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An Y, Xue L, Xu L, Zhang C, Yang Y, Liu Y, Ma N. Evaluation the Effect of Anthracyclines on Cardiac Function in Children Lymphoma Survivors by Left Ventricular Myocardial Work. Pediatr Cardiol 2024:10.1007/s00246-024-03480-2. [PMID: 38662212 DOI: 10.1007/s00246-024-03480-2] [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: 12/16/2023] [Accepted: 03/20/2024] [Indexed: 04/26/2024]
Abstract
Anthracycline chemotherapy is associated with the left ventricular (LV) dysfunction, but the conventional echocardiographic parameter is insensitive in detecting subclinical cardiac dysfunction, and the role of echocardiography in children cancer survivors (CCSs) has not been well established. Here, the myocardial work (MW) was employed to evaluate the early effect of the anthracyclines on LV function in children lymphoma survivors, as well as to explore the clinical application value of this modality. 51 children lymphoma survivors treated with anthracyclines were included. During the treatments, the echocardiography was performed at baseline (T0 phase), the 3rd (T1 phase) and 6th (T2 phase) chemotherapeutic cycle, respectively. After that, the conventional echocardiographic parameters, LV global longitudinal strain (GLS), and global myocardial work (GMW) parameters were obtained. Finally, these echocardiographic parameters were compared to distinguish the differences among three groups, and correlation analysis was used to identify relationship between GMW parameters and LV GLS. Compared with the baseline, we found that there are no significant differences for LVEF and other conventional echocardiographic parameters after chemotherapy, but the value of LV lateral E/E' increased at T1 and T2 group. The GLS, global work index, global constructed work, and global work efficiency were decreased, while the global wasted work was increased after chemotherapy (all P < 0.05). The correlation analysis showed that the GLS has significant correlation with GMW parameters (all P < 0.001). The MW, as a new noninvasive echocardiography modality, could be used to quantitatively evaluate the LV MW in children lymphoma survivors treated with anthracyclines, which providing a sensitive method to early detect the children's LV dysfunction after the chemotherapy.
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Affiliation(s)
- Yuqiong An
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China
| | - Li Xue
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China
| | - Liyuan Xu
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China
| | - Chao Zhang
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China
| | - Yijie Yang
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China
| | - Yong Liu
- Department of Ultrasound, Beijing-Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Ning Ma
- Heart Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Xicheng District, Beijing, 100045, China.
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Mosgrove MJ, Sachdeva R, Stratton KL, Armenian SH, Bhat A, Leger KJ, Yang C, Leisenring WM, Meacham LR, Sadak KT, Narasimhan SL, Nathan PC, Chow EJ, Border WL. Utility of apical four-chamber longitudinal strain in the assessment of childhood cancer survivors: A multicenter study. Echocardiography 2024; 41:e15766. [PMID: 38340258 DOI: 10.1111/echo.15766] [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: 06/12/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND A previous multicenter study showed that longitudinal changes in standard cardiac functional parameters were associated with the development of cardiomyopathy in childhood cancer survivors (CCS). Evaluation of the relationship between global longitudinal strain (GLS) changes and cardiomyopathy risk was limited, largely due to lack of quality apical 2- and 3-chamber views in addition to 4-chamber view. We sought to determine whether apical 4-chamber longitudinal strain (A4LS) alone can serve as a suitable surrogate for GLS in this population. METHODS A4LS and GLS were measured in echocardiograms with acceptable apical 2-, 3-, and 4-chamber views. Correlation was evaluated using Pearson and Spearman coefficients, and agreement was evaluated with Bland-Altman plots. The ability of A4LS to identify normal and abnormal values compared to GLS as the reference was evaluated. RESULTS Among a total of 632 reviewed echocardiograms, we identified 130 echocardiograms from 56 patients with adequate views (38% female; mean age at cancer diagnosis 8.3 years; mean follow-up 9.4 years). Correlation coefficients between A4LS and GLS were .89 (Pearson) and .85 (Spearman), with Bland-Altman plot of GLS-A4LS showing a mean difference of -.71 ± 1.8. Compared with GLS as the gold standard, A4LS had a sensitivity of 86% (95% CI 79%-93%) and specificity of 82% (69%-95%) when using normal range cutoffs and 90% (82%-97%) and 70% (58%-81%) when using ±2 standard deviations. CONCLUSION A4LS performs well when compared with GLS in this population. Given the more recent adoption of apical 2- and 3-chamber views in most pediatric echocardiography laboratories, A4LS is a reasonable stand-alone measurement in retrospective analyses of older study cohorts and echocardiogram biorepositories.
