heart Center Clinical and Translational Research Program, Division of Pediatric Cardiology, Lucile Packard Children's Hospital, Palo Alto, California.,Department of Pediatrics, Stanford University, Palo Alto, California.,Department of Cardiothoracic Surgery, Stanford University, Palo Alto, California
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27
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Mueller GC, Michel-Behnke I, Knirsch W, Haas NA, Abdul-Khaliq H, Gitter R, Dittrich S, Dähnert I, Uhlemann F, Schubert S, Tarusinov G, Happel C, Bertram H, Sieverding L, Eicken A, Kozlik-Feldmann R, Weil J. Feasibility, safety and diagnostic impact of endomyocardial biopsies for the diagnosis of myocardial disease in children and adolescents. EUROINTERVENTION 2018; 14:1089-1095. [DOI: 10.4244/eij-d-18-00128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Chen JM, Canter CE, Hsu DT, Kindel SJ, Law YM, McKeever JE, Pahl E, Schumacher KR. Current Topics and Controversies in Pediatric Heart Transplantation: Proceedings of the Pediatric Heart Transplantation Summit 2017. World J Pediatr Congenit Heart Surg 2018; 9:575-581. [PMID: 30157743 DOI: 10.1177/2150135118782895] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In October 2017, a pediatric heart transplant summit was held in Seattle-the first of its kind internationally-which focused solely upon controversies in pediatric end-stage heart failure management and pediatric heart transplantation. We selected five of the most popular and contentious topics and asked the speakers to provide a position paper. Worldwide, the vast majority of programs perform only a handful of pediatric heart transplants a year. Because of this, these "orphan" areas of investigation provide an opportunity for us as a community to aggregate our collective knowledge, which may represent the only viable way that we might sort through these complex and controversial issues in the field. We hope this represents the first of many such conferences and that this initial selection of papers encourages us to begin this collaborative process.
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Affiliation(s)
- Jonathan M Chen
- 1 Cardiothoracic Surgery, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | | | - Daphne T Hsu
- 3 Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Steven J Kindel
- 4 Herma Heart Institute, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Yuk M Law
- 5 Pediatrics, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - James E McKeever
- 6 Clinical Psychology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Elfriede Pahl
- 7 Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Kurt R Schumacher
- 8 C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, MI, USA
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Wagner SJ, Turek JW, Maldonado J, Staron M, Edens RE. Less Is More in Post Pediatric Heart Transplant Care. Ann Thorac Surg 2018; 107:165-171. [PMID: 30071234 DOI: 10.1016/j.athoracsur.2018.06.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 05/24/2018] [Accepted: 06/15/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Historically, steroids and endomyocardial biopsies have, respectively, been part of standard immunosuppression for preventing cardiac transplant rejection and monitoring for rejection. However, these treatments come with numerous adverse effects. Some transplant programs have questioned whether the risks and costs outweigh the benefits or whether they may interfere with patient outcomes. METHODS Pediatric cardiac transplantations over 15 years (n = 49) were examined in a single-center retrospective study. Two groups of patients were formed: group 1 received induction steroids and underwent routine protocol biopsy (n = 18), and group 2 neither received steroids nor underwent routine biopsy (n = 13). RESULTS The 1-year survival rate was similar between the two approaches: group 1 survival was 94% and group 2 survival was 92%. However, differences between the two groups were observed for comorbidities. Group 1 had 11 patients that exhibited rejection, and group 2 had only 1 patient (p = 0.003). Group 2 had fewer cases of posttransplant hypertension (p = 0.001) and insulin dependence (p = 0.02). CONCLUSIONS This study suggests a less-invasive posttransplant approach that avoids biopsies and steroids was safely implemented in this single center. Both groups had similar survival. However, group 2 had statistically significant less posttransplant rejection, hypertension, and diabetes. Overall, this study shows no increased risk associated with steroid and biopsy avoidance in posttransplant patients, but with some clear benefits.
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Affiliation(s)
- Samantha J Wagner
- Department of Pediatrics, Stead Family Children's Hospital, University of Iowa, Iowa City, Iowa
| | - Joseph W Turek
- Department of Surgery, Stead Family Children's Hospital, University of Iowa, Iowa City, Iowa
| | - Jennifer Maldonado
- Department of Pediatrics, Stead Family Children's Hospital, University of Iowa, Iowa City, Iowa
| | - Michelle Staron
- Department of Pediatrics, Stead Family Children's Hospital, University of Iowa, Iowa City, Iowa
| | - R Erik Edens
- Department of Pediatrics, Stead Family Children's Hospital, University of Iowa, Iowa City, Iowa.
