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Pastore MC, Campora A, Mandoli GE, Lisi M, Benfari G, Ilardi F, Malagoli A, Sperlongano S, Henein MY, Cameli M, D'Andrea A. Stress echocardiography in heart failure patients: additive value and caveats. Heart Fail Rev 2024; 29:1117-1133. [PMID: 39060836 PMCID: PMC11306652 DOI: 10.1007/s10741-024-10423-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/14/2024] [Indexed: 07/28/2024]
Abstract
Heart failure (HF) is a clinical syndrome characterized by well-defined signs and symptoms due to structural and/or myocardial functional impairment, resulting in raised intracardiac pressures and/or inadequate cardiac stroke volume at rest or during exercise. This could derive from direct ischemic myocardial injury or other chronic pathological conditions, including valvular heart disease (VHD) and primary myocardial disease. Early identification of HF etiology is essential for accurate diagnosis and initiation of early and appropriate treatment. Thus, the presence of accurate means for early diagnosis of HF symptoms or subclinical phases is fundamental, among which echocardiography being the first line diagnostic investigation. Echocardiography could be performed at rest, to identify overt structural and functional abnormalities or during physical or pharmacological stress, in order to elicit subclinical myocardial function impairment e.g. wall motion abnormalities and raised ventricular filling pressures. Beyond diagnosis of ischemic heart disease, stress echocardiography (SE) has recently shown its unique value for the evaluation of diastolic heart failure, VHD, non-ischemic cardiomyopathies and pulmonary hypertension, with recommendations from international societies in several clinical settings. All these features make SE an important additional tool, not only for diagnostic assessment, but also for prognostic stratification and therapeutic management of patients with HF. In this review, the unique value of SE in the evaluation of HF patients will be described, with the objective to provide an overview of the validated methods for each setting, particularly for HF management.
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Affiliation(s)
- Maria Concetta Pastore
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Viale Bracci1 , Siena, Italy.
| | - Alessandro Campora
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Viale Bracci1 , Siena, Italy
| | - Giulia Elena Mandoli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Viale Bracci1 , Siena, Italy
| | - Matteo Lisi
- Department of Cardiovascular Disease - AUSL Romagna, Division of Cardiology, Ospedale S. Maria Delle Croci, Viale Randi 5, 48121, Ravenna, Italy
| | - Giovanni Benfari
- Section of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Federica Ilardi
- Department of Advanced Biomedical Sciences, Division of Cardiology, Federico II University Hospital, Via S. Pansini 5, 80131, Naples, Italy
| | - Alessandro Malagoli
- Division of Cardiology, Nephro-Cardiovascular Department, Baggiovara Hospital, Modena, Italy
| | - Simona Sperlongano
- Division of Cardiology, Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Michael Y Henein
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Matteo Cameli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Viale Bracci1 , Siena, Italy
| | - Antonello D'Andrea
- Department of Cardiology, Umberto I Hospital, 84014, Nocera Inferiore, SA, Italy
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2
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Yamazaki S, Akazawa Y, Obinata H, Motoki N, Takei K, Yasukochi S, Takigiku K. Ventricular myocardial response to exercise in patients with Fontan circulation. J Echocardiogr 2021; 19:212-221. [PMID: 33840066 DOI: 10.1007/s12574-021-00525-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 03/13/2021] [Accepted: 03/31/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Exercise stress echocardiography has been used to assess myocardial reserve in various heart diseases. This study examined the ventricular myocardial response to exercise in Fontan patients using exercise stress echocardiography. METHODS Twenty-five Fontan patients and 19 control subjects underwent semi-supine bicycle exercise stress echocardiography in this prospective, single-center, cross-sectional study. Pulsed-wave Doppler tissue imaging peak systolic (s') and diastolic (e') velocities, longitudinal strain and systolic strain rate, and early diastolic strain rate data at rest and at peak exercise were obtained for the systemic ventricle. The myocardial reserve of functional parameters was calculated as the difference between peak exercise and rest. RESULTS Inter- and intra-observer reliability were both high for exercise stress echocardiography measurements. Compared with controls, Fontan patients had significantly lower s', e', longitudinal systolic strain and strain rate, and early diastolic longitudinal strain rate at rest and at peak exercise as well as reduced myocardial reserve. CONCLUSIONS Fontan patients have markedly reduced myocardial reserve during exercise. The use of exercise stress echocardiography assessment may improve the clinical management of Fontan patients.
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Affiliation(s)
- Shoko Yamazaki
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Yohei Akazawa
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan. .,Division of Cardiology, Nagano Children's Hospital, 3100, Azumino, Nagano, Japan.
| | - Haruka Obinata
- Division of Cardiology, Nagano Children's Hospital, 3100, Azumino, Nagano, Japan
| | - Noriko Motoki
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Kohta Takei
- Division of Cardiology, Nagano Children's Hospital, 3100, Azumino, Nagano, Japan
| | - Satoshi Yasukochi
- Division of Cardiology, Nagano Children's Hospital, 3100, Azumino, Nagano, Japan
| | - Kiyohiro Takigiku
- Division of Cardiology, Nagano Children's Hospital, 3100, Azumino, Nagano, Japan
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Power LC, Gusso S, Hornung TS, Jefferies C, Derraik JGB, Hofman PL, O'Grady GL. Exercise Cardiac Magnetic Resonance Imaging in Boys With Duchenne Muscular Dystrophy Without Cardiac Disease. Pediatr Neurol 2021; 117:35-43. [PMID: 33662889 DOI: 10.1016/j.pediatrneurol.2020.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Duchenne muscular dystrophy is caused by mutations in the DMD gene, resulting in cardiomyopathy in all affected children by 18 years. Although cardiomyopathy is now the leading cause of mortality in these children, there is ongoing debate regarding timely diagnosis, secondary prevention, and treatment of this condition. The purpose of this study was to use exercise cardiac magnetic resonance imaging in asymptomatic young boys with Duchenne muscular dystrophy to describe their heart function and compare this with healthy controls. METHODS We studied 11 boys with Duchenne muscular dystrophy aged 8.6 to 13.9 years and 11 healthy age- and sex-matched controls. RESULTS Compared with the controls, boys with Duchenne muscular dystrophy had lower ejection fraction at rest (57% versus 63%; P = 0.004). During submaximal exercise, they reached similar peak tachycardia but increased their heart rate and cardiac output only half as much as controls (P = 0.003 and P = 0.014, respectively). End-systolic volume remained higher in boys with Duchenne muscular dystrophy both at rest and during exercise. When transthoracic echocardiography was compared with cardiac magnetic resonance imaging, 45% of the echocardiograms had suboptimal or poor views in the Duchenne muscular dystrophy group. CONCLUSIONS Boys with Duchenne muscular dystrophy had abnormalities in left ventricular systolic function that were exaggerated by exercise stress. Exercise cardiac magnetic resonance imaging is feasible in a select population of children with Duchenne muscular dystrophy, and it has the potential to unmask early signs of cardiomyopathy.
