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Šileikienė R, Adamonytė K, Ziutelienė A, Ramanauskienė E, Vaškelytė JJ. Atrial and Ventricular Structural and Functional Alterations in Obese Children. ACTA ACUST UNITED AC 2021; 57:medicina57060562. [PMID: 34199362 PMCID: PMC8228452 DOI: 10.3390/medicina57060562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 12/02/2022]
Abstract
Background and objectives: Childhood obesity has reached epidemic levels in the world. Obesity in children is defined as a body mass index (BMI) equal to or above the 95th percentile for age and sex. The aim of this study was to determine early changes in cardiac structure and function in obese children by comparing them with their nonobese peers, using echocardiography methods. Materials and methods: The study enrolled 35 obese and 37 age-matched nonobese children. Standardized 2-dimensional (2D), pulsed wave tissue Doppler, and 2D speckle tracking echocardiography were performed. The z-score BMI and lipid metabolism were assessed in all children. Results: Obese children (aged 13.51 ± 2.15 years; 20 boys; BMI z-score of 0.88 ± 0.63) were characterized by enlarged ventricular and atrial volumes, a thicker left ventricular posterior wall, and increased left ventricular mass. Decreased LV and RV systolic and diastolic function was found in obese children. Atrial peak negative (contraction) strain (−2.05% ± 2.17% vs. −4.87% ± 2.97%, p < 0.001), LV and RV global longitudinal strain (−13.3% ± 2.88% vs. −16.87% ± 3.39%; −12.51% ± 10.09% vs. −21.51% ± 7.42%, p < 0.001), and LV global circumferential strain (−17.0 ± 2.7% vs. −19.5 ± 2.9%, p < 0.001) were reduced in obese children. LV torsion (17.94° ± 2.07° vs. 12.45° ± 3.94°, p < 0.001) and normalized torsion (2.49 ± 0.4°/cm vs. 1.86 ± 0.61°/cm, p = 0.001) were greater in obese than nonobese children. A significant inverse correlation was found between LV and RV global longitudinal strain and BMI (r = −0.526, p < 0.01; r = −0.434, p < 0.01) and total cholesterol (r = −0.417, p < 0.01). Multivariate analysis revealed that the BMI z-score was independently related to LV and RV global longitudinal strain as well as LV circumferential and radial strain. Conclusion: 2D speckle tracking echocardiography is beneficial in the early detection of regional LV systolic and diastolic dysfunctions, with preserved ejection fraction as well as additional RV and atrial involvement, in obese children. Obesity may negatively influence atrial and ventricular function, as measured by 2D speckle tracking echocardiography. Obese children, though they are apparently healthy, may have subclinical myocardial dysfunction.
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Affiliation(s)
- Rima Šileikienė
- Department of Pediatric Cardiology, Medical Academy, Lithuanian University of Health Sciences, Eivenių 2, LT 50009 Kaunas, Lithuania;
- Correspondence: ; Tel.: +370-686-85370 or +370-37-326272; Fax: +370-37-327160
| | - Karolina Adamonytė
- Department of Children Diseases, Medical Academy, Lithuanian University of Health Sciences, LT 47130 Kaunas, Lithuania; (K.A.); (E.R.)
| | - Aristida Ziutelienė
- Department of Pediatric Cardiology, Medical Academy, Lithuanian University of Health Sciences, Eivenių 2, LT 50009 Kaunas, Lithuania;
| | - Eglė Ramanauskienė
- Department of Children Diseases, Medical Academy, Lithuanian University of Health Sciences, LT 47130 Kaunas, Lithuania; (K.A.); (E.R.)