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Affiliation(s)
- Matthew J Mosgrove
- Emory University School of Medicine, Atlanta, Georgia, USA
- Children's Medical Center, University of Texas Southwestern, Dallas, Texas, USA
| | - Ritu Sachdeva
- Emory University School of Medicine, Atlanta, Georgia, USA
- Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | | | | | - Aarti Bhat
- University of Washington, Seattle Children's Hospital, Seattle, Washington, USA
| | - Kasey J Leger
- University of Washington, Seattle Children's Hospital, Seattle, Washington, USA
| | - Christina Yang
- University of Washington, Seattle Children's Hospital, Seattle, Washington, USA
- Children's National Medical Center, George Washington University, Washington, District of Columbia, USA
| | | | | | - Karim T Sadak
- University of Minnesota, Masonic Children's Hospital, Minneapolis, Minnesota, USA
| | - Shanti L Narasimhan
- University of Minnesota, Masonic Children's Hospital, Minneapolis, Minnesota, USA
| | - Paul C Nathan
- University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Eric J Chow
- Fred Hutchinson Cancer Center, Seattle, Washington, USA
- University of Washington, Seattle Children's Hospital, Seattle, Washington, USA
| | - William L Border
- Emory University School of Medicine, Atlanta, Georgia, USA
- Children's Healthcare of Atlanta, Atlanta, Georgia, USA
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Das B. Pharmacotherapy for Cancer Treatment-Related Cardiac Dysfunction and Heart Failure in Childhood Cancer Survivors. Paediatr Drugs 2023; 25:695-707. [PMID: 37639193 DOI: 10.1007/s40272-023-00585-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/06/2023] [Indexed: 08/29/2023]
Abstract
The number of childhood cancer survivors is increasing rapidly. According to American Association for Cancer Research, there are more than 750,000 childhood cancer survivors in the United States and Europe. As the number of childhood cancer survivors increases, so does cancer treatment-related cardiac dysfunction (CTRCD), leading to heart failure (HF). It has been reported that childhood cancer survivors who received anthracyclines are 15 times more likely to have late cancer treatment-related HF and have a 5-fold higher risk of death from cardiovascular (CV) disease than the general population. CV disease is the leading cause of death in childhood cancer survivors. The increasing need to manage cancer survivor patients has led to the rapid creation and adaptation of cardio-oncology. Cardio-oncology is a multidisciplinary science that monitors, treats, and prevents CTRCD. Many guidelines and position statements have been published to help diagnose and manage CTRCD, including those from the American Society of Clinical Oncology, the European Society of Cardiology, the Canadian Cardiovascular Society, the European Society of Medical Oncology, the International Late Effects of Childhood Cancer Guideline Harmonization Group, and many others. However, there remains a gap in identifying high-risk patients likely to develop cardiomyopathy and HF in later life, thus reducing primary and secondary measures being instituted, and when to start treatment when there is echocardiographic evidence of left ventricular (LV) dysfunctions without symptoms of HF. There are no randomized controlled clinical trials for treatment for CTRCD leading to HF in childhood cancer survivors. The treatment of HF due to cancer treatment is similar to the guidelines for general HF. This review describes the latest pharmacologic therapy for preventing and treating LV dysfunction and HF in childhood cancer survivors based on expert consensus guidelines and extrapolating data from adult HF trials.
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Affiliation(s)
- Bibhuti Das
- Division of Pediatric Cardiology, Department of Pediatrics, Baylor Scott and White McLane Children's Medical Center, Temple, TX, 76502, USA.
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Engan B, Diab S, Brun H, Raastad T, Torsvik IK, Omdal TR, Ghavidel FZ, Greve G, Ruud E, Edvardsen E, Leirgul E. Systolic myocardial function measured by echocardiographic speckle-tracking and peak oxygen consumption in pediatric childhood cancer survivors-a PACCS study. Front Cardiovasc Med 2023; 10:1221787. [PMID: 37476575 PMCID: PMC10354364 DOI: 10.3389/fcvm.2023.1221787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/22/2023] [Indexed: 07/22/2023] Open
Abstract
Background Cancer therapy-related cardiotoxicity is a major cause of cardiovascular morbidity in childhood cancer survivors. The aims of this study were to investigate systolic myocardial function and its association to cardiorespiratory fitness in pediatric childhood cancer survivors. Methods In this sub-study of the international study "Physical Activity and fitness in Childhood Cancer Survivors" (PACCS), echocardiographic measures of left ventricular global longitudinal strain (LV-GLS) and right ventricular longitudinal strain (RV-LS) were measured in 128 childhood cancer survivors aged 9-18 years and in 23 age- and sex-matched controls. Cardiorespiratory fitness was measured as peak oxygen consumption achieved on treadmill and correlated to myocardial function. Results Mean LV-GLS was reduced in the childhood cancer survivors compared to the controls, -19.7% [95% confidence interval (CI) -20.1% to -19.3%] vs. -21.3% (95% CI: -22.2% to -20.3%) (p = 0.004), however, mainly within normal range. Only 13% of the childhood cancer survivors had reduced LV longitudinal strain z-score. Mean RV-LS was similar in the childhood cancer survivors and the controls, -23.2% (95% CI: -23.7% to -22.6%) vs. -23.3% (95% CI: -24.6% to -22.0%) (p = 0.8). In the childhood cancer survivors, lower myocardial function was associated with lower peak oxygen consumption [correlation coefficient (r) = -0.3 for LV-GLS]. Higher doses of anthracyclines (r = 0.5 for LV-GLS and 0.2 for RV-LS) and increasing time after treatment (r = 0.3 for LV-GLS and 0.2 for RV-LS) were associated with lower myocardial function. Conclusions Left ventricular function, but not right ventricular function, was reduced in pediatric childhood cancer survivors compared to controls, and a lower left ventricular myocardial function was associated with lower peak oxygen consumption. Furthermore, higher anthracycline doses and increasing time after treatment were associated with lower myocardial function, implying that long-term follow-up is important in this population at risk.