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Affiliation(s)
- Lisa C Power
- Paediatric Neurology Department, Starship Children's Hospital, Auckland, New Zealand; Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand; Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Silmara Gusso
- Department of Exercise Sciences, University of Auckland, Auckland, New Zealand
| | - Tim S Hornung
- Paediatric Cardiology Department, Starship Children's Hospital, Auckland, New Zealand
| | - Craig Jefferies
- Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand
| | - José G B Derraik
- Liggins Institute, University of Auckland, Auckland, New Zealand; Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Paul L Hofman
- Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand; Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Gina L O'Grady
- Paediatric Neurology Department, Starship Children's Hospital, Auckland, New Zealand.
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Morhy SS, Barberato SH, Lianza AC, Soares AM, Leal GN, Rivera IR, Barberato MFA, Guerra V, Ribeiro ZVDS, Pignatelli R, Rochitte CE, Vieira MLC. Position Statement on Indications for Echocardiography in Fetal and Pediatric Cardiology and Congenital Heart Disease of the Adult - 2020. Arq Bras Cardiol 2020; 115:987-1005. [PMID: 33295472 PMCID: PMC8452202 DOI: 10.36660/abc.20201122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
| | - Silvio Henrique Barberato
- Cardioeco - Centro de Diagnóstico Cardiovascular, Curitiba, PR - Brasil
- Quanta Diagnóstico e Terapia, Curitiba, PR - Brasil
| | - Alessandro Cavalcanti Lianza
- Hospital Israelita Albert Einstein, São Paulo, SP - Brasil
- Instituto da Criança e do Adolescente do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP - Brasil
- Hospital do Coração, São Paulo, SP - Brasil
| | - Andressa Mussi Soares
- Hospital Evangélico de Cachoeiro de Itapemirim e Clínica CORImagem, Cachoeiro de Itapemirim, ES - Brasil
| | - Gabriela Nunes Leal
- Hospital Israelita Albert Einstein, São Paulo, SP - Brasil
- Instituto da Criança e do Adolescente do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP - Brasil
- Hospital do Coração, São Paulo, SP - Brasil
- Hospital e Maternidade São Luiz Itaim, São Paulo, SP - Brasil
| | | | | | - Vitor Guerra
- The Hospital for Sick Children, Toronto - Canadá
| | | | - Ricardo Pignatelli
- Texas Children's Hospital, Baylor College of Medicine, Houston, Texas - EUA
| | - Carlos Eduardo Rochitte
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (InCor, FMUSP), São Paulo, SP - Brasil
| | - Marcelo Luiz Campos Vieira
- Hospital Israelita Albert Einstein, São Paulo, SP - Brasil
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (InCor, FMUSP), São Paulo, SP - Brasil
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Increased Arterial Stiffness Adversely Affects Left Ventricular Mechanics in Patients With Pediatric Takayasu Arteritis From a Toronto Cohort. J Clin Rheumatol 2019; 25:171-175. [PMID: 29782425 DOI: 10.1097/rhu.0000000000000824] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND/OBJECTIVE Takayasu arteritis (TA) is characterized by extensive aortic, large and midsize arterial wall inflammation. The aim of this study was to assess the morphological and elastic properties of the aorta and large arteries and the impact on left ventricular (LV) mechanics in children with TA. METHODS Seven pediatric TA patients (6 female patients, 13.8 ± 3.2 years) were assessed with magnetic resonance imaging, vascular ultrasound, applanation tonometry, and echocardiography from February 2015 until July 2017 and compared with 7 age- and sex-matched controls. Takayasu arteritis disease activity was assessed clinically by the Pediatric Vasculitis Activity Score (PVAS). RESULTS Pediatric TA patients showed increased carotid-to-radial artery pulse wave velocity (8.1 ± 1.8 vs. 6.4 ± 0.6 m/s, p = 0.03) and increased carotid-to-femoral artery pulse wave velocity (8.3 ± 1.9 vs. 5.1 ± 0.8 m/s, p < 0.01) when compared with controls. Patients demonstrated increased LV mass index (74.3 ± 18.8 vs. 56.3 ± 10.9 g/m, p = 0.04), altered myocardial deformation with increased basal rotation (-9.8 ± 4.5 vs. -4.0 ± 2.0 degrees, p = 0.01) and torsion (19.9 ± 8.1 vs. 9.1 ± 3.1 degrees, p = 0.01), and impaired LV diastolic function with decreased mitral valve E/A ratio (1.45 ± 0.17 vs. 2.40 ± 0.84, p = 0.01), increased mitral valve E/E' ratio (6.8 ± 1.4 vs. 4.9 ± 0.7, p < 0.01), and increased pulmonary vein A-wave velocity (26.7 ± 5.7 vs. 16.8 ± 3.3 cm/s, p = 0.03). Carotid-to-radial artery pulse wave velocity was associated with systolic (R = 0.94, p < 0.01), diastolic (R = 0.85, p = 0.02), and mean blood pressure (R = 0.91, p < 0.01), as well as disease activity by PVAS (R = 0.75, p = 0.05). The PVAS was associated with carotid-to-radial artery pulse wave velocity (R = 0.75, p = 0.05), as well as systolic (R = 0.84, p = 0.02), diastolic (R = 0.82, p = 0.03), and mean blood pressure (R = 0.84, p = 0.02). CONCLUSIONS Increased arterial stiffness is present in pediatric TA patients and associated with increased blood pressure and TA disease activity. Pediatric TA patients demonstrate altered LV mechanics, LV hypertrophy, and impaired diastolic function.