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30
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Xin A, Lee MGY, Hu Y, Ignjatovic V, Shi WY, Shipp A, Praporski S, Kallies A, Weintraub RG, Monagle PT, Smyth GK, Konstantinov IE. Identifying low-grade cellular rejection after heart transplantation in children by using gene expression profiling. Physiol Genomics 2017; 50:190-196. [PMID: 29341866 DOI: 10.1152/physiolgenomics.00046.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Endomyocardial biopsy (EMB) remains the gold standard for detecting rejection after heart transplantation but is costly and invasive. This study aims to distinguish no rejection (0R) from low-grade rejection (1R/2R) after heart transplantation in children by using global gene expression profiling in blood. A total of 106 blood samples with corresponding EMB from 18 children who underwent heart transplantation from 2011 to 2014 were analyzed (18 baseline/pretransplantation samples, 88 EMB samples). Corresponding rejection grades for each blood sample were 0R in 39% (34/88), 1R in 51% (45/88), and 2R in 10% (9/88). mRNA from each sample was sequenced. Differential expression analysis was performed at the gene level. A k-nearest neighbor (kNN) analysis was applied to the most differentially expressed (DE) genes to identify rejection after transplantation. Mean age at transplantation was 10.0 ± 5.4 yr. Expression of B cell and T cell receptor sequences was used to measure the effect of posttransplantation immunosuppression. Follow-up samples had lower levels of immunoglobulin gene families compared with pretransplantation ( P < 3E-5) (lower numbers of activated B cells). T cell receptor alpha and beta gene families had decreased expression in 0R samples compared with pretransplantation ( P < 4E-5) but recovered to near baseline levels in 1R/2R samples. kNN using the most DE gene (MKS1) and k = 9 nearest neighbors correctly identified 83% (73/88) of 1R/2R compared with 0R by leave-one-out cross validation. Using a genomic approach we can distinguish low-grade cellular allograft rejection (1R/2R) from no rejection (0R) after heart transplantation in children despite a wide age range.
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Affiliation(s)
- Annie Xin
- Department of Cardiac Surgery, The Royal Children's Hospital , Melbourne , Australia.,Department of Paediatrics, University of Melbourne , Melbourne , Australia
| | - Melissa G Y Lee
- Department of Cardiac Surgery, The Royal Children's Hospital , Melbourne , Australia.,Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Heart Research Group, Murdoch Children's Research Institute , Melbourne , Australia
| | - Yifang Hu
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research , Melbourne , Australia
| | - Vera Ignjatovic
- Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Haematology Research Group, Murdoch Children's Research Institute
| | - William Y Shi
- Department of Cardiac Surgery, The Royal Children's Hospital , Melbourne , Australia.,Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Heart Research Group, Murdoch Children's Research Institute , Melbourne , Australia
| | - Anne Shipp
- Department of Cardiology, The Royal Children's Hospital , Melbourne , Australia
| | - Slavica Praporski
- Heart Research Group, Murdoch Children's Research Institute , Melbourne , Australia
| | - Axel Kallies
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research , Melbourne , Australia.,Department of Medical Biology, University of Melbourne , Melbourne , Australia
| | - Robert G Weintraub
- Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Heart Research Group, Murdoch Children's Research Institute , Melbourne , Australia.,Department of Cardiology, The Royal Children's Hospital , Melbourne , Australia
| | - Paul T Monagle
- Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Haematology Research Group, Murdoch Children's Research Institute
| | - Gordon K Smyth
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research , Melbourne , Australia.,School of Mathematics and Statistics, University of Melbourne , Melbourne , Australia
| | - Igor E Konstantinov
- Department of Cardiac Surgery, The Royal Children's Hospital , Melbourne , Australia.,Department of Paediatrics, University of Melbourne , Melbourne , Australia.,Heart Research Group, Murdoch Children's Research Institute , Melbourne , Australia
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31
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Gossett JG, Sammet CL, Agrawal A, Rychlik K, Wax DF. Reducing Fluoroscopic Radiation Exposure During Endomyocardial Biopsy in Pediatric Transplant Recipients. Pediatr Cardiol 2017; 38:308-313. [PMID: 27878626 DOI: 10.1007/s00246-016-1514-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/10/2016] [Indexed: 11/27/2022]
Abstract
Endomyocardial biopsy (EMB) with fluoroscopy is used for rejection surveillance in pediatric heart transplantation. Lowering frame rate may reduce radiation, but decreases temporal resolution and image quality. We undertook a quality initiative reducing frame rate from 10 frames per second (FPS) to 5 FPS. To assess whether lowering frame rate can reduce radiation exposure without compromising safety, data on EMBs from 9/2009 to 4/2013 without angiography or intervention were reviewed. Effective dose was calculated from dose area product (DAP) and fluoroscopy time. Complications were reviewed. Independent t test compared pre- and post-data and a general linear model were used to control for confounders. Paired t test of most proximate data was used for pts with EMB before and after our change. Eighty-six patients had 543 EMB. After adjusting for weight, attending, and presence of a fellow, the lower FPS group had a 60.3% reduction in DAP (p < 0.0001) and 53.8% drop in effective dose (p < 0.0001). Fluoroscopy time did not differ. Twenty-eight pts had EMBs both before and after the FPS change. Pair-wise analysis of this group demonstrated a 33% reduction in DAP (p < 0.05) and 37% drop in effective dose (p < 0.01), without difference in fluoroscopy time. No patient had an increase in TR > 1 grade by ECHO. There were no deaths or perforations. Lowering the frame rate reduces radiation exposure by >50% without compromising safety. Efforts to further minimize radiation exposure of this vulnerable population should be considered.
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Affiliation(s)
- Jeffrey G Gossett
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital, 225 E Chicago Ave Box 21, Chicago, IL, 60611, USA.