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Affiliation(s)
- Britt Engan
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Simone Diab
- Department of Pediatric Cardiology, Oslo University Hospital, Oslo, Norway
| | - Henrik Brun
- Department of Pediatric Cardiology, Oslo University Hospital, Oslo, Norway
- The Intervention Centre, Technology and Innovation Clinic, Oslo University Hospital, Oslo, Norway
| | - Truls Raastad
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Ingrid Kristin Torsvik
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Tom Roar Omdal
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | | | - Gottfried Greve
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Ellen Ruud
- Department of Pediatric Medicine, Oslo University Hospital, Oslo, Norway
| | - Elisabeth Edvardsen
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Elisabeth Leirgul
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
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Tolani D, Wilcox J, Shyam S, Bansal N. Cardio-oncology for Pediatric and Adolescent/Young Adult Patients. Curr Treat Options Oncol 2023:10.1007/s11864-023-01100-4. [PMID: 37296365 DOI: 10.1007/s11864-023-01100-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2023] [Indexed: 06/12/2023]
Abstract
OPINION STATEMENT As chemotherapy continues to improve the lives of patients with cancer, understanding the effects of these drugs on other organ systems, and the cardiovascular system in particular, has become increasingly important. The effects of chemotherapy on the cardiovascular system are a major determinant of morbidity and mortality in these survivors. Although echocardiography continues to be the most widely used modality for assessing cardiotoxicity, newer imaging modalities and biomarker concentrations may detect subclinical cardiotoxicity earlier. Dexrazoxane continues to be the most effective therapy for preventing anthracycline-induced cardiomyopathy. Neurohormonal modulating drugs have not prevented cardiotoxicity, so their widespread, long-term use for all patients is currently not recommended. Advanced cardiac therapies, including heart transplant, have been successful in cancer survivors with end-stage HF and should be considered for these patients. Research on new targets, especially genetic associations, may produce treatments that help reduce cardiovascular morbidity and mortality.
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Affiliation(s)
- Drishti Tolani
- Division of Pediatric Cardiology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Julia Wilcox
- Albert Einstein College of Medicine, Bronx, NY, USA
| | - Sharvari Shyam
- Division of Pediatrics, St. Barnabas Hospital, Bronx, NY, USA
| | - Neha Bansal
- Division of Pediatric Cardiology, Mount Sinai Kravis Children's Hospital, New York, NY, USA.
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Lapointe MO, Caru M, Curnier D, Raboisson MJ, Andelfinger G, Krajinovic M, Laverdière C, Sinnett D, Périé D. Dexrazoxane Treatments Limits Subclinical Cardiac Dysfunction in Childhood Acute Lymphoblastic Leukemia Survivors Exposed to Doxorubicin Treatments. J Pediatr Hematol Oncol 2023; 45:70-77. [PMID: 36161876 DOI: 10.1097/mph.0000000000002538] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 07/11/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Doxorubicin leads to dose dependent cardiotoxicity in childhood acute lymphoblastic leukemia (ALL) survivors. We investigated survivors' heart health using echocardiography and evaluated doxorubicin and dexrazoxane treatments on cardiac function. METHODS A total of 196 childhood ALL survivors were stratified (standard risk [SR], high risk with and without dexrazoxane (HR+DEX and HR). We performed a complete transthoracic echocardiographic assessment with M-mode echocardiography, Doppler, and Tissue Doppler. We used 2-dimensional and 3-dimensional echocardiography to measure the left ventricular ejection fraction, whereas myocardial strain imaging was used to obtain global strain indices. RESULTS Although most cardiac and arterial dimension parameters were not different between groups, a difference was observed in posterior intima of the right carotid ( P =0.017). Diastolic functions analyses reported that LV shortening fraction and left and right ventricular lateral S' wave amplitudes were lower in HR than in SR and HR+DEX groups ( P =0.028, P =0.048, and P =0.005, respectively). The LV lateral E' in diastolic function was lower in the HR than in SR and HR+DEX groups ( P =0.036). The LV end-systolic wall stress was higher in HR than in SR and HR+DEX groups ( P =0.009). A decrease contractility was observed, while the effect was not group specific. Strain rate was not different between groups, as opposed to tissue Doppler measurements. CONCLUSIONS This study showed that dexrazoxane treatments could limit subclinical cardiac dysfunction in childhood ALL survivors, whereas survivors in HR group who did not receive dexrazoxane had potential subclinical cardiac damage observable in heart failure patients. Echocardiographic screening for survivors must be part of the follow-up routine in cardio-oncology.