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Bovard JM, DE Souza AM, Harris KC, Human DG, Hosking MCK, Potts JE, Armstrong K, Sandor GGS, Cote AT. Physiological Responses to Exercise in Pediatric Heart Transplant Recipients. Med Sci Sports Exerc 2019; 51:850-857. [PMID: 30629048 DOI: 10.1249/mss.0000000000001889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Pediatric heart transplant (HTx) recipients have reduced exercise capacity typically two-thirds of predicted values, the mechanisms of which are not fully understood. We sought to assess the cardiorespiratory responses to progressive exercise in HTx relative to controls matched for age, sex, body size, and work rate. METHODS Fourteen HTx recipients and matched controls underwent exercise stress echocardiography on a semisupine cycle ergometer. Hemodynamics, left ventricular (LV) dimensions, and volumes were obtained and indexed to body surface area. Oxygen consumption (V˙O2) was measured, and arteriovenous oxygen difference was estimated using the Fick Principle. RESULTS At rest, LV mass index (P = 0.03) and volumes (P < 0.001) were significantly smaller in HTx, whereas wall thickness (P < 0.01) and LV mass-to-volume ratio (P = 0.01) were greater. Differences in LV dimensions and stroke volume persisted throughout exercise, but the pattern of response was similar between groups as HR increased. As exercise progressed, heart rate and cardiac index increased to a lesser extent in HTx. Despite this, V˙O2 was similar (P = 0.82) at equivalent work rates as HTx had a greater change in arteriovenous oxygen difference (P < 0.01). CONCLUSIONS When matched for work rate, HTx had similar metabolic responses to controls despite having smaller LV chambers and an attenuated increase in hemodynamic responses. These findings suggest that HTx may increase peripheral O2 extraction as a compensatory mechanism in response to reduced cardiovascular function.
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Affiliation(s)
- Joshua M Bovard
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, CANADA
| | - Astrid M DE Souza
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA
| | - Kevin C Harris
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA.,Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA
| | - Derek G Human
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA.,Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA
| | - Martin C K Hosking
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA.,Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA
| | - James E Potts
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA.,Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA
| | - Kathryn Armstrong
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA
| | - George G S Sandor
- Children's Heart Centre, BC Children's Hospital, Vancouver, British Columbia, CANADA.,Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA
| | - Anita T Cote
- Department of Pediatrics (Cardiology), University of British Columbia, Vancouver, British Columbia, CANADA.,School of Human Kinetics, Trinity Western University, Langley, British Columbia, CANADA
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7
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Grotenhuis HB, Cifra B, Mertens LL, Riessenkampff E, Manlhiot C, Seed M, Yoo SJ, Grosse-Wortmann L. Left ventricular remodelling in long-term survivors after the arterial switch operation for transposition of the great arteries. Eur Heart J Cardiovasc Imaging 2019; 20:101-107. [PMID: 29800129 DOI: 10.1093/ehjci/jey072] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 05/04/2018] [Indexed: 12/23/2022] Open
Abstract
Aims The objective of this study was to quantify imaging markers of myocardial fibrosis and assess myocardial function in long-term transposition of the great arteries survivors after the arterial switch operation (ASO). Methods and results Paediatric ASO patients were prospectively studied by cardiac magnetic resonance imaging, including first-pass myocardial perfusion, late gadolinium enhancement, and T1 relaxometry, as well as echocardiography for left ventricular (LV) systolic and diastolic function including strain analysis, with comparison to healthy controls. Thirty ASO patients (mean age 15.4 ± 2.9 years vs. 14.1 ± 2.6 years in 28 controls, P = 0.04) were included. Patients had normal LV ejection fraction (EF) (57 ± 5% vs. 59 ± 5%, P = 0.07), but end-diastolic and end-systolic volumes were increased (104 ± 20 mL/m2 vs. 89 ± 10 mL/m2, P < 0.01 and 46 ± 13 mL/m2 vs. 36 ± 7 mL/m2, P < 0.01, respectively). Longitudinal strain at two-, three-, and four-chamber levels of the LV were lower in ASO patients (-19.0 ± 2.6% vs. -20.9 ± 2.3%, P = 0.006, -17.7 ± 2.0% vs. -19.1 ± 2.4%, P = 0.02, and -18.9 ± 1.9% vs. -20.1 ± 1.7%, P = 0.01, respectively), while circumferential strain was higher at all short-axis levels (-24.6 ± 2.3% vs. -19.3 ± 1.6%, P < 0.001 at the mid-ventricular level). LV native T1 times were higher in ASO patients (1042 ± 27 ms vs. 1011 ± 27 ms, P < 0.01) and correlated with LV mass/volume ratio (R = 0.60, P < 0.001). Myocardial scarring or myocardial perfusion defects were not observed in our cohort. Conclusion Children and adolescents after ASO have normal LV systolic function, in line with their overall good clinical health. At a myocardial level however, imaging markers of diffuse myocardial fibrosis are elevated, along with an altered LV contraction pattern. Whether these abnormalities will progress into future clinically significant dysfunction and whether they are harbingers of adverse outcomes remains to be studied.