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Christina L Sammet
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital, 225 E Chicago Ave Box 21, Chicago, IL, 60611, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Anya Agrawal
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital, 225 E Chicago Ave Box 21, Chicago, IL, 60611, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Karen Rychlik
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital, 225 E Chicago Ave Box 21, Chicago, IL, 60611, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - David F Wax
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital, 225 E Chicago Ave Box 21, Chicago, IL, 60611, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Greenway SC, Dallaire F, Kantor PF, Dipchand AI, Chaturvedi RR, Warade M, Riesenkampff E, Yoo SJ, Grosse-Wortmann L. Magnetic resonance imaging of the transplanted pediatric heart as a potential predictor of rejection. World J Transplant 2016; 6:751-758. [PMID: 28058227 PMCID: PMC5175235 DOI: 10.5500/wjt.v6.i4.751] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 11/04/2016] [Accepted: 11/29/2016] [Indexed: 02/05/2023] Open
Abstract
AIM To evaluate cardiac magnetic resonance imaging (CMR) as a non-invasive tool to detect acute cellular rejection (ACR) in children after heart transplant (HT).
METHODS Thirty pediatric HT recipients underwent CMR at the time of surveillance endomyocardial biopsy (EMB) and results were compared to 14 non-transplant controls. Biventricular volumes, ejection fractions (EFs), T2-weighted signal intensities, native T1 times, extracellular volumes (ECVs) and presence of late gadolinium enhancement (LGE) were compared between patients and controls and between patients with International Society of Heart and Lung Transplantation (ISHLT) grade ≥ 2R rejection and those with grade 0/1R. Heart rate (HR) and brain natriuretic peptide (BNP) were assessed as potential biomarkers.
RESULTS Significant ACR (ISHLT grade ≥ 2R) was an infrequent event in our population (5/30, 17%). Ventricular volumes, EFs, LGE prevalence, ECVs, native T1 times, T2 signal intensity ratios, HR and BNP were not associated with the presence of ≥ 2R ACR.
CONCLUSION In this pilot study CMR did not reliably identify ACR-related changes in pediatric HT patients.
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Kirklin JK, Carlo WF, Pearce FB. Current Expectations for Cardiac Transplantation in Patients With Congenital Heart Disease. World J Pediatr Congenit Heart Surg 2016; 7:685-695. [DOI: 10.1177/2150135116660701] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 06/14/2016] [Indexed: 11/15/2022]
Abstract
Congenital heart disease accounts for 40% of pediatric heart transplants and presents unique challenges to the transplant team. Suitability for transplantation is defined in part by degree of sensitization, pulmonary vascular resistance, and hepatic reserves. The incremental transplant risk for patients with congenital heart disease occurs within the first 3 months, after which survival is equivalent to transplantation for cardiomyopathy. Single ventricle with prior palliation, and especially the failing Fontan, carry the highest risk for transplantation and are least amenable to bridging with mechanical circulatory support. More effective bridging to transplant with mechanical circulatory support will require improvements in the adverse event profile of available pumps and the introduction of miniaturized continuous flow technology. The major barriers to routine long-term survival are chronic allograft failure and allograft vasculopathy. Despite these many challenges, continuing improvements in the care of pediatric heart transplant patients have pushed the median posttransplant survival past 15 years for children and to 20 years for infants.
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Affiliation(s)
- James K. Kirklin
- Division of Cardiothoracic Surgery, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Waldemar F. Carlo
- Division of Pediatric Cardiology, Department of Pediatrics, University of Alabama School of Medicine, Birmingham, AL, USA
| | - F. Bennett Pearce
- Division of Pediatric Cardiology, Department of Pediatrics, University of Alabama School of Medicine, Birmingham, AL, USA
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Mills KI, Vincent JA, Zuckerman WA, Hoffman TM, Canter CE, Marshall AC, Blume ED, Bergersen L, Daly KP. Is Endomyocardial Biopsy a Safe and Useful Procedure in Children with Suspected Cardiomyopathy? Pediatr Cardiol 2016; 37:1200-10. [PMID: 27272694 DOI: 10.1007/s00246-016-1416-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/20/2016] [Indexed: 10/21/2022]
Abstract
Endomyocardial biopsy (EMB) is a common procedure used to aid in the diagnosis, prognosis and treatment of suspected pediatric cardiomyopathy. In suspected cardiomyopathy, no multicenter experience has previously reported on the safety and utility of EMBs. Retrospectively, adverse event (AE) and patient and procedural characteristics were obtained at seven institutions participating in the Congenital Cardiac Catheterization Outcomes Project for both a cardiomyopathy (n = 158) and a post-transplant surveillance (n = 2665) cohort. Descriptive information regarding biopsy indication, pathology and clinical management based on EMB findings were retrospectively obtained. High-severity AEs were more common in the cardiomyopathy cohort when compared to the post-transplant surveillance cohort. The cardiomyopathy cohort was younger, more hemodynamically vulnerable and required more cardiorespiratory support during the procedure. The eight high-severity AEs in the cardiomyopathy group included one myocardial perforation, two ECMO cannulations and three deaths following the EMB. Factors associated with high-severity AEs included performing another catheter-based intervention during the EMB and longer fluoroscopy time. Notably, an increased number of biopsy attempts did not increase the risk of an AE. Suspected myocarditis was the most common indication. Diagnostic EMB pathology and thus alteration to clinical management based on pathology occurred more frequently in patients with suspected myocarditis. In conclusion, there is an increased incidence of high-severity AEs in patients undergoing EMB for suspected cardiomyopathy. EMB may be more clinically useful in the management of suspected myocarditis. The increased risk of high-severity AEs when additional interventions are performed highlights the hemodynamic vulnerability in patients with suspected cardiomyopathy.