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Affiliation(s)
- Marc-Olivier Lapointe
- Department of Mechanical Engineering, Polytechnique
- Sainte-Justine University Health Center, Research Center
| | - Maxime Caru
- Department of Mechanical Engineering, Polytechnique
- Sainte-Justine University Health Center, Research Center
| | - Daniel Curnier
- Sainte-Justine University Health Center, Research Center
- School of Kinesiology and Physical Activity Sciences, Faculty of Medicine
| | | | - Gregor Andelfinger
- Sainte-Justine University Health Center, Research Center
- Department of Pediatrics, University of Montreal, Montreal, QC, Canada
| | - Maja Krajinovic
- Sainte-Justine University Health Center, Research Center
- Department of Pediatrics, University of Montreal, Montreal, QC, Canada
| | - Caroline Laverdière
- Sainte-Justine University Health Center, Research Center
- Department of Pediatrics, University of Montreal, Montreal, QC, Canada
| | - Daniel Sinnett
- Sainte-Justine University Health Center, Research Center
- Department of Pediatrics, University of Montreal, Montreal, QC, Canada
| | - Delphine Périé
- Department of Mechanical Engineering, Polytechnique
- Sainte-Justine University Health Center, Research Center
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Risk Factors for Symptomatic Pericardial Effusions Posthematopoietic Stem Cell Transplant. J Transplant 2023; 2023:7455756. [PMID: 36818524 PMCID: PMC9931484 DOI: 10.1155/2023/7455756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 01/05/2023] [Accepted: 01/20/2023] [Indexed: 02/11/2023] Open
Abstract
Background Pericardial effusions are a known complication posthematopoietic stem cell transplant (HSCT), causing significant morbidity. We aimed to evaluate the risk factors associated with the development of high-grade effusions requiring interventions. Procedure. A retrospective chart review of all HSCT patients over a period of 7 years (2013-2019) in a single institution in the Northeastern United States is conducted. All patients who developed an effusion requiring intervention were included. Patient's clinical characteristics were compared with all others transplanted during the same time period. Echocardiogram findings of the affected patients were compared to a case-control cohort of unaffected patients with similar age and diagnosis. Chi-square and paired t-tests were utilized to ascertain statistical differences between the groups. Results A total of 15 patients out of 201 (7.5%) transplanted at our institution developed a moderate or large pericardial effusion requiring pericardiocentesis or a pericardial window. Of this cohort, 13 (87%) underwent a myeloablative preparative regimen, 13 (87%) had cyclophosphamide as part of their regimen, 13 (87%) had recent treatment for viral reactivation, 6 (40%) had an underlying hemoglobinopathy diagnosis, and only 4 (27%) had an active diagnosis of GVHD. A myeloablative preparative regimen had a higher rate of effusion requiring intervention, although it was not statistically significant, and concurrent GVHD was not predictive of effusion development. However, exposure to cyclophosphamide, recent treatment for viral reactivation, and a diagnosis of transplant-associated thrombotic microangiopathy (Ta-TMA) were highly associated with effusions. The latter was associated with increased mortality. The duration of pericardial effusion correlated with the pretransplant echocardiogram left ventricle end diastolic diameter z-score and apical 4-chamber left ventricular peak average strain measurement. Conclusions Potential risk factors for pericardial effusions post-HSCT include a diagnosis of Ta-TMA, active viral infection, exposure to cyclophosphamide, and a higher left ventricle end diastolic diameter z-score. This information may help guide management for these patients, including identifying high-risk subjects, determining the frequency of echocardiograms, and determining specific echocardiogram measures to follow over time.
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Hegazy M, Ghaleb S, Das BB. Diagnosis and Management of Cancer Treatment-Related Cardiac Dysfunction and Heart Failure in Children. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10010149. [PMID: 36670699 PMCID: PMC9856743 DOI: 10.3390/children10010149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023]
Abstract
It is disheartening for parents to discover that their children have long-term cardiac dysfunction after being cured of life-threatening childhood cancers. As the number of childhood cancer survivors increases, early and late oncology-therapy-related cardiovascular complications continues to rise. It is essential to understand that cardiotoxicity in childhood cancer survivors is persistent and progressive. A child's cancer experience extends throughout his lifetime, and ongoing care for long-term survivors is recognized as an essential part of the cancer care continuum. Initially, there was a lack of recognition of late cardiotoxicities related to cancer therapy. About 38 years ago, in 1984, pioneers like Dr. Lipshultz and others published anecdotal case reports of late cardiotoxicities in children and adolescents exposed to chemotherapy, including some who ended up with heart transplantation. At that time, cardiac tests for cancer survivors were denied by insurance companies because they did not meet appropriate use criteria. Since then, cardio-oncology has been an emerging field of cardiology that focuses on the early detection of cancer therapy-related cardiac dysfunction occurring during and after oncological treatment. The passionate pursuit of many healthcare professionals to make life better for childhood cancer survivors led to more than 10,000 peer-reviewed publications in the last 40 years. We synthesized the existing evidence-based practice and described our experiences in this review to share our current method of surveillance and management of cardiac dysfunction related to cancer therapy. This review aims to discuss the pathological basis of cancer therapy-related cardiac dysfunction and heart failure, how to stratify patients prone to cardiotoxicity by identifying modifiable risk factors, early detection of cardiac dysfunction, and prevention and management of heart failure during and after cancer therapy in children. We emphasize serial longitudinal follow-ups of childhood cancer survivors and targeted intervention for high-risk patients. We describe our experience with the new paradigm of cardio-oncology care, and collaboration between cardiologist and oncologist is needed to maximize cancer survival while minimizing late cardiotoxicity.