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Affiliation(s)
- Heynric B Grotenhuis
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Barbara Cifra
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Luc L Mertens
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Eugenie Riessenkampff
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Cedric Manlhiot
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Mike Seed
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada.,Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Shi-Joon Yoo
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada.,Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
| | - Lars Grosse-Wortmann
- The Labatt Family Heart Center, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada.,Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
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8
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Reduced Biventricular Volumes and Myocardial Dysfunction Long-term After Pediatric Heart Transplantation Assessed by CMR. Transplantation 2019; 103:2682-2691. [PMID: 30964835 DOI: 10.1097/tp.0000000000002738] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Long-term cardiac remodeling after heart transplantation (HT) in children has been insufficiently characterized. The aim of our study was to evaluate ventricular size in HT patients using cardiovascular magnetic resonance (CMR) imaging, to find underlying factors related to potentially abnormal cardiac dimensions and to study its impact on functional class and ventricular function. METHODS Seventy-five pediatric HT recipients (age 14.0 ± 4.2 y) were assessed by using CMR 11.2 ± 5.4 years after HT. Right ventricular (RV) and left ventricular (LV) volumes and mass were derived from short-axis cine images and myocardial strain/strain rate was assessed using myocardial feature tracking technique. Results were compared with a healthy reference population (n = 79, age 13.7 ± 3.7 y). RESULTS LV end-diastolic ventricular volumes were smaller (64 ± 12 versus 84 ± 12 mL/m; P < 0.001) while mass-to-volume ratio (0.86 ± 0.18 versus 0.65 ± 0.11; P < 0.001) and heart rate (92 ± 14 versus 78 ± 13 beats/min; P < 0.001) were higher in HT patients. LV-ejection fraction (EF) was preserved (66% ± 8% versus 64% ± 6%; P = 0.18) but RV-EF (58 ± 7 versus 62% ± 4%, P = 0.004), LV systolic longitudinal strain (-12 ± 6 versus -15% ± 5%; P = 0.05), diastolic strain rate (1.2 ± 0.6 versus 1.5 ± 0.6 1/s; P = 0.03), and intra and interventricular synchrony were lower in the HT group. Smaller LV dimensions were primarily related to longer follow-up time since HT (β = -0.38; P < 0.001) and were associated with worse functional class and impaired ventricular systolic and diastolic performance. CONCLUSIONS Cardiac remodeling after pediatric HT is characterized by reduced biventricular size and increased mass-to-volume ratio. These adverse changes evolve gradually and are associated with impaired functional class and ventricular dysfunction suggesting chronic maladaptive processes affecting allograft health.
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Cifra B, Morgan CT, Dragulescu A, Guerra VC, Slorach C, Friedberg MK, Manlhiot C, McCrindle BW, Dipchand AI, Mertens L. Right ventricular function during exercise in children after heart transplantation. Eur Heart J Cardiovasc Imaging 2019; 19:647-653. [PMID: 28655190 DOI: 10.1093/ehjci/jex137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 05/06/2017] [Indexed: 11/14/2022] Open
Abstract
Aims Right ventricular (RV) dysfunction is a common problem after heart transplant (HTx). In this study, we used semi-supine bicycle ergometry (SSBE) stress echocardiography to evaluate RV systolic and diastolic reserve in paediatric HTx recipients. Methods and results Thirty-nine pediatric HTx recipients and 23 controls underwent stepwise SSBE stress echocardiography. Colour tissue doppler imaging (TDI) peak systolic (s') and peak diastolic (e') velocities, myocardial acceleration during isovolumic contraction (IVA), and RV free wall longitudinal strain were measured at incremental heart rates (HR). The relationship with increasing HR was evaluated for each parameter by plotting values at each stage of exercise versus HR using linear and non-linear regression models. At rest, HTx recipients had higher HR with lower TDI velocities (s': 5.4 ± 1.7 vs. 10.4 ± 1.8 cm/s, P < 0.001; e': 6.4 ± 2.2 vs.12 ± 2.4 cm/s, P < 0.001) and RV IVA values (IVA: 1.2 ± 0.4 vs. 1.6 ± 0.8 m/s2, P = 0.04), while RV free wall longitudinal strain was similar between groups. At peak exercise, HR was higher in controls and all measurements of RV function were significantly lower in HTx recipients, except for RV free wall longitudinal strain. When assessing the increase in each parameter vs. HR, the slopes were not significantly different between patients and controls except for IVA, which was lower in HTx recipients. Conclusion In pediatric HTx recipients RV systolic and diastolic functional response to exercise is preserved with a normal increase in TDI velocities and strain values with increasing HR. The blunted IVA response possibly indicates a mildly decreased RV contractile response but it requires further investigation.
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Affiliation(s)
- B Cifra
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - C T Morgan
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - A Dragulescu
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - V C Guerra
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - C Slorach
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - M K Friedberg
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - C Manlhiot
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - B W McCrindle
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - A I Dipchand
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - L Mertens
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
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10
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Cote AT, Hosking M, Voss C, Human DG, Sandor GGS, Harris KC. Coronary artery intimal thickening and ventricular dynamics in pediatric heart transplant recipients. CONGENIT HEART DIS 2018; 13:663-670. [DOI: 10.1111/chd.12629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 05/18/2018] [Accepted: 05/21/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Anita T. Cote
- Department of Pediatrics; University of British Columbia & British Columbia Children’s Hospital Research Institute; Vancouver Canada
- School of Human Kinetics; Trinity Western University; Langley Canada
| | - Martin Hosking
- British Columbia Children’s Hospital, Children’s Heart Centre; Vancouver Canada
| | - Christine Voss
- Department of Pediatrics; University of British Columbia & British Columbia Children’s Hospital Research Institute; Vancouver Canada
- British Columbia Children’s Hospital, Children’s Heart Centre; Vancouver Canada
| | - Derek G Human
- British Columbia Children’s Hospital, Children’s Heart Centre; Vancouver Canada
| | - George G. S. Sandor
- Department of Pediatrics; University of British Columbia & British Columbia Children’s Hospital Research Institute; Vancouver Canada
- British Columbia Children’s Hospital, Children’s Heart Centre; Vancouver Canada
| | - Kevin C. Harris
- Department of Pediatrics; University of British Columbia & British Columbia Children’s Hospital Research Institute; Vancouver Canada
- British Columbia Children’s Hospital, Children’s Heart Centre; Vancouver Canada
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11
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Power LC, O'Grady GL, Hornung TS, Jefferies C, Gusso S, Hofman PL. Imaging the heart to detect cardiomyopathy in Duchenne muscular dystrophy: A review. Neuromuscul Disord 2018; 28:717-730. [PMID: 30119965 DOI: 10.1016/j.nmd.2018.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 05/24/2018] [Accepted: 05/29/2018] [Indexed: 01/16/2023]
Abstract
Duchenne Muscular Dystrophy is the most common paediatric neuromuscular disorder. Mutations in the DMD gene on the X-chromosome result in progressive skeletal muscle weakness as the main clinical manifestation. However, cardiac muscle is also affected, with cardiomyopathy becoming an increasingly recognised cause of morbidity, and now the leading cause of mortality in this group. The diagnosis of cardiomyopathy has often been made late due to technical limitations in transthoracic echocardiograms and delayed symptomatology in less mobile patients. Increasingly, evidence supports earlier pharmacological intervention in cardiomyopathy to improve outcomes. However, the optimal timing of initiation remains uncertain, and the benefits of prophylactic therapy are unproven. Current treatment guidelines suggest initiation of therapy once cardiac dysfunction is detected. This review focuses on new and evolving techniques for earlier detection of Duchenne muscular dystrophy-associated cardiomyopathy. Transthoracic echocardiography or cardiac magnetic resonance imaging performed under physiological stress (dobutamine or exercise), can unmask early cardiac dysfunction. Cardiac magnetic resonance imaging can define cardiac function with greater accuracy and reliability than an echocardiogram, and is not limited by body habitus. Improved imaging techniques, used in a timely fashion, offer the potential for early detection of cardiomyopathy and improved long-term outcomes.