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Affiliation(s)
- Kimberly I Mills
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
| | - Julie A Vincent
- Department of Pediatrics, Morgan Stanley Children's Hospital of New York Presbyterian - Columbia University Medical Center, New York, NY, USA
| | - Warren A Zuckerman
- Department of Pediatrics, Morgan Stanley Children's Hospital of New York Presbyterian - Columbia University Medical Center, New York, NY, USA
| | - Timothy M Hoffman
- Department of Pediatrics, Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH, USA
| | - Charles E Canter
- Department of Pediatrics, St. Louis Children's Hospital and Washington University in St. Louis, St. Louis, MO, USA
| | - Audrey C Marshall
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Elizabeth D Blume
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Lisa Bergersen
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Kevin P Daly
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
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Characteristics and safety of interventions and procedures performed during catheterisation of patients with congenital heart disease: early report from the national cardiovascular data registry. Cardiol Young 2016; 26:1202-12. [PMID: 26455737 DOI: 10.1017/s1047951115002218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVES The objective of this study was to report procedural characteristics and adverse events on the data collected in the IMproving Paediatric and Adult Congenital Treatment registry. BACKGROUND The IMproving Paediatric and Adult Congenital Treatment- registry is a catheterisation registry focussed on paediatric and adult patients with congenital heart disease who are undergoing diagnostic catheterisations and catheter-based interventions. This study reports procedural characteristics and adverse events of patients who have undergone selected catheterisation procedures from January, 2011 to June, 2013. METHODS Demographic, clinical, procedural, and institutional data elements were collected at participating centres and entered via either a web-based platform or software provided by the American College of Cardiology-certified vendors, and were collected in a secure, centralised database. For the purpose of this study, procedures that were not classified as one of the 'core' IMproving Paediatric and Adult Congenital Treatment procedures originally chosen for additional data collection were identified and selected for further data analysis. RESULTS During the time frame of data collection, a total of 8021 cases were classified as other procedures and/or multiple procedures. The most commonly performed case types - isolated or in combination with other procedures - were right ventricular biopsy in 3433 (42.8%), conduit/MPA interventions in 979 (12.3%), and systemic pulmonary artery collateral occlusion in 601 (7.5%). For the whole cohort, adverse events of any severity occurred in 957 (12.0%) cases, whereas major adverse events occurred in 113 (1.4%) cases; six patients (0.1%) died in the catheterisation laboratory. CONCLUSIONS The IMproving Paediatric and Adult Congenital Treatment registry has provided important data on the frequency and spectrum of cardiac catheterisation procedures performed in the present era. For many procedures, more data and work are needed to identify more subtle differences between case categories, especially as it relates to the incidence of major adverse events, and to further develop a risk-adjustment methodology to allow equitable comparisons among institutions.
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Optimizing Noninvasive Approaches to Rejection Surveillance in Cardiac Allograft Recipients. PROGRESS IN PEDIATRIC CARDIOLOGY 2016. [DOI: 10.1016/j.ppedcard.2016.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Gillio-Meina C, Zielke HR, Fraser DD. Translational Research in Pediatrics IV: Solid Tissue Collection and Processing. Pediatrics 2016; 137:peds.2015-0490. [PMID: 26659457 DOI: 10.1542/peds.2015-0490] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/05/2015] [Indexed: 11/24/2022] Open
Abstract
Solid tissues are critical for child-health research. Specimens are commonly obtained at the time of biopsy/surgery or postmortem. Research tissues can also be obtained at the time of organ retrieval for donation or from tissue that would otherwise have been discarded. Navigating the ethics of solid tissue collection from children is challenging, and optimal handling practices are imperative to maximize tissue quality. Fresh biopsy/surgical specimens can be affected by a variety of factors, including age, gender, BMI, relative humidity, freeze/thaw steps, and tissue fixation solutions. Postmortem tissues are also vulnerable to agonal factors, body storage temperature, and postmortem intervals. Nonoptimal tissue handling practices result in nucleotide degradation, decreased protein stability, artificial posttranslational protein modifications, and altered lipid concentrations. Tissue pH and tryptophan levels are 2 methods to judge the quality of solid tissue collected for research purposes; however, the RNA integrity number, together with analyses of housekeeping genes, is the new standard. A comprehensive clinical data set accompanying all tissue samples is imperative. In this review, we examined: the ethical standards relating to solid tissue procurement from children; potential sources of solid tissues; optimal practices for solid tissue processing, handling, and storage; and reliable markers of solid tissue quality.