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Affiliation(s)
- Mohamed Hegazy
- University of Mississippi Medical Center Program, Jackson, MS 39216, USA
| | - Stephanie Ghaleb
- Division of Pediatric Cardiology, Department of Pediatrics, Children’s of Mississippi Heart Center, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Bibhuti B Das
- Division of Pediatric Cardiology, Department of Pediatrics, McLane Children’s Baylor Scott and White Medical Center, Baylor College of Medicine-Temple, Temple, TX 76502, USA
- Correspondence: ; Tel.: +1-254-935-4980
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von Scheidt F, Pleyer C, Kiesler V, Bride P, Bartholomae S, Krämer J, Kaestner M, Apitz C. Left Ventricular Strain Analysis During Submaximal Semisupine Bicycle Exercise Stress Echocardiography in Childhood Cancer Survivors. J Am Heart Assoc 2022; 11:e025324. [PMID: 35861837 PMCID: PMC9707818 DOI: 10.1161/jaha.122.025324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Background Childhood cancer survivors (CCSs) show relevant cardiac morbidity and mortality throughout life. Early detection is key for optimal support of patients at risk. The aim of this study was to evaluate 2‐dimensional speckle‐tracking echocardiography strain analysis during semisupine exercise stress in CCSs for detection of subclinical left ventricular dysfunction after cancer treatment. Methods and Results Seventy‐seven CCSs ≥1‐year postchemotherapy were prospectively examined at rest, low, and submaximal stress level and compared with a cohort of healthy adolescents and young adults (n=50). Global longitudinal strain (GLS), short axis circumferential strain, and corresponding strain rates were analyzed using vendor‐independent software. CCSs at median 7.8 years postchemotherapy showed comparable left ventricular GLS, circumferential strain, and strain rate values at all stress stages to healthy controls. Yet, prevalence of abnormal GLS (defined as <2 SD of controls reference) in CCSs was 1.3% at rest, 2.7% at low, and 8.6% at submaximal stress. In CCSs, relative change of circumferential strain from rest to submaximal stress was lower than in healthy controls, median 16.9 (interquartile range [IQR], 3.4; 28.8) % versus 23.3 (IQR, 11.3; 33.3) %, P=0.03, most apparent in the subgroups of CCSs after high‐dose anthracycline treatment and cancer diagnosis before the age of 5 years. Conclusions In this prospective 2‐dimensional speckle tracking echocardiography strain study, prevalence of abnormal left ventricular GLS increased with stress level reflecting impaired cardiac adaptation to exercise stress in some CCSs. However, relatively early after last chemotherapy, this did not result in significant differences of mean GLS‐, circumferential strain‐, and strain rate values between CCSs and controls at any stress level.
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Affiliation(s)
- Fabian von Scheidt
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Christine Pleyer
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Verena Kiesler
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Peter Bride
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Stephan Bartholomae
- Division of Pediatric Oncology, Children’s Hospital University of Ulm Germany
| | - Johannes Krämer
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Michael Kaestner
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
| | - Christian Apitz
- Division of Pediatric Cardiology, Children’s Hospital University of Ulm Germany
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Cacciotti C, Chordas C, Valentino K, Allen R, Lenzen A, Burns K, Nagarajan R, Manley P, Pillay-Smiley N. Cardiac Dysfunction in Medulloblastoma Survivors Treated with Photon Irradiation. Neurooncol Pract 2022; 9:338-343. [PMID: 35859541 PMCID: PMC9290868 DOI: 10.1093/nop/npac030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Medulloblastoma is an aggressive central nervous system (CNS) tumor that occurs mostly in the pediatric population. Treatment often includes a combination of surgical resection, craniospinal irradiation (CSI) and chemotherapy. Children who receive standard photon CSI are at risk for cardiac toxicities including coronary artery disease, left ventricular scarring and dysfunction, valvular damage, and atherosclerosis. Current survivorship guidelines recommend routine echocardiogram (ECHO) surveillance. In this multi-institution study, we describe markers of cardiac dysfunction in medulloblastoma survivors.
Methods
A retrospective chart review of medulloblastoma patients who had photon beam CSI followed by ECHO between 1980 and 2010 at Lurie Children’s Hospital and Dana-Farber/Boston Children’s Hospital.
Results
During the 30-year study period, 168 medulloblastoma patient records were identified. Included in this study were the 75 patients who received CSI or spinal radiation and ECHO follow up. The mean age at CSI was 8.6 years (range, 2.9-20), and the mean number of years between radiation (RT) completion and first ECHO was 7.4 (range, 2-16). Mean ejection fraction (EF) was 60.0% and shortening fraction (SF) was 33.8%. Five patients (7%) had abnormal ECHO results: three with EF <50% and two with SF <28%.
Conclusion
Majority of medulloblastoma patients who received CSI have relatively normal ECHOs post treatment, however 7% of patients had abnormal ECHOs. The implication of our study for medulloblastoma survivors is that further investigations are needed in this populations with a more systematic, longitudinal assessment to determine predictors and screenings.