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Affiliation(s)
- Lisa C Power
- Paediatric Neurology Department, Starship Children's Hospital, Auckland, New Zealand; Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand; Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Gina L O'Grady
- Paediatric Neurology Department, Starship Children's Hospital, Auckland, New Zealand.
| | - Tim S Hornung
- Paediatric Cardiology Department, Starship Children's Hospital, Auckland, New Zealand
| | - Craig Jefferies
- Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand
| | - Silmara Gusso
- Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Paul L Hofman
- Paediatric Endocrinology Department, Starship Children's Hospital, Auckland, New Zealand; Liggins Institute, University of Auckland, Auckland, New Zealand
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12
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Cifra B, Chen CK, Fan CPS, Slorach C, Manlhiot C, McCrindle BW, Dragulescu A, Redington AN, Friedberg MK, Nathan PC, Mertens L. Dynamic Myocardial Response to Exercise in Childhood Cancer Survivors Treated with Anthracyclines. J Am Soc Echocardiogr 2018; 31:933-942. [PMID: 29615292 DOI: 10.1016/j.echo.2018.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND Anthracycline cardiotoxicity can cause significant long-term morbidity in childhood cancer survivors (CCS), but many CCS do not manifest clinical symptoms until adulthood. The aims of this study were to characterize the dynamic myocardial response to exercise of CCS at long-term follow-up by combining semisupine bicycle exercise stress echocardiography with myocardial imaging techniques and to establish whether semisupine bicycle exercise stress echocardiography could identify CCS with abnormal exercise response. METHODS This was a single-center prospective cross-sectional study. One hundred CCS and 51 control subjects underwent semisupine bicycle exercise stress echocardiography. Color Doppler tissue imaging peak systolic (s') and diastolic (e') velocities, myocardial acceleration during isovolumic contraction, and longitudinal strain were measured at rest and at incremental heart rates in the left ventricular (LV) lateral wall, basal septum, and right ventricle. The relationship with increasing heart rate was evaluated for each parameter by plotting the values against heart rate at each stage of exercise. Kernel density estimate was used to establish the normality of the individual CCS exercise responses. RESULTS At rest, no significant differences were found for LV lateral wall, right ventricular (RV), and basal septal systolic and diastolic velocities between CCS and control subjects. Only septal e' was lower in CCS. LV longitudinal strain was similar between groups, while RV longitudinal strain was lower in CCS. At peak exercise, LV lateral wall, RV, and septal s' were not different between groups, while e' were significantly lower in CCS. LV lateral wall and septal isovolumic acceleration were also reduced in CCS. LV longitudinal strain was different between groups, while RV longitudinal strain was similar. The dynamic response of Doppler tissue imaging velocities, isovolumic acceleration, and strain was similar between CCS and control subjects. Kernel density estimate analysis confirmed that most CCS responses were within the normal range. CONCLUSIONS At 10-year follow-up, anthracycline-treated CCS with normal baseline ejection fractions have LV and RV systolic and diastolic myocardial exercise response comparable with that of control subjects. Minor differences were observed between CCS and control subjects at rest and at peak exercise, but the dynamic response is within the normal range.
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Affiliation(s)
- Barbara Cifra
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Ching Kit Chen
- Cardiology Service, Department of Paediatric Subspecialties, KK Women's and Children's Hospital, Singapore
| | - Chun-Po S Fan
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Cameron Slorach
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Cedric Manlhiot
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Brian W McCrindle
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Andreea Dragulescu
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Andrew N Redington
- Pediatric Cardiology, Department of Pediatrics, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - Mark K Friedberg
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Paul C Nathan
- Division of Hematology/Oncology, The Hospital for Sick Children, University of Toronto Faculty of Medicine, Toronto, Ontario, Canada
| | - Luc Mertens
- Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.
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13
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Peterson S, Su JA, Szmuszkovicz JR, Johnson R, Sargent B. Exercise capacity following pediatric heart transplantation: A systematic review. Pediatr Transplant 2017; 21. [PMID: 28419703 DOI: 10.1111/petr.12922] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/24/2017] [Indexed: 12/23/2022]
Abstract
Pediatric HTs account for 13% of all HTs with >60% of recipients surviving at least 10 years post-HT. The purpose of this systematic review is to synthesize the literature on exercise capacity of pediatric HT recipients to improve understanding of the mechanisms that may explain the decreased exercise capacity. Six databases were searched for studies that compared the exercise capacity of HT recipients ≤21 years old with a control group or normative data. Sixteen studies were included. Pediatric HT recipients, as compared to controls or normative data, exhibit significantly higher resting HR, and at peak exercise exhibit significantly decreased HR, VO2 , power, work, minute ventilation, and exercise duration. Peak VO2 appears to improve within the first 2.5 years post-HT; peak work remains constant; and there is inconclusive evidence that peak HR, HR recovery, and HR reserve improve with time since HT. These results are discussed in the context of the mechanisms that may explain the impaired exercise capacity of pediatric HT recipients, including chronotropic incompetence, graft dysfunction, side effects of immunosuppression therapy, and deconditioning. In addition, the limited literature on rehabilitation after pediatric HT is summarized.