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Affiliation(s)
- Carolina Gillio-Meina
- Translational Research Centre, London, Ontario, Canada; Children's Health Research Institute, London, Ontario, Canada
| | | | - Douglas D Fraser
- Translational Research Centre, London, Ontario, Canada; Children's Health Research Institute, London, Ontario, Canada; Centre for Critical Illness Research, Critical Care Medicine and Pediatrics, Clinical Neurologic Sciences, and Physiology and Pharmacology, Western University, London, Ontario, Canada
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Predictors of Catastrophic Adverse Outcomes in Children With Pulmonary Hypertension Undergoing Cardiac Catheterization: A Multi-Institutional Analysis From the Pediatric Health Information Systems Database. J Am Coll Cardiol 2015; 66:1261-1269. [PMID: 26361158 DOI: 10.1016/j.jacc.2015.07.032] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 06/12/2015] [Accepted: 07/06/2015] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cardiac catheterization is the standard of care procedure for diagnosis, choice of therapy, and longitudinal follow-up of children and adults with pulmonary hypertension (PH). However, the procedure is invasive and has risks associated with both the procedure and recovery period. OBJECTIVES The purpose of this study was to identify risk factors for catastrophic adverse outcomes in children with PH undergoing cardiac catheterization. METHODS We studied children and young adults up to 21 years of age with PH undergoing 1 or more cardiac catheterization at centers participating in the Pediatric Health Information Systems database between 2007 and 2012. Using mixed-effects multivariable regression, we assessed the association between pre-specified subject- and procedure-level covariates and the risk of the composite outcome of death or initiation of mechanical circulatory support within 1 day of cardiac catheterization after adjustment for patient- and procedure-level factors. RESULTS A total of 6,339 procedures performed on 4,401 patients with a diagnosis of PH from 38 of 43 centers contributing data to the Pediatric Health Information Systems database were included. The observed risk of composite outcome was 3.5%. In multivariate modeling, the adjusted risk of the composite outcome was 3.3%. Younger age at catheterization, cardiac operation in the same admission as the catheterization, pre-procedural systemic vasodilator infusion, and hemodialysis were independently associated with an increased risk of adverse outcomes. Pre-procedural use of pulmonary vasodilators was associated with reduced risk of composite outcome. CONCLUSIONS The risk of cardiac catheterization in children and young adults with PH is high relative to previously reported risk in other pediatric populations. The risk is influenced by patient-level factors. Further research is necessary to determine whether knowledge of these factors can be translated into practices that improve outcomes for children with PH.
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Brighenti M, Donti A, Giulia Gagliardi M, Maschietto N, Marini D, Lombardi M, Vairo U, Agnoletti G, Milanesi O, Pongiglione G, Bonvicini M. Endomyocardial biopsy safety and clinical yield in pediatric myocarditis: An Italian perspective. Catheter Cardiovasc Interv 2015; 87:762-7. [PMID: 26510399 DOI: 10.1002/ccd.26319] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 10/09/2015] [Indexed: 11/05/2022]
Abstract
OBJECTIVES The objective of this investigation is to evaluate the safety, the impact of endomyocardial biopsy (EMB) results in myocarditis management and the incidence of different etiologies of myocarditis in a pediatric population. BACKGROUND Although EMB is an established diagnostic tool to evaluate suspected myocarditis, there is lack of clear diagnostic and management guidelines for myocarditis in pediatric patients, particularly in infants. METHODS We performed a retrospective database review and subsequent outcomes analysis from five Italian pediatric cardiology centers to identify patients aged 0-18 years who underwent EMB for suspected myocarditis or inflammatory cardiomyopathy (ICMP) between 2009 and 2011. RESULTS EMB was performed in 41 children, of which 16 were male. The population ranged between 16 days of age to 17 years (mean age at EMB = 5.2 ± 4.9 years). The overall incidence of EMB-related complications was 15.5% (31.2% in infants, and 6.8% in children > 1 year of age; P = 0.079) while the incidence of EMB-driven treatment changes was 29.2%. Histological examination together with PCR on heart biopsy specimens allowed an etiological diagnosis in 26/41 patients (63%). Among the 15 patients (36.5%) with diagnosis of dilated cardiomyopathy (DCM) 11 had idiopathic DCM. Finally, we found an overall incidence of death/cardiac transplantation of 24%. CONCLUSIONS In a pediatric population with suspected myocarditis/ICMP, EMB was useful in confirming the diagnosis only in 41% of cases but showed an overall diagnostic power of 63%. As complications of EBM are not negligible, particularly in infants, the risk/benefit ratio should be taken into account in each patient.
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Affiliation(s)
- Maurizio Brighenti
- Department of Experimental, Diagnostic and Specialty Medicine, Pediatric Cardiology and Adult Congenital Unit, University of Bologna, S.Orsola-Malpighi University Hospital, Bologna, Italy
| | - Andrea Donti
- Department of Experimental, Diagnostic and Specialty Medicine, Pediatric Cardiology and Adult Congenital Unit, University of Bologna, S.Orsola-Malpighi University Hospital, Bologna, Italy
| | | | - Nicola Maschietto
- Pediatric Cardiology Unit, Department of Pediatrics, University of Padua, Italy
| | - Davide Marini
- Pediatric Cardiology Division, Città Della Salute E Della Scienza - Children's Hospital Regina Margherita, Turin, Italy.,Cardio-Thoracic Department, Città Della Salute E Della Scienza - Children's Hospital Regina Margherita, Turin, Italy
| | - Maristella Lombardi
- Pediatric Cardiology, Azienda-Policlinico, Giovanni XXIII Pediatric Hospital, Bari, Italy
| | - Ugo Vairo
- Pediatric Cardiology, Azienda-Policlinico, Giovanni XXIII Pediatric Hospital, Bari, Italy
| | - Gabriella Agnoletti
- Pediatric Cardiology Division, Città Della Salute E Della Scienza - Children's Hospital Regina Margherita, Turin, Italy.,Cardio-Thoracic Department, Città Della Salute E Della Scienza - Children's Hospital Regina Margherita, Turin, Italy
| | - Ornella Milanesi
- Pediatric Cardiology Unit, Department of Pediatrics, University of Padua, Italy
| | - Giacomo Pongiglione
- Department of Cardiology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Marco Bonvicini
- Department of Experimental, Diagnostic and Specialty Medicine, Pediatric Cardiology and Adult Congenital Unit, University of Bologna, S.Orsola-Malpighi University Hospital, Bologna, Italy
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Chaudhry-Waterman N, Coombs S, Porras D, Holzer R, Bergersen L. Developing tools to measure quality in congenital catheterization and interventions: the congenital cardiac catheterization project on outcomes (C3PO). Methodist Debakey Cardiovasc J 2015; 10:63-7. [PMID: 25114756 DOI: 10.14797/mdcj-10-2-63] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The broad range of relatively rare procedures performed in pediatric cardiac catheterization laboratories has made the standardization of care and risk assessment in the field statistically quite problematic. However, with the growing number of patients who undergo cardiac catheterization, it has become imperative that the cardiology community overcomes these challenges to study patient outcomes. The Congenital Cardiac Catheterization Project on Outcomes was able to develop benchmarks, tools for measurement, and risk adjustment methods while exploring procedural efficacy. Based on the success of these efforts, the collaborative is pursuing a follow-up project, the Congenital Cardiac Catheterization Project on Outcomes-Quality Improvement, aimed at improving the outcomes for all patients undergoing catheterization for congenital heart disease by reducing radiation exposure.