| | - Jolanta Justina Vaškelytė
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania;
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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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Adar A, Ghelani SJ, Sleeper LA, Lu M, Marcus E, Ferraro AM, Colan SD, Banka P, Powell AJ, Harrild DM. Normal Values for Left Ventricular Strain and Synchrony in Children Based on Speckle Tracking Echocardiography. Am J Cardiol 2019; 123:1546-1554. [PMID: 30857642 DOI: 10.1016/j.amjcard.2019.01.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 02/07/2023]
Abstract
Strain and synchrony are associated with clinical outcomes in children with heart diseases. Robust normative data for these values, measured by 2-dimensional speckle tracking echocardiography (2DSTE), are limited. Therefore, we aimed to derive normal ranges and z-scores of 2DSTE strain and synchrony parameters in children. Subjects were <21 years old with structurally and functionally normal hearts. High frame-rate 2-dimensional echocardiographic images were retrospectively analyzed to measure longitudinal (LS) and circumferential (CS) strain and synchrony; views used were apical 4, 2, and 3-chamber (AP 4, 2, 3) and mid-papillary short-axis (SAX-M). Synchrony measures included standard deviation of time to peak strain, maximal wall delay, and cross-correlation mean segmental delay; these were calculated without and with heart rate (HR) correction (divided by √RR). Z-score equations were created for AP4 and SAX-M strain components. n = 312 subjects (40% female) were included (age 3 days to 20.5 years). Mean strain values (%) were: AP4 -24.4 ± 3.2, AP2 -24.2 ± 3.3, AP3 -24.6 ± 3.4, SAX-M -25.8 ± 3.4. Significant differences between ages were present for all strain components (AP4 p < 0.001; AP2 p = 0.003; AP3 p = 0.014; SAX-M p = 0.01). LS components decreased with increasing age and body surface area (p < 0.001 for all); CS did not. Longitudinal, but not circumferential, synchrony parameters decreased with age; however, these were nonsignificant after HR correction. In conclusion, normal pediatric 2DSTE strain and synchrony parameters and z-scores are reported to provide a foundation for incorporation into clinical practice. LS decline with age whereas CS does not. Age-related decreases in LS synchrony were mostly nonsignificant when corrected for HR.
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Affiliation(s)
- Adi Adar
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Sunil J Ghelani
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Lynn A Sleeper
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Minmin Lu
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Edward Marcus
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Alessandra M Ferraro
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Steven D Colan
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Puja Banka
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrew J Powell
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - David M Harrild
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.
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Reference values for two-dimensional myocardial strain echocardiography of the left ventricle in healthy children. Cardiol Young 2019; 29:325-337. [PMID: 30777588 DOI: 10.1017/s1047951118002378] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Myocardial deformation by speckle tracking echocardiography provides additional information on left ventricular function. Values of myocardial deformation (strain and strain rate) depend on the type of ultrasound machine and software that is used. Normative values for QLAB (Philips) are scarce, especially for children. It is important to evaluate the influence of age and body size on myocardial deformation parameters, since anthropometrics strongly influence many standard echocardiographic parameters. The aim of this study was to provide comprehensive normal values for myocardial deformation of the left ventricle using a Philips platform and to evaluate the association with anthropometric and standard echocardiographic parameters. METHODS Healthy children between 1 and 18 years of age were prospectively examined using a standard echocardiographic protocol. Short-axis and apical four-chamber, two-chamber, and three-chamber views were used to measure peak systolic circumferential and longitudinal strain and systolic and early diastolic strain rate of the left ventricle using dedicated software. RESULTS A total of 103 children were included with a mean age of 10.8 and inter-quartile range 7.3-14.3 years. Global circumferential strain values (±SD) were -24.2±3.5% at basal, -25.8±3.5% at papillary muscle, and -31.9±6.2% at apex levels. Global left ventricular longitudinal strain values were -20.6±2.6% in apical four-chamber view, -20.9±2.7% in apical two-chamber, and -21.0 ±2.7% in apical three-chamber. Age was associated with longitudinal strain, longitudinal systolic and early diastolic strain rate, but not with circumferential strain. CONCLUSIONS Normal values for left ventricular deformation parameters in children are obtained using a Philips platform. Age partly explains normal variation of strain and strain rate.
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Cantinotti M, Scalese M, Giordano R, Franchi E, Assanta N, Marotta M, Viacava C, Molinaro S, Iervasi G, Santoro G, Koestenberger M. Normative Data for Left and Right Ventricular Systolic Strain in Healthy Caucasian Italian Children by Two-Dimensional Speckle-Tracking Echocardiography. J Am Soc Echocardiogr 2018. [PMID: 29526564 DOI: 10.1016/j.echo.2018.01.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND There is an increasing interest in echocardiographic strain (ε) measurements for the assessment of ventricular myocardial function in children; however, pediatric nomograms remain limited. Our aim was to establish pediatric nomograms for the left ventricular (LV) and the right ventricular (RV) ε measured by two-dimensional speckle-tracking echocardiography (2D-STE) in a large cohort of healthy children prospectively enrolled. METHODS Echocardiographic measurements included STE LV longitudinal and circumferential and RV longitudinal global end-systolic ε. Age, weight, height, heart rate (HR), and body surface area (BSA) were used as independent variables in different analyses to predict the mean values of each measurement. Echocardiograms were performed by Philips-iE33 systems (Philips, Bothell, WA) and offline measurements on Philips-Q-Lab-9. RESULTS In all, 721 subjects (age 31 days to 17 years; 48% female) were studied. Low coefficients of determination (R2) were noted among all of the ε parameters evaluated and adjusted for age, weight, height, BSA, and HR (i.e., R2 all ≤ 0.10; range, 0.01-0.088). This hampered the possibility of performing z-scores with a sufficient reliability. Thus, we are limited to presenting data as mean values (±SD) stratified for age groups and divided by gender. LV longitudinal ε values decreased with age (P < .001), while no significant age-related variations were noted for RV longitudinal ε. A significant base-to-apex (lowest to highest) gradient in circumferential LV ε values was noted at all ages (P < .001). CONCLUSIONS We report pediatric echocardiographic normative data for 2D-STE for the LV and RV ε by using vendor-specific software. Our results confirm previous observations, showing only little variations of strain parameters with age and gender.
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Affiliation(s)
| | | | - Raffaele Giordano
- Adult and Pediatric Cardiac Surgery, Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy.
| | | | | | | | | | | | | | | | - Martin Koestenberger
- Division of Pediatric Cardiology, Department of Pediatrics, Medical University Graz, Graz, Austria
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Sex- and Age-Related Reference Values in Cardiology, with Annotations and Guidelines for Interpretation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1065:677-706. [PMID: 30051414 DOI: 10.1007/978-3-319-77932-4_41] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The definition of "abnormal" in clinical sciences is often based on so-called reference values which point to a range that experts by some sort of consensus consider as normal when looking at biological variables. Such a level is commonly calculated by taking (twice) the standard deviation from the mean, or considering certain percentiles. The suspicion or even confirmation of a disease is then established by demonstrating that the value measured exceeds the upper or lower reference value. As is often the case, the measurement accuracy may depend on the conditions and specific method employed to collect and analyze data. This implies that, for example, data assessed by 2D echocardiography possibly differ from those obtained by MRI and therefore require modality-specific reference values. In this review we summarize reference values for the electrocardiogram, cardiac compartmental volumes, and arterial vessel size in males and females for various age groups. These values may further depend on other variables such as body size, physical training status, and ethnicity. Additional variables relevant for cardiology such as those referring to the microcirculation and biomarkers are only mentioned with reference to the pertinent literature. In general, the sex- and age-specific differences observed are often remarkable and warrant consideration in clinical practice and basic biomedical sciences.
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Dallaire F, Sarkola T. Growth of Cardiovascular Structures from the Fetus to the Young Adult. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1065:347-360. [PMID: 30051395 DOI: 10.1007/978-3-319-77932-4_22] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The size, hemodynamics, and function of cardiovascular structures change dramatically from the early fetal life to late adolescence. The principal determinants of cardiovascular dimensions are related to the blood flow needed to meet metabolic demands. This demand is in turn tightly related to body size and body composition, keeping in mind that various tissues may have different metabolic rates. There is no simple model that links cardiac dimensions with a single body size measurement. Consequently, despite abundant scientific literature, few studies have proposed pediatric reference values that efficiently and completely account for the effect of body size. Other factors influence cardiovascular size and function in children, including sex. The influence of sex is multifactorial and not fully understood, but differences in body size and body composition play an important role. We will first review the determinants of cardiovascular size and function in children. We then explore the evaluation and normalization of cardiovascular size and function in pediatric cardiology in relation to the growth of cardiovascular structures during childhood, with a particular focus on sex differences.
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Affiliation(s)
| | - Taisto Sarkola
- University of Helsinki, the Helsinki University Central Hospital/Children's Hospital, Helsinki, Finland
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Cantinotti M, Giordano R, Paterni M, Saura D, Scalese M, Franchi E, Assanta N, Koestenberg M, Dulgheru R, Sugimoto T, Bernard A, Caballero L, Lancellotti P. Adult echocardiographic nomograms: overview, critical review and creation of a software for automatic, fast and easy calculation of normal values. J Thorac Dis 2017; 9:5404-5422. [PMID: 29312752 PMCID: PMC5757044 DOI: 10.21037/jtd.2017.11.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 10/27/2017] [Indexed: 01/15/2023]
Abstract
There is a crescent interest on normal adult echocardiographic values and the introduction of new deformation imaging and 3D parameters pose the issue of normative data. A multitude of nomograms has been recently published, however data are often fragmentary, difficult to find, and their strengths/limitations have been never evaluated. AIMS (I) to provide a review of current echocardiographic nomograms; (II) to generate a tool for easy and fast access to these data. A literature search was conducted accessing the National Library of Medicine using the keywords: 2D/3D echocardiography, strain, left/right ventricle, atrial, mitral/tricuspid valve, aorta, reference values/nomograms/normal values. Adding the following keywords, the results were further refined: range/intervals, myocardial velocity, strain rate and speckle tracking. Forty one published studies were included. Our study reveals that for several of 2D/3D parameters sufficient normative data exist, however, a few limitations still persist. For some basic parameters (i.e., mitral/tricuspid/pulmonary valves, great vessels) and for 3D valves data are scarce. There is a lack of studies evaluating ethnic differences. Data have been generally expressed as mean values normalised for gender and age instead of computing models incorporating different variables (age/gender/body sizes) to calculate z scores. To summarize results a software (Echocardio-Normal Values) who automatically calculate range of normality for a broad range of echocardiographic measurements according to age/gender/weight/height, has been generated. We provide an up-to-date and critical review of strengths/limitation of current adult echocardiographic nomograms. Furthermore we generated a software for automatic, easy and fast access to multiple echocardiographic normative data.
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Affiliation(s)
- Massimiliano Cantinotti
- Fondazione G. Monasterio CNR-Regione Toscana, Massa and Pisa, Italy
- Institute of Clinical Physiology, Pisa, Italy
| | - Raffaele Giordano
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | | | - Daniel Saura
- Hospital Clínico Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain
| | | | - Eliana Franchi
- Fondazione G. Monasterio CNR-Regione Toscana, Massa and Pisa, Italy
| | - Nadia Assanta
- Fondazione G. Monasterio CNR-Regione Toscana, Massa and Pisa, Italy
| | - Martin Koestenberg
- Division of Pediatric Cardiology, Department of Pediatrics, Medical University Graz, Graz, Austria
| | - Raluca Dulgheru
- University of Liège hospital, GIGA Cardiovascular Science, Heart Valve Clinic, Imaging Cardiology, Liège, Belgium
| | - Tadafumi Sugimoto
- Department of University Cardiology, University of Milano School of Medicine, I.R.C.C.S. Policlinico San Donato, San Donato Milanese, Milan, Italy
| | - Anne Bernard
- CHU Tours, France et Université de Tours, Tours, France
| | - Luis Caballero
- Hospital Clínico Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain
| | - Patrizio Lancellotti
- Department of Cardiology, Cardio-Oncology Clinic, University of Liège Hospital, GIGA Cardiovascular Sciences, CHU Sart Tilman, Liège, Belgium
- Gruppo Villa Maria Care and Research, Anthea Hospital, Bari, Italy
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Differences in myocardial strain between pectus excavatum patients and healthy subjects assessed by cardiac MRI: a pilot study. Eur Radiol 2017; 28:1276-1284. [DOI: 10.1007/s00330-017-5042-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/14/2017] [Accepted: 08/18/2017] [Indexed: 12/12/2022]
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Shang Q, Patel S, Steinmetz M, Schuster A, Danford DA, Beerbaum P, Sarikouch S, Kutty S. Myocardial deformation assessed by longitudinal strain: Chamber specific normative data for CMR-feature tracking from the German competence network for congenital heart defects. Eur Radiol 2017; 28:1257-1266. [PMID: 28875228 DOI: 10.1007/s00330-017-5034-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 08/09/2017] [Accepted: 08/14/2017] [Indexed: 01/12/2023]
Abstract
PURPOSE Left ventricular two-dimensional global longitudinal strain (LS) is superior to ejection fraction (EF) as predictor of outcome. We provide reference data for atrial and ventricular global LS during childhood and adolescence by CMR feature tracking (FT). METHODS We prospectively enrolled 115 healthy subjects (56 male, mean age 12.4 ± 4.1 years) at a single institution. CMR consisted of standard two-dimensional steady-state free-precession acquisitions. CMR-FT was performed on ventricular horizontal long-axis images for derivation of right and left atrial (RA, LA) and right and left ventricular (RV, LV) peak global LS. End-diastolic volumes (EDVs) and EF were measured. Correlations were explored for LS with age, EDV and EF of each chamber. RESULTS Mean±SD of LS (%) for RA, RV, LA and LV were 26.56±10.2, -17.96±5.4, 26.45±10.6 and -17.47±5, respectively. There was a positive correlation of LS in LA, LV, RA and RV with corresponding EF (all P<0.05); correlations with age were weak. Gender-wise differences were not significant for atrial and ventricular LS, strain rate and displacement. Inter- and intra-observer comparisons showed moderate agreements. CONCLUSIONS Chamber-specific nomograms for paediatric atrial and ventricular LS are provided to serve as clinical reference, and to facilitate CMR-based deformation research. KEY POINTS • No normative data exist for CMR-derived global longitudinal strain in the young. • This prospective study provides reference data for atrial and ventricular longitudinal strain. • The data will serve as reference for CMR-based clinical and research use.
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Affiliation(s)
- Quanliang Shang
- Division of Pediatric Cardiology, University of Nebraska College of Medicine, Children's Hospital and Medical Center, Omaha, NE, USA
- Department of Radiology, Second Xiangya Hospital, Central South University , Changsha, Hunan Province, China
| | - Shivani Patel
- Division of Pediatric Cardiology, University of Nebraska College of Medicine, Children's Hospital and Medical Center, Omaha, NE, USA
| | - Michael Steinmetz
- Department of Paediatric Cardiology, Georg-August-University and German Centre for Cardiovascular Research (DZHK, Partner Site), Göttingen, Germany
| | - Andreas Schuster
- Department of Cardiology and Pulmonology, Georg-August-University and German Centre for Cardiovascular Research (DZHK, Partner Site), Göttingen, Germany
| | - David A Danford
- Division of Pediatric Cardiology, University of Nebraska College of Medicine, Children's Hospital and Medical Center, Omaha, NE, USA
| | | | | | - Shelby Kutty
- Division of Pediatric Cardiology, University of Nebraska College of Medicine, Children's Hospital and Medical Center, Omaha, NE, USA.
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Strain Rate in Children and Young Piglets Mirrors Changes in Contractility and Demonstrates a Force-Frequency Relationship. J Am Soc Echocardiogr 2017; 30:797-806. [DOI: 10.1016/j.echo.2017.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 11/18/2022]
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12
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Cantinotti M, Giordano R, Emdin M, Assanta N, Crocetti M, Marotta M, Iervasi G, Lopez L, Kutty S. Echocardiographic assessment of pediatric semilunar valve disease. Echocardiography 2017; 34:1360-1370. [DOI: 10.1111/echo.13527] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Massimiliano Cantinotti
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
- Institute of Clinical Physiology; Pisa Italy
| | | | - Michele Emdin
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
| | - Nadia Assanta
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
| | - Maura Crocetti
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
| | - Marco Marotta
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
| | - Giorgio Iervasi
- Foundation G. Monasterio CNR-Regione Toscana; Massa Pisa Italy
- Institute of Clinical Physiology; Pisa Italy
| | - Leo Lopez
- Miami Children's Hospital; Miami FL USA
| | - Shelby Kutty
- University of Nebraska Medical Center; Children's Hospital and Medical Center; Omaha NE USA
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Left Ventricular Function in Healthy Term Neonates During the Transitional Period. J Pediatr 2017; 182:197-203.e2. [PMID: 27908646 DOI: 10.1016/j.jpeds.2016.11.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/26/2016] [Accepted: 11/01/2016] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To evaluate whether incorporating conventional, tissue Doppler imaging and speckle tracking echocardiography are reliable and can characterize changes in left ventricular (LV) function properly in healthy neonates in the early transitional newborn period. STUDY DESIGN A prospective observational study was conducted in 50 healthy term neonates with a mean ± SD gestational age and birth weight of 39.3 ± 1.2 weeks and 3.5 ± 0.44 kg, respectively. All infants underwent serial echocardiograms at 15 ± 2 (day 1) and 35 ± 2 hours (day 2) of age. The LV dimensions and various functional indices including tissue Doppler imaging velocities and speckle tracking echocardiography-derived peak longitudinal strain, and systolic and diastolic strain rate were acquired and compared between time points. RESULTS All measurements were feasible from each scan except speckle tracking echocardiography in 10% and 20% of images on days 1 and 2 of age, respectively. LV dimensions, but not functional measures, demonstrated a small to moderate positive correlation with birth weight. On day 2, a small reduction was observed in LV basal diameter, mitral valve inflow velocity time integral, and systolic velocity of the lateral wall and septum. Other indices remained unchanged. Tissue Doppler imaging-derived functional and flow-derived hemodynamic measures demonstrated the least measurement bias, and strain measurements demonstrated better reliability than strain rate, fractional shortening, and ejection fraction. CONCLUSION The relative reliability of various echocardiographic indices to quantify LV function in neonates establish a normative dataset and provide evidence for their validity during the first 2 days of life.
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Ari ME, Ekici F, Çetin İİ, Tavil EB, Yaralı N, Işık P, Hazırolan T, Tunç B. Assessment of left ventricular functions and myocardial iron load with tissue Doppler and speckle tracking echocardiography and T2* MRI in patients with β-thalassemia major. Echocardiography 2017; 34:383-389. [DOI: 10.1111/echo.13463] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Mehmet Emre Ari
- Department of Pediatric Cardiology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
| | - Filiz Ekici
- Department of Pediatric Cardiology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
| | - İbrahim İlker Çetin
- Department of Pediatric Cardiology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
| | - Emine Betül Tavil
- Department of Pediatric Hematology; Hacettepe University Faculty of Medicine; Ankara Turkey
| | - Neşe Yaralı
- Department of Pediatric Hematology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
| | - Pamir Işık
- Department of Pediatric Hematology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
| | - Tuncay Hazırolan
- Department of Radiology; Hacettepe University Faculty of Medicine; Ankara Turkey
| | - Bahattin Tunç
- Department of Pediatric Hematology; Ankara Children's Hematology and Oncology Research and Training Hospital; Ankara Turkey
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15
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Regression equations of Z score and echocardiographic nomograms for coronary sinus in healthy children. Int J Cardiovasc Imaging 2016; 32:1687-1695. [PMID: 27539730 DOI: 10.1007/s10554-016-0960-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/08/2016] [Indexed: 12/11/2022]
Abstract
As the number of implanted biventricular pacemakers increases, the coronary sinus (CS) has evoked much interest amongst cardiologists. A dilated CS could prompt the existence of many diseases. The normal CS diameter is uncertain, especially in children. A total of 446 Chinese healthy children were prospectively enrolled in this study. The superior and inferior diameter of the CS was measured from the CS ostium 1 cm from the end of ventricular systole in the modified apical 4-chamber view. Seven models were tested to determine the relationships between parameters of body size and CS diameter. Heteroscedasticity was tested by the White and Breusch-Pagan tests. A multiple linear regression model should be gender as a covariate along with BSAStevenson, in order to evaluate the influence of gender on the measurements. The formula of Stevenson was best-fit. The predicted values and Z-score boundaries for measurement of the CS diameter were calculated. Bland-Altman plot regression showed that the 95 % limits of agreement for inter- and intra-observer measurements were not significantly different. We report new, reliable echocardiographic Z scores for the CS diameter derived from a large population of healthy Chinese children. The Z scores can be used in echocardiographic examinations.
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16
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Levy PT, Singh GK. Author’s Reply. J Am Soc Echocardiogr 2016; 29:568-9. [DOI: 10.1016/j.echo.2016.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Indexed: 10/21/2022]
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17
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Cantinotti M, Assanta N, Crocetti M, Spadoni I, Iervasi G. Challenges in Interpreting Pediatric Normative Left Ventricular Strain Data and the Quest for Comprehensive Deformation Nomograms. J Am Soc Echocardiogr 2016; 29:567-8. [DOI: 10.1016/j.echo.2016.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 01/23/2023]
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18
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Dallaire F, Slorach C, Bradley T, Hui W, Sarkola T, Friedberg MK, Jaeggi E, Dragulescu A, Mahmud FH, Daneman D, Mertens L. Pediatric Reference Values and Z Score Equations for Left Ventricular Systolic Strain Measured by Two-Dimensional Speckle-Tracking Echocardiography. J Am Soc Echocardiogr 2016; 29:786-793.e8. [PMID: 27185223 DOI: 10.1016/j.echo.2016.03.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND In pediatric echocardiography, myocardial strain measurements are likely influenced by cardiac size and growth in healthy children. The application of this technique in clinical practice has been hampered by the lack of good normal reference values for the pediatric population. The aim of this study was to determine reference values and Z score equations for left ventricular systolic circumferential and longitudinal strain in a healthy pediatric population. METHODS Two hundred thirty-three healthy subjects 1 to 18 years of age were prospectively recruited. Left ventricular systolic longitudinal and circumferential strain measurements were recorded using two-dimensional speckle-tracking. Normalization for body size was performed using parametric nonlinear regression modeling. Several analyses were performed to detect potential residual associations with body size, residual heteroscedasticity, or departure from an adequate Z score distribution. RESULTS There were weak but statistically significant nonlinear associations between body size and most strain values. Body surface area was superior to adjust for body size compared with age, height, and weight. Most strain values displayed a second-order polynomial relationship with body surface area. Z score equations were computed with adequate normal distributions and without residual associations in relation to BSA for most strain parameters. CONCLUSIONS There was a weak but significant influence of body size on most left ventricular circumferential and longitudinal systolic strain parameters used in pediatric echocardiography. Z scores are presented for strain measurements normalized to body surface area and adjusted for heteroscedasticity. The use of these normalized values may reduce the risk for misclassification caused by normal variation in myocardial strain values during growth.
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Affiliation(s)
- Frederic Dallaire
- Division of Pediatric Cardiology, Faculty of Medicine, University of Sherbrooke, and Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Quebec, Canada.
| | - Cameron Slorach
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Timothy Bradley
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Wei Hui
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Taisto Sarkola
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Mark K Friedberg
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Edgar Jaeggi
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Andreea Dragulescu
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Farid H Mahmud
- Division of Endocrinology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Denis Daneman
- Division of Endocrinology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Luc Mertens
- The Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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19
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Cardiac Function After the Immediate Transitional Period in Very Preterm Infants Using Speckle Tracking Analysis. Pediatr Cardiol 2016; 37:295-303. [PMID: 26472651 DOI: 10.1007/s00246-015-1277-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND The postnatal period in preterm infants involves multiple physiologic changes starting directly after birth and continuing for days or weeks. To recognize and treat compromise, it is important to measure cardiovascular function. We used a novel technique (speckle tracking echocardiography, STE) to measure cardiac function in this period. METHODS We obtained cardiac ultrasound images at day 3, 7, 14, 21 and 28 in preterm infants <30-week gestation. Conventional measures included cardiac size, left ventricular stroke volume, atrial volume and the patent ductus arteriosus (