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Affiliation(s)
- Sara Peterson
- Division of Pediatric Rehabilitation Medicine, Physical Therapy, Children's Hospital Los Angeles, Los Angeles, CA, USA.,Division of Biokinesiology & Physical Therapy, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - Jennifer A Su
- Division of Cardiology, Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Jacqueline R Szmuszkovicz
- Division of Cardiology, Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Robert Johnson
- Norris Medical Library, University of Southern California, Los Angeles, CA, USA
| | - Barbara Sargent
- Division of Biokinesiology & Physical Therapy, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
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14
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Cote AT, Duff DK, Escudero CA, De Souza AM, Williams LD, Gill R, Zadorsky MT, Harris KC, Potts JE, Sandor GGS. A Doppler Echocardiographic Study of the Myocardial Inotropic Response to Peak Semisupine Exercise in Healthy Children: Development of a Simplified Index of Myocardial Reserve. J Am Soc Echocardiogr 2017; 30:790-796. [PMID: 28599828 DOI: 10.1016/j.echo.2017.04.008] [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: 04/01/2016] [Indexed: 11/18/2022]
Abstract
BACKGROUND Stress echocardiography has been advocated for the detection of abnormal myocardial function and unmasking diminished myocardial reserve in pediatric patients. The aim of this study was to create a simplified index of myocardial reserve, derived from the myocardial inotropic response to peak semisupine exercise in healthy children, and illustrate its applicability in a sample of pediatric oncology patients. METHODS In this prospective analysis, children (7-18 years of age) with normal cardiac structure and function performed semisupine stress echocardiography to volitional fatigue. The quotient of wall stress at peak systole and heart rate-corrected velocity of circumferential fiber shortening were calculated at baseline and at peak exercise, the difference of which was termed the index of myocardial reserve (IMR). The IMR was also calculated in a retrospective sample of pediatric oncology patients with normal resting left ventricular function who had received anthracycline treatment and had performed the same exercise protocol to illustrate utility. RESULTS Fifty healthy subjects (mean age, 13.2 ± 2.6 years) and 33 oncology patients (mean age, 12.7 ± 4.0 years) were assessed. In the healthy children at peak exercise, heart rate-corrected velocity of circumferential fiber shortening significantly increased (from 1.17 ± 0.17 to 1.58 ± 0.24 circ · sec-1, P < .001), while the quotient of wall stress at peak systole significantly decreased (from 75.3 ± 17.1 to 55.3 ± 13.8 g · cm-2, P < .001), shifting the plot of the relationship between the two parameters upward and to the left. The mean IMR was -30.8 ± 17.8, and the normal distribution ranged from -4.7 (fifth percentile) to -67.3 (95th percentile). The IMR was abnormal in 10 oncology patients who were treated with anthracyclines. CONCLUSIONS The authors have developed a novel IMR. Relative to the normal distribution of this IMR in healthy subjects, it is possible to identify patients with abnormal myocardial reserve. Thus, this study demonstrates the application of the IMR to aid in clinical decision making in individual patients.
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Affiliation(s)
- Anita T Cote
- Department of Pediatrics, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - D Kathryn Duff
- School of Kinesiology, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Department of Sport Science, Douglas College, New Westminster, British Columbia, Canada
| | - Carolina A Escudero
- Department of Pediatrics, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Astrid M De Souza
- Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Lindsey D Williams
- Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Raman Gill
- Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - M Terri Zadorsky
- Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Kevin C Harris
- Department of Pediatrics, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - James E Potts
- Department of Pediatrics, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - George G S Sandor
- Department of Pediatrics, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Children's Heart Centre, British Columbia Children's Hospital, Vancouver, British Columbia, Canada.
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15
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Lancellotti P, Pellikka PA, Budts W, Chaudhry FA, Donal E, Dulgheru R, Edvardsen T, Garbi M, Ha JW, Kane GC, Kreeger J, Mertens L, Pibarot P, Picano E, Ryan T, Tsutsui JM, Varga A. The Clinical Use of Stress Echocardiography in Non-Ischaemic Heart Disease: Recommendations from the European Association of Cardiovascular Imaging and the American Society of Echocardiography. J Am Soc Echocardiogr 2017; 30:101-138. [DOI: 10.1016/j.echo.2016.10.016] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Grotenhuis HB, Nyns ECA, Kantor PF, Dipchand AI, Greenway SC, Yoo SJ, Tomlinson G, Chaturvedi RR, Grosse-Wortmann L. Abnormal Myocardial Contractility After Pediatric Heart Transplantation by Cardiac MRI. Pediatr Cardiol 2017; 38:1198-1205. [PMID: 28555404 PMCID: PMC5514218 DOI: 10.1007/s00246-017-1642-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 05/18/2017] [Indexed: 11/27/2022]
Abstract
Acute cellular rejection (ACR) compromises graft function after heart transplantation (HTX). The purpose of this study was to describe systolic myocardial deformation in pediatric HTX and to determine whether it is impaired during ACR. Eighteen combined cardiac magnetic resonance imaging (CMR)/endomyocardial biopsy (EMBx) examinations were performed in 14 HTX patients (11 male, age 13.9 ± 4.7 years; 1.2 ± 1.3 years after HTX). Biventricular function and left ventricular (LV) circumferential strain, rotation, and torsion by myocardial tagging CMR were compared to 11 controls as well as between patients with and without clinically significant ACR. HTX patients showed mildly reduced biventricular systolic function when compared to controls [LV ejection fraction (EF): 55 ± 8% vs. 61 ± 3, p = 0.02; right ventricular (RV) EF: 48 ± 7% vs. 53 ± 6, p = 0.04]. Indexed LV mass was mildly increased in HTX patients (67 ± 14 g/m2 vs. 55 ± 13, p = 0.03). LV myocardial deformation indices were all significantly reduced, expressed by global circumferential strain (-13.5 ± 2.3% vs. -19.1 ± 1.1%, p < 0.01), basal strain (-13.7 ± 3.0% vs. -17.5 ± 2.4%, p < 0.01), mid-ventricular strain (-13.4 ± 2.7% vs. -19.3 ± 2.2%, p < 0.01), apical strain (-13.5 ± 2.8% vs. -19.9 ± 2.0%, p < 0.01), basal rotation (-2.0 ± 2.1° vs. -5.0 ± 2.0°, p < 0.01), and torsion (6.1 ± 1.7° vs. 7.8 ± 1.1°, p < 0.01). EMBx demonstrated ACR grade 0 R in 3 HTX cases, ACR grade 1 R in 11 HTX cases and ACR grade 2 R in 4 HTX cases. When comparing clinically non-significant ACR (grades 0-1 R vs. ACR 2 R), basal rotation, and apical rotation were worse in ACR 2 R patients (-1.4 ± 1.8° vs. -4.2 ± 1.4°, p = 0.01 and 10.2 ± 2.9° vs. 2.8 ± 1.9°, p < 0.01, respectively). Pediatric HTX recipients demonstrate reduced biventricular systolic function and decreased myocardial contractility. Myocardial deformation indices by CMR may serve as non-invasive markers of graft function and, perhaps, rejection in pediatric HTX patients.