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Affiliation(s)
| | | | - Diego Porras
- Boston Children's Hospital, Boston, Massachusetts
| | - Ralf Holzer
- Nationwide Children's Hospital, Columbus, Ohio
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41
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Godown J, Harris MT, Burger J, Dodd DA. Variation in the use of surveillance endomyocardial biopsy among pediatric heart transplant centers over time. Pediatr Transplant 2015; 19:612-7. [PMID: 25943967 DOI: 10.1111/petr.12518] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/13/2015] [Indexed: 11/28/2022]
Abstract
EMB is widely utilized for graft surveillance after HTx; however, there is significant variation in the frequency of surveillance EMB use during the first year post-HTx. The aim of this study was to assess changes in the utilization of surveillance EMB over time among member institutions of PHTS. A survey of PHTS centers assessing the frequency of surveillance EMB use during the first year post-HTx was conducted in 2006. The same survey was repeated in 2014 to assess changes in practice over time. The number of EMB in infants ranged from 0 to 9 and in adolescents 0 to 16. The number of EMB decreased or remained unchanged in the majority of centers. Fewer EMB are performed in infants compared to adolescents and this practice did not change over time. There was a significant decrease in surveillance EMB use in adolescents (p = 0.012). International centers perform significantly fewer EMB in adolescents when compared to centers within the United States (p = 0.006). There continues to be significant variation in the utilization of surveillance EMB, with a shift toward less reliance on EMB for adolescents in the current era. Further research is necessary to determine the optimal frequency of invasive monitoring that reduces costs without compromising outcomes.
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Affiliation(s)
- Justin Godown
- Division of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
| | - Michelle T Harris
- Division of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
| | - Judith Burger
- Division of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
| | - Debra A Dodd
- Division of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
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Abstract
Acute heart failure is a common and serious complication of congenital and acquired heart disease, and it is associated with significant morbidity, mortality, and costs. When a patient is admitted to the hospital with acute heart failure, there are several important goals for the hospital admission, including maintaining adequate perfusion, establishing the underlying aetiology for the heart failure, patient and family education, and discharge from the hospital in a stable condition. The pathway to home discharge is variable and may include inotropic therapy, mechanical circulatory support, and/or heart transplantation. This review will cover the epidemiology, presentation, and management of acute heart failure in children.
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Pearce FB, Carlo WF, Zaccagni HJ, Dabal RJ, Kirklin JK. Repair of early posttransplant endomyocardial biopsy-related tricuspid regurgitation in a child. World J Pediatr Congenit Heart Surg 2015; 6:295-7. [PMID: 25870351 DOI: 10.1177/2150135114564194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We describe surgical repair of symptomatic tricuspid valve regurgitation in the early posttransplant period in a small child. The tricuspid valve regurgitation was due to injury to the valve and chordal apparatus during surveillance endomyocardial biopsy. The described surgical technique produced durable improvement in valve function.