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Affiliation(s)
- Chantel Cacciotti
- Dana Farber / Boston Children’s Cancer and Blood Disorder Center, Boston MA
- Children’s Hospital London Health Sciences/Western University, London, ON
| | - Christine Chordas
- Dana Farber / Boston Children’s Cancer and Blood Disorder Center, Boston MA
| | - Katie Valentino
- Ann & Robert H. Lurie Children’s Hospital/Northwestern University, Chicago IL
| | - Rudy Allen
- Ann & Robert H. Lurie Children’s Hospital/Northwestern University, Chicago IL
| | - Alicia Lenzen
- Ann & Robert H. Lurie Children’s Hospital/Northwestern University, Chicago IL
| | - Karen Burns
- Cincinnati Children’s Hospital Medical Center/University of Cincinnati, Cincinnati OH
| | - Rajaram Nagarajan
- Cincinnati Children’s Hospital Medical Center/University of Cincinnati, Cincinnati OH
| | - Peter Manley
- Dana Farber / Boston Children’s Cancer and Blood Disorder Center, Boston MA
| | - Natasha Pillay-Smiley
- Ann & Robert H. Lurie Children’s Hospital/Northwestern University, Chicago IL
- Cincinnati Children’s Hospital Medical Center/University of Cincinnati, Cincinnati OH
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Li VWY, So EKF, Wong WHS, Cheung YF. Myocardial Deformation Imaging by Speckle Tracking Echocardiography for Assessment of Cardiotoxicity in Children During and After Chemotherapy: A Systematic Review and Meta-analysis. J Am Soc Echocardiogr 2022; 35:629-656. [PMID: 35149208 DOI: 10.1016/j.echo.2022.01.017] [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: 05/05/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Childhood cancer patients and childhood cancer survivors (CCS) are at risk of developing chemotherapy-induced cardiomyopathy. Myocardial deformation imaging has shown potential in the early detection of subclinical myocardial damage with implications on therapeutic interventions and improvement of outcomes. We aimed to perform a systemic review and meta-analysis of literature on the assessment of left (LV) and right ventricular (RV) myocardial deformation by speckle tracking echocardiography (STE) at rest and during stress in childhood cancer patients during and in survivors after chemotherapy. METHODS A systematic review was performed through searching MEDLINE, Embase, Cumulative Index to Nursing and Allied Health Literature, Cochrane Central Register of Controlled Trials, and Scopus. Search hedges were created to cover the concepts of childhood cancer, chemotherapy, radiotherapy, anthracycline, cardiotoxicity, speckle tracking, myocardial strain, and myocardial deformation. Two independent investigators reviewed the eligibility of the articles for inclusion. Weighted mean difference in ventricular strain between pre-and post-chemotherapy treatment and that between long-term CCS and healthy subjects were estimated by random-effect models with 95% confidence intervals. Heterogeneity and publication bias were assessed by I2 statistics and Egger test, respectively. RESULTS Of the total of 8703 records initially identified, 42 studies with a total of 430 childhood cancer patients were included. Of these 42 studies that showed heterogeneities, 9 assessed early myocardial injury during chemotherapy, 30 assessed late myocardial injury after chemotherapy with no publication bias, and 3 studied myocardial mechanics during stress. The main findings were 1) impairment of LV systolic deformation in childhood cancer patients during the initial treatment phase and among long-term CCS, while data on changes in RV deformation are limited and inconclusive, 2) the predictive value of early reduction of myocardial strain imaging in forecasting subsequent development of cardiotoxicity is unknown as it has not been studied, 3) limited data suggest possibility of impaired LV contractile mechanics during stress in CCS, and 4) cumulative anthracycline dose and chest-directed radiotherapy are consistently identified as factors associated with impaired myocardial deformation.results CONCLUSIONS: Myocardial strain imaging by STE unveils early evidence of myocardial injury in childhood cancer patients and long-term CCS. To support its adoption for clinical use, more data are required for the better understating of myocardial deformation parameters in the risk stratification of childhood cancer patients and prediction of development of cardiomyopathy among CCS.
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Affiliation(s)
- Vivian Wing-Yi Li
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Edwina Kam-Fung So
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Wilfred Hing-Sang Wong
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Yiu-Fai Cheung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.
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12
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Wan Y, Zhu D, He B, Guo Y, Wang L, Dingda D, Laji A, Wang C, Zhang Y, Gao F. Protective effect of a chronic hypobaric hypoxic environment at high altitude on cardiotoxicity induced by doxorubicin in rats: a 7 T magnetic resonance study. Quant Imaging Med Surg 2022; 12:711-725. [PMID: 34993113 DOI: 10.21037/qims-21-360] [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: 04/01/2021] [Accepted: 08/06/2021] [Indexed: 02/05/2023]
Abstract
Background Doxorubicin (DOX)-induced cardiotoxicity (DIC), a major clinical problem, has no effective preventive therapies. We hypothesized that left ventricular (LV) systolic function would be improved in a chronic hypobaric hypoxia environment at high altitude. The purpose of this study was to investigate whether cardiovascular magnetic resonance could reveal the cardioprotective effect of chronic hypobaric hypoxia on DIC. Methods In total, 60 rats were randomly assigned to 1 of 6 groups (n=10 per group): the P group (plain), PD group (plain + DOX), HH group (high altitude), HHD4 group (high altitude + DOX for 4 weeks), HHD8 group (high altitude + DOX for 8 weeks), and HHD12 group (high altitude + DOX for 12 weeks). The rats were transported to either Yushu (altitude: 4,250 m) or Chengdu (altitude: 500 m) where they underwent intraperitoneal injection of DOX (5 mg/kg/week for 3 weeks) or saline. Preclinical 7 T cardiovascular magnetic resonance was performed at weeks 4, 8, and 12. Tissue tracking was used to measure LV cardiac function and to analyze global and segmental strains. Subsequently, histological and oxidative stress tests were performed to evaluate the protective effect of a high-altitude environment on DIC. Results The left ventricular ejection fraction (LVEF) and global and regional strains in the middle, apical, anterior, septal, inferior, and lateral segments (all P<0.05) were improved in the HHD4 group compared with the PD group. The global strain was significantly greater in absolute value in the HHD8 and HHD12 groups than in the HHD4 group (all P<0.05). Additionally, histological and enzyme-linked immunosorbent assay evaluations supported the in vivo results. Conclusions A chronic hypobaric and hypoxic environment at high altitude partially prevented cardiac dysfunction and increased global and regional strain in DIC rat models, thereby minimizing myocardial injury and fibrosis. In addition, by increasing the total duration of chronic hypobaric hypoxia, the global strain was further increased, which was likely due to reduced oxidative stress.