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Affiliation(s)
- Heynric B Grotenhuis
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada.
| | - Emile C A Nyns
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Paul F Kantor
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
- Department of Pediatric Cardiology, Stollery Children's Hospital, Edmonton, AB, Canada
| | - Anne I Dipchand
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Steven C Greenway
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
- Departments of Paediatrics and Cardiac Sciences, Alberta Children's Hospital, University of Calgary, Calgary, AB, Canada
| | - Shi-Joon Yoo
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
- Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - George Tomlinson
- Department of Medicine, Toronto General Hospital and Mt. Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - Rajiv R Chaturvedi
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Lars Grosse-Wortmann
- Department of Paediatrics, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
- Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
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17
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Lancellotti P, Pellikka PA, Budts W, Chaudhry FA, Donal E, Dulgheru R, Edvardsen T, Garbi M, Ha JW, Kane GC, Kreeger J, Mertens L, Pibarot P, Picano E, Ryan T, Tsutsui JM, Varga A. The clinical use of stress echocardiography in non-ischaemic heart disease: recommendations from the European Association of Cardiovascular Imaging and the American Society of Echocardiography. Eur Heart J Cardiovasc Imaging 2016; 17:1191-1229. [DOI: 10.1093/ehjci/jew190] [Citation(s) in RCA: 206] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 12/20/2022] Open
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18
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Friedberg MK. Echocardiographic Detection of Heart Transplant Graft Dysfunction. Circ Cardiovasc Imaging 2016; 9:CIRCIMAGING.116.005439. [DOI: 10.1161/circimaging.116.005439] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mark K. Friedberg
- From the Department of Pediatrics, Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, and the University of Toronto, Ontario, Canada
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19
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Ferguson ME, Sachdeva R, Gillespie SE, Morrow G, Border W. Tissue Doppler imaging during exercise stress echocardiography demonstrates a mechanism for impaired exercise performance in children with hypertrophic cardiomyopathy. Echocardiography 2016; 33:1718-1725. [DOI: 10.1111/echo.13316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- Matthew Eric Ferguson
- Sibley Heart Center/Children's Healthcare of Atlanta; Emory University; Atlanta Georgia
| | - Ritu Sachdeva
- Sibley Heart Center/Children's Healthcare of Atlanta; Emory University; Atlanta Georgia
| | - Scott E. Gillespie
- Department of Pediatrics; Emory University School of Medicine; Atlanta Georgia
| | - Gemma Morrow
- Children's Healthcare of Atlanta; Atlanta Georgia
| | - William Border
- Sibley Heart Center/Children's Healthcare of Atlanta; Emory University; Atlanta Georgia
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20
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Cifra B, Mertens L, Mirkhani M, Slorach C, Hui W, Manlhiot C, Friedberg MK, Dragulescu A. Systolic and Diastolic Myocardial Response to Exercise in a Healthy Pediatric Cohort. J Am Soc Echocardiogr 2016; 29:648-54. [DOI: 10.1016/j.echo.2016.02.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Indexed: 10/22/2022]
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21
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Diffuse Myocardial Fibrosis in Children After Heart Transplantations: A Magnetic Resonance T1 Mapping Study. Transplantation 2016; 99:2656-62. [PMID: 26102614 DOI: 10.1097/tp.0000000000000769] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND It is unclear whether the myocardium undergoes accelerated fibrotic remodeling in children after heart transplantation (HTx). METHODS In this prospective study, cardiac magnetic resonance (CMR) studies in 17 patients 1.3 years (median, range 0.03-12.6 years) after HTx (mean age, 9.8 ± 6.2 years; 8 girls) were compared to CMR studies in 9 healthy controls (mean age, 12.4 ± 2.4 years; 4 girls). T1 measurements were performed at a midventricular short axis slice before (ie, native T1 times) and after the application of 0.2 mmol/kg gadopentetate dimeglumine in the interventricular septum, left ventricular (LV) free wall and encompassing the entire LV myocardium. The tissue-blood partition coefficient (TBPC), reflecting the degree of diffuse myocardial fibrosis, was calculated as a function of the ratio of T1 change of myocardium compared to blood. Native T1 times and TBPC were correlated with echocardiographic parameters of diastolic function. RESULTS Native T1 times were significantly higher in HTx patients compared to controls in all regions assessed (LV free wall 973 ± 42 vs 923 ± 12 ms; P < 0.005; interventricular septum 1003 ± 31 vs 974 ± 21 ms, P < 0.05; entire LV myocardium 987 ± 33 vs 951 ± 16 ms; P < 0.005) and correlated with LV E/e' as an echocardiographic marker of diastolic dysfunction (r = 0.54, P < 0.05). The TBPC was elevated in the LV free wall (0.45 ± 0.06 vs 0.40 ± 0.03, P < 0.005) and the entire LV myocardium (0.47 ± 0.06 vs 0.43 ± 0.03, P < 0.05). CONCLUSIONS Evidence of diffuse myocardial fibrosis and is already present in children after HTx. It appears to be associated with diastolic dysfunction.