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Affiliation(s)
- F Bennett Pearce
- Department of Pediatrics, Division of Pediatric Cardiology, University of Alabama School of Medicine, Birmingham, AL, USA
| | - Waldemar F Carlo
- Department of Pediatrics, Division of Pediatric Cardiology, University of Alabama School of Medicine, Birmingham, AL, USA
| | - Hayden J Zaccagni
- Department of Pediatrics, Division of Pediatric Cardiology, University of Alabama School of Medicine, Birmingham, AL, USA
| | - Robert J Dabal
- Department of Surgery, Division of Cardiothoracic Surgery, University of Alabama School of Medicine, Birmingham, AL, USA
| | - James K Kirklin
- Department of Surgery, Division of Cardiothoracic Surgery, University of Alabama School of Medicine, Birmingham, AL, USA
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Lara DA, Olive MK, George JF, Brown RN, Carlo WF, Colvin EV, Steenwyck BL, Pearce FB. Systemic effects of intracoronary nitroglycerin during coronary angiography in children after heart transplantation. Tex Heart Inst J 2014; 41:21-5. [PMID: 24512395 DOI: 10.14503/thij-12-2704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Coronary spasm during coronary angiography for vasculopathy in children can be prevented by the intracoronary administration of nitroglycerin. We reviewed the anesthesia and catheterization reports and charts for pediatric transplant recipients who underwent angiography from 2005 through 2010. Correlation analysis was used to study the relation of post-injection systolic blood pressure (SBP) to nitroglycerin dose. Forty-one angiographic evaluations were performed on 25 patients (13 male and 12 female). Mean age was 9.9 ± 3.2 years (range, 3.3-16.1 yr). The mean total dose of nitroglycerin was 2.93 ± 1.60 µg/kg (range, 1-8 µg/kg). There was a significant drop between the baseline SBP (mean, 106 ± 21.6 mmHg) and the lowest mean SBP before nitroglycerin administration (78 ± 13.2, P <0.0001, paired t test). There was no significant additional change in SBP (mean after nitroglycerin administration, 80.7 ± 13.1 mmHg; P = 0.2). There was a significant drop in lowest heart rate between baseline (109 ± 16.5 beats/min) and before nitroglycerin administration (89 ± 14.3 beats/min; P <0.0001, paired t test). There was no significant additional change in heart rate (mean heart rate after nitroglycerin, 84 ± 17.7 beats/min; P = 0.09). There were 2 interventions for SBP before nitroglycerin and 2 after nitroglycerin. One child experienced a transient ST-T-segment change during angiography after nitroglycerin. In the highest dose range, the additional decrease in SBP was 7.2 mmHg (P=0.03). Routine intracoronary nitroglycerin administration in this dose range produced no significant changes in SBP or heart rate in children.
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Affiliation(s)
- Diego A Lara
- Departments of Pediatrics (Drs. Lara and Olive) and Anesthesiology (Dr. Steenwyck), and Divisions of Cardiothoracic Surgery (Dr. George and Mr. Brown) and Pediatric Cardiology (Drs. Carlo, Colvin, and Pearce), University of Alabama School of Medicine, Birmingham, Alabama 35294
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45
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Das BB. Role of endomyocardial biopsy for children presenting with acute systolic heart failure. Pediatr Cardiol 2014; 35:191-6. [PMID: 24212383 DOI: 10.1007/s00246-013-0807-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 09/17/2013] [Indexed: 02/04/2023]
Abstract
Myocarditis, an inflammatory disease of the heart, frequently results from viral infections, postviral immune-mediated responses, or both. It is a common cause of acute-onset systolic heart failure in children. Endomyocardial biopsy (EMB) remains the gold standard for the diagnosis of myocarditis. However, EMB is not performed for most myocarditis cases involving children in the United States. Clinical scenarios in which EMB results added unique prognostic data and guidance to therapy have been defined recently. This review outlines the role of EMB in the diagnosis and management of myocarditis for children presenting with acute-onset systolic heart failure.
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Affiliation(s)
- Bibhuti B Das
- Division of Pediatric Cardiology, Children's Medical Center, University of Texas Southwestern Medical Center, Dallas, TX, 75235, USA,
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46
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Mah DY, Porras D, Bergersen L, Marshall AC, Walsh EP, Triedman JK. Incidence of and risk factors for catheterization-induced complete heart block in the pediatric cardiac catheterization laboratory. Circ Arrhythm Electrophysiol 2014; 7:127-33. [PMID: 24382412 DOI: 10.1161/circep.113.000731] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The majority of the literature on catheterization-induced heart block (CIHB) was published >30 years ago. The field of cardiac catheterization has evolved, performing more interventional compared with diagnostic cases. We sought to determine the incidence and risk factors of CIHB. METHODS AND RESULTS A catheterization database that records the occurrence of adverse events on all cases was queried for heart block. Additional retrospective data on event outcome were collected on patients who developed CIHB. Multivariable logistic regression modeling was used to identify risk factors of CIHB (odds ratio, 95% confidence interval). In a 6-year period, 6183 cases were performed. The median weight was 15.0 (7.0-47.0) kg, with 29% consisting of infants <1 year. A total of 72% involved complex congenital heart disease. One hundred thirty-five cases were complicated by CIHB (2.2%; 95% confidence interval, 1.9-2.6). Age <1 year (3.0; 2.2-4.3) and case duration ≥2 hours (3.4; 2.0-6.0) were risk factors of CIHB; cardiac anatomy and intervention performed were not. A total of 96% of CIHB recovered within 1 week but 6 patients underwent pacemaker placement (3 L-loop ventricles, 2 intracardiac devices, 1 double inlet-double outlet RV). Of these, 50% recovered atrioventricular nodal conduction within 1 month; 2 patients with L-loop ventricles and 1 patient with a left ventricular-to-right atrial device did not recover. CONCLUSIONS The incidence of CIHB in the pediatric cardiac catheterization laboratory is low at 2.2%. Risk factors include young age and long case duration. The recovery of atrioventricular nodal function after CIHB is high and follows a similar time course to that of postsurgical heart block.