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Affiliation(s)
- Yixuan Wan
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Dongyong Zhu
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Bo He
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Guo
- Department of Radiology, Yushu People's Hospital, Qinghai, China
| | - Lei Wang
- Molecular Imaging Center, West China Hospital, Sichuan University, Chengdu, China
| | - Duojie Dingda
- Department of Radiology, Yushu People's Hospital, Qinghai, China
| | - Angwen Laji
- Department of Clinical Laboratory, Yushu People's Hospital, Yushu, China
| | - Chunhua Wang
- Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Radiation Oncology Key Laboratory of Sichuan Province, Chengdu, China
| | - Yonghai Zhang
- Department of Radiology, The Fifth People's Hospital of Qinghai Province, Xining, China
| | - Fabao Gao
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
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Sofia R, Melita V, De Vita A, Ruggiero A, Romano A, Attinà G, Birritella L, Lamendola P, Lombardo A, Lanza GA, Delogu AB. Cardiac Surveillance for Early Detection of Late Subclinical Cardiac Dysfunction in Childhood Cancer Survivors After Anthracycline Therapy. Front Oncol 2021; 11:624057. [PMID: 34055601 PMCID: PMC8162652 DOI: 10.3389/fonc.2021.624057] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/20/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND In childhood cancer survivors (CCSs) anthracycline-related cardiotoxicity is an important cause of morbidity and late mortality, but the optimal modality of cardiac surveillance still remains to be defined. The aim of this study was to assess whether non-invasive echocardiography-based functional cardiac measures can detect early subclinical myocardial changes in long-term pediatric cancer survivors who received anthracycline therapy. METHODS Twenty anthracycline-treated long-term CCSs and 20 age, sex, and body surface area matched healthy controls were enrolled in this study. Among cancer survivors, mean age at diagnosis was 6.5 ± 4.4 years, and the mean cumulative anthracycline dose was 234.5 ± 87.4 mg/m2. All subjects underwent a comprehensive functional echocardiographic protocol study including two-dimensional echocardiography (2D Echo), tissue Doppler imaging (TDI), speckle tracking (STE) and three-dimensional echocardiography (3D Echo). Patients were studied at a mean follow-up time of 6.5 ± 2.8 years from the end of therapy. RESULTS No significant differences in two-dimensional left ventricle ejection fraction (LVEF), diastolic parameters and speckle tracking (STE)-derived myocardial strain were observed between patients treated with anthracyclines and controls. Myocardial performance index was significantly prolonged (p = 0.005) and three-dimensional LVEF was significantly reduced (p = 0.002) in CCSs compared to controls, even though most values were within the normal range. There were no significant correlations between 2D, STE, and 3D echocardiographic parameters and age at diagnosis or duration of follow-up. No significant differences in echocardiographic parameters were found when stratifying cancer patients according to established risk factors for anthracycline cardiomyopathy. CONCLUSIONS This study found significantly reduced three-dimensional LVEF in CCSs compared with controls, despite no significant differences in two-dimensional LVEF and longitudinal strain values. These findings suggest that long-term CCSs who had received anthracycline therapy may be found to have subclinical features of myocardial dysfunction. However, further studies are needed to demonstrate the validity of new imaging techniques, including STE and 3D Echo, to identify patients at risk for cardiomyopathy in the long-term follow-up of CCSs.
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Affiliation(s)
- Rosaria Sofia
- Unit of Pediatrics, Pediatric Cardiology, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of The Sacred Heart, Rome, Italy
| | - Veronica Melita
- Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Antonio De Vita
- Catholic University of The Sacred Heart, Rome, Italy
- Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Antonio Ruggiero
- Catholic University of The Sacred Heart, Rome, Italy
- Pediatric Oncology Unit, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alberto Romano
- Catholic University of The Sacred Heart, Rome, Italy
- Pediatric Oncology Unit, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giorgio Attinà
- Catholic University of The Sacred Heart, Rome, Italy
- Pediatric Oncology Unit, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Lisa Birritella
- Unit of Pediatrics, Pediatric Cardiology, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of The Sacred Heart, Rome, Italy
| | - Priscilla Lamendola
- Catholic University of The Sacred Heart, Rome, Italy
- Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Antonella Lombardo
- Catholic University of The Sacred Heart, Rome, Italy
- Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Gaetano Antonio Lanza
- Catholic University of The Sacred Heart, Rome, Italy
- Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Angelica Bibiana Delogu
- Unit of Pediatrics, Pediatric Cardiology, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of The Sacred Heart, Rome, Italy
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14
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Martinez HR, Salloum R, Wright E, Bueche L, Khoury PR, Tretter JT, Ryan TD. Echocardiographic myocardial strain analysis describes subclinical cardiac dysfunction after craniospinal irradiation in pediatric and young adult patients with central nervous system tumors. CARDIO-ONCOLOGY (LONDON, ENGLAND) 2021; 7:5. [PMID: 33531084 PMCID: PMC7856804 DOI: 10.1186/s40959-021-00093-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 01/25/2021] [Indexed: 11/26/2022]
Abstract
Background Craniospinal irradiation (CSI) is part of the treatment of central nervous system (CNS) tumors and is associated with cardiovascular disease in adults. Global myocardial strain analysis including longitudinal peak systolic strain (GLS), circumferential peak systolic strain (GCS), and radial peak systolic strain (GRS) can reveal subclinical cardiac dysfunction. Methods Retrospective, single-center study in patients managed with CSI vs. age-matched controls. Clinical data and echocardiography, including myocardial strain analysis, were collected at early (< 12 months) and late (≥ 12 months) time points after completion of CSI. Results Echocardiograms were available at 20 early and 34 late time points. Patients at the late time point were older (21.7 ± 10.4 vs. 13.3 ± 9.6 years) and further out from CSI (13.1 ± 8.8 vs. 0.2 ± 0.3 years). Standard echocardiographic parameters were normal for both groups. For early, CSI vs. control: GLS was − 16.8 ± 3.6% vs. -21.3 ± 4.0% (p = 0.0002), GCS was − 22.5 ± 5.2% vs. -21.3 ± 3.4% (p = 0.28), and GRS was 21.8 ± 11.0% vs. 26.9 ± 7.7% (p = 0.07). For late, CSI vs. control: GLS was − 16.2 ± 5.4% vs. -21.6 ± 3.7% (p < 0.0001), GCS was − 20.9 ± 6.8% vs. -21.9 ± 3.5% (p = 0.42), and GRS was 22.5 ± 10.0% vs. 27.3 ± 8.3% (p = 0.03). Radiation type (proton vs. photon), and radiation dose (< 30 Gy vs. ≥ 30 Gy) did not impact any parameter, although numbers were small. Conclusions Subclinical cardiac systolic dysfunction by GLS is present both early and late after CSI. These results argue for future studies to determine baseline cardiovascular status and the need for early initiation of longitudinal follow-up post CSI.