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22
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Clemmensen TS, Eiskjær H, Løgstrup BB, Tolbod LP, Harms HJ, Bouchelouche K, Hoff C, Frøkiær J, Poulsen SH. Noninvasive Detection of Cardiac Allograft Vasculopathy by Stress Exercise Echocardiographic Assessment of Myocardial Deformation. J Am Soc Echocardiogr 2016; 29:480-90. [PMID: 26898523 DOI: 10.1016/j.echo.2016.01.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the value of noninvasive assessment of cardiac allograft vasculopathy (CAV) in heart-transplanted patients by exercise stress myocardial deformation and coronary flow reserve (CFR) assessment. METHODS Fifty-eight heart-transplanted patients underwent semisupine exercise echocardiography with assessment of left ventricular (LV) longitudinal myocardial deformation. CAV was assessed by coronary angiography and noninvasive CFR by (15)O-H2O positron emission tomographic imaging and Doppler echocardiography. Patients were divided into three groups on the basis of angiographic CAV: no CAV (n = 21), mild CAV (n = 19), and severe CAV (n = 18). RESULTS Patients with severe CAV had significantly lower LV global longitudinal strain (GLS) at rest (no CAV, -16 ± 2%; mild CAV, -15 ± 2%; severe CAV, -12 ± 4%; P < .001), failed to increase LV GLS during exercise (no CAV, -5.7 ± 2.0%; mild CAV, -3.3 ± 2.9%; severe CAV, -0.2 ± 2.8%; P < .0001), and had significantly lower echocardiographic coronary flow velocity reserve (CFVR) (no CAV, 3.2 ± 0.4; mild CAV, 2.7 ± 0.7; severe CAV, 1.8 ± 0.5; P < .0001) and PET CFR (no CAV, 3.4 ± 0.9; mild CAV, 3.1 ± 0.9; severe CAV, 1.9 ± 0.8; P < .0001). Furthermore, patients with mild CAV had significantly lower exercise LV GLS and echocardiographic CFVR than patients with no CAV. Exercise LV GLS, echocardiographic CFVR, and PET CFR were significantly correlated with the presence of severe CAV in a logistic regression model (LV GLS odds ratio, 0.71; 95% CI, 0.60-0.84; P < .0001; echocardiographic CFVR odds ratio: 0.06; 95% CI, 0.01-0.23; PET CFR odds ratio, 0.17; 95% CI, 0.07-0.46). This relation remained significant after adjustment for symptoms and time since transplantation. CONCLUSIONS Noninvasive assessment of LV longitudinal myocardial deformation during exercise is feasible and strongly associated with the presence and degree of CAV. Exercise stress myocardial deformation analysis, echocardiographic CFVR, or PET CFR may serve as a noninvasive model for the detection of CAV.
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Affiliation(s)
| | - Hans Eiskjær
- Department of Cardiology, Aarhus University Hospital, Skejby, Denmark
| | | | - Lars Poulsen Tolbod
- Department of Nuclear Medicine & PET Center, Aarhus University Hospital, Skejby, Denmark
| | - Hendrik J Harms
- Department of Nuclear Medicine & PET Center, Aarhus University Hospital, Skejby, Denmark
| | - Kirsten Bouchelouche
- Department of Nuclear Medicine & PET Center, Aarhus University Hospital, Skejby, Denmark
| | - Camilla Hoff
- Department of Nuclear Medicine & PET Center, Aarhus University Hospital, Skejby, Denmark
| | - Jørgen Frøkiær
- Department of Nuclear Medicine & PET Center, Aarhus University Hospital, Skejby, Denmark
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23
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Clemmensen TS, Løgstrup BB, Eiskjaer H, Poulsen SH. Coronary Flow Reserve Predicts Longitudinal Myocardial Deformation Capacity in Heart-Transplanted Patients. Echocardiography 2015; 33:562-71. [PMID: 26603966 DOI: 10.1111/echo.13123] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
AIMS This study aimed to evaluate the role of microvascular dysfunction on left ventricular (LV) longitudinal deformation, filling pressures, and exercise capacity in heart-transplanted (HTx) patients. METHODS AND RESULTS Fifty-seven HTx patients underwent comprehensive echocardiographic graft function assessment during symptom-limited, semisupine exercise test with simultaneous right heart catheterization. Coronary flow velocity reserve (CFVR) was measured in the left anterior descending artery using pulsed Doppler echocardiography. We divided patients into two groups based on upper and lower median of CFVR. Twenty-six healthy subjects served as controls. Compared with healthy controls, HTx patients had reduced CFVR (P < 0.0001), exercise capacity (P < 0.0001), and LV longitudinal deformation capacity (P < 0.0001). HTx patients in the reduced CFVR group (CFVR < 2.73) were more symptomatic (P < 0.0001) and had higher prevalence of coronary cardiac allograft vasculopathy (CAV) (P < 0.0001) than patients in the high CFVR group. Systolic function improved in both HTx groups during exercise. However, LV longitudinal myocardial deformation improved significantly more in the high CFVR group (P < 0.0001). Peak exercise LV global longitudinal strain and CFVR were strongly correlated (r = 0.8, P < 0.0001). A weak correlation was observed between CFVR and invasive cardiac index at peak exercise (r = 0.35, P < 0.01) and CFVR and LV filling measured by E/e' ratio (r = -0.41, P < 0.01) and pulmonary capillary wedge pressure (r = -0.30, P < 0.05). CONCLUSION HTx patients have reduced CFVR, exercise capacity, and LV longitudinal myocardial deformation capacity compared with healthy individuals. HTx patients with reduced CFVR are more symptomatic and have increased prevalence of CAV. Furthermore, reduced CFVR is correlated with reduced LV longitudinal myocardial deformation and exercise capacity.
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Affiliation(s)
| | | | - Hans Eiskjaer
- Department of Cardiology, Aarhus University Hospital, Skejby, Denmark
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Cifra B, Dragulescu A, Border WL, Mertens L. Stress echocardiography in paediatric cardiology. Eur Heart J Cardiovasc Imaging 2015; 16:1051-9. [DOI: 10.1093/ehjci/jev159] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 05/25/2015] [Indexed: 01/08/2023] Open
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