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Affiliation(s)
- Douglas Y Mah
- Department of Cardiology, Boston Children's Hospital, MA; and Department of Pediatrics, Harvard Medical School, Boston, MA
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Flanagan R, Cain N, Tatum G, DeBrunner MG, Drant S, Feingold B. Left ventricular myocardial performance index change for detection of acute cellular rejection in pediatric heart transplantation. Pediatr Transplant 2013; 17:782-6. [PMID: 24118848 PMCID: PMC3841228 DOI: 10.1111/petr.12153] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/16/2013] [Indexed: 01/18/2023]
Abstract
EMB, the gold standard for diagnosis of ACR, poses unique risks in children. Limited cross-sectional data have associated LV MPI with ACR. We hypothesize that a relative change in MPI from baseline without ACR to the time of ACR will better detect ACR than an absolute threshold LV MPI value. We identified 40 children with ACR ≥60 days post-transplant matching them by age and time from transplantation to 40 children without ACR. There was a significant increase in LV MPI at time of ACR vs. baseline (0.59 ± 0.17 vs. 0.41 ± 0.11; p < 0.001). There was no difference in LV MPI between baseline and follow-up (0.41 ± 0.11 vs. 0.42 ± 0.11; p = 0.65). An absolute increase in LV MPI of ≥0.47 had 82.5% sensitivity and 85% specificity for ACR, whereas an increase in LV MPI from baseline of ≥20.4% was 90% sensitive and 100% specific. Serial measurement of LV MPI appears to be a sensitive and specific marker of ACR. LV MPI shows good interobserver agreement and increases at the time of EMB-proven ACR with subsequent resolution to baseline measurements upon EMB-proven resolution of ACR. Future studies in larger, prospective cohorts should be undertaken to validate these findings.
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Affiliation(s)
- Ryan Flanagan
- Children’s Hospital of Pittsburgh of UPMC Division of Pediatric Cardiology, Pittsburgh, PA
| | - Nicole Cain
- Medical University of South Carolina Children’s Hospital Division of Pediatric Cardiology, Charleston SC
| | - Gregory Tatum
- Duke Children’s Hospital and Health Center Division of Pediatric Cardiology, Durham, NC
| | - Mark G. DeBrunner
- Children’s Hospital of Pittsburgh of UPMC Division of Pediatric Cardiology, Pittsburgh, PA
| | - Stacey Drant
- Children’s Hospital of Pittsburgh of UPMC Division of Pediatric Cardiology, Pittsburgh, PA
| | - Brian Feingold
- Children’s Hospital of Pittsburgh of UPMC Division of Pediatric Cardiology, Pittsburgh, PA
,Clinical and Translational Research, University of Pittsburgh, Pittsburgh, PA
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Tissue Doppler imaging for rejection surveillance in pediatric heart transplant recipients. J Heart Lung Transplant 2013; 32:1027-33. [PMID: 23937884 DOI: 10.1016/j.healun.2013.06.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/13/2013] [Accepted: 06/20/2013] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Most transplant centers perform serial cardiac biopsies for rejection surveillance in pediatric heart transplant (HT) recipients. We sought to assess tissue Doppler imaging (TDI) findings during biopsy specimen-proven rejection in pediatric HT recipients and to develop TDI criteria for absence of rejection with high predictive accuracy. METHODS We included the 122 HT recipients in follow-up at our center (median age at HT, 8.7 years). We identified all echocardiograms with adequate TDI data performed within 24 hours of a cardiac biopsy during 2005 to 2011. Rejection was defined as Grade ≥ 2R cellular rejection or antibody-mediated rejection. Paired comparisons of TDI velocities were made using patients' baseline velocities as the control. RESULTS Overall, 647 specimen-pairs were identified where there was no rejection at baseline. In 24 of these, the second biopsy specimen demonstrated rejection. Using receiver operating characteristic curve analysis of percentage change from baseline, we identified < 15% decline in left ventricular (LV) S' velocity and < 5% decline in LV A' velocity to individually predict non-rejection with > 99% accuracy. When joint criteria were used, the predictive accuracy was 100%, and no rejection event was misclassified. More than 75% of TDI pairs met these criteria for non-rejection. CONCLUSIONS Biopsy specimen-proven rejection is associated with a significant decline in biventricular TDI velocities from baseline in pediatric HT recipients. By using well-defined TDI criteria to predict non-rejection, a substantial proportion of planned biopsies may be deferred or avoided at minimal risk to pediatric HT recipients.
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Chen CK, Dipchand AI. The current state and key issues of pediatric heart transplantation. INDIAN JOURNAL OF TRANSPLANTATION 2013. [DOI: 10.1016/j.ijt.2013.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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D'Alessandro LC, Mital S. Pediatric transplantation: opportunities for pharmacogenomics and genomics. Per Med 2013; 10:397-404. [PMID: 29783417 DOI: 10.2217/pme.13.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Heterogeneity is the rule among pediatric heart transplant recipients. Patients vary in age, size, organ maturity, immune system maturity and underlying disease etiology, which can all influence post-transplant outcomes. Overall, the survival of pediatric transplant recipients continues to improve and the goal remains long-term survival of the primary graft and mitigation of long-term complications and adverse events. The evolving fields of pharmacogenomics and genomics have the potential to revolutionize and personalize the care of pediatric transplant recipients, and although clinical validation in a pediatric cohort is lacking, many of these technologies are becoming more readily available. We discuss genotype-guided dosing of immunosuppressant medications and other commonly used medications after transplantation, the influence of donor and recipient genotype on risk of post-transplant complications, genotype-guided selection of therapies to treat complications, and the use of next-generation sequencing for noninvasive detection of graft rejection.
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Affiliation(s)
- Lisa Ca D'Alessandro
- Division of Cardiology, Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada.,Department of Pediatrics, University of Toronto, Toronto, ON, Canada
| | - Seema Mital
- Department of Pediatrics, University of Toronto, Toronto, ON, Canada.,Division of Cardiology, Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada.
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