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Affiliation(s)
- Hugo R Martinez
- Division of Cardiology, Department of Pediatrics, University of Cincinnati College of Medicine, and Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2003, Cincinnati, OH, 45229, USA.,Present address: Division of Pediatric Cardiology, Heart Institute, Le Bonheur Children's Hospital, University of Tennessee Health and Science Center, Memphis, TN, USA
| | - Ralph Salloum
- Division of Oncology, Department of Pediatrics, University of Cincinnati College of Medicine, and Cancer and Blood Disorders Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Present address: Division of Hematology/Oncology/Bone Marrow Transplant Nationwide Children's Hospital Columbus, Columbus, OH, USA
| | - Erin Wright
- Present address: Division of Pediatric Cardiology, Heart Institute, Le Bonheur Children's Hospital, University of Tennessee Health and Science Center, Memphis, TN, USA.,Present address: Division of Hematology and Oncology, Showers Family Center for Childhood Cancer and Blood Disorders, Akron Children's Hospital, Akron, OH, USA
| | - Lauren Bueche
- Division of Cardiology, Department of Pediatrics, University of Cincinnati College of Medicine, and Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2003, Cincinnati, OH, 45229, USA
| | - Philip R Khoury
- Division of Cardiology, Department of Pediatrics, University of Cincinnati College of Medicine, and Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2003, Cincinnati, OH, 45229, USA
| | - Justin T Tretter
- Division of Cardiology, Department of Pediatrics, University of Cincinnati College of Medicine, and Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2003, Cincinnati, OH, 45229, USA
| | - Thomas D Ryan
- Division of Cardiology, Department of Pediatrics, University of Cincinnati College of Medicine, and Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2003, Cincinnati, OH, 45229, USA.
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15
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Speckle Tracking Echocardiography in Pediatric Patients with Premature Ventricular Contractions. Pediatr Cardiol 2020; 41:1587-1593. [PMID: 32683524 DOI: 10.1007/s00246-020-02415-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/11/2020] [Indexed: 01/25/2023]
Abstract
Premature ventricular contractions (PVCs) in pediatric patients without structural heart disease and normal left ventricular systolic function rarely require therapy, though it is unknown whether these patients have subclinical cardiac dysfunction. Speckle tracking echocardiography is an additional means of evaluating cardiac function in asymptomatic pediatric PVC patients with normal standard measures of left ventricular (LV) function. Asymptomatic pediatric patients (< 21 years) without congenital heart disease, LV ejection fraction (LVEF) ≥ 55% and PVC burden ≥ 5% on 24-h Holter monitor were included. Demographic information, exercise stress test results, standard echocardiographic measures of LV systolic function and PVC morphology by 12-lead ECG were collected. Peak global systolic longitudinal strain (GLS) from apical four-chamber view was analyzed offline. 29 patients were identified (mean age 11.7 ± 5.8 years, 49.2 ± 25.3 kg, 59% male). Mean PVC burden was 12.0 ± 7.0% (range 5-37.5%). 14/29 (48%) had exercise stress testing with evidence of PVCs; 9/14 (64%) had PVC suppression at a mean heart rate (HR) of 160 ± 23 bpm and 5/14 (36%) did not suppress at a mean maximum HR of 188 ± 9 bpm. All patients had normal strain values by speckle tracking echocardiography (mean LV GLS - 22.5 ± 2.0%, LV global circumferential strain - 25.3 ± 3.9 and RV GLS - 24.1 ± 3.0%). There was no correlation between PVC burden and cardiac function parameters. Asymptomatic pediatric patients without structural heart disease, preserved LVEF/shortening fraction and PVC burden ≥ 5% demonstrated normal cardiac function including strain patterns indicating no evidence of subclinical cardiac dysfunction. Larger scale studies and longitudinal evaluation of left ventricular function using speckle tracking echocardiography is warranted in this population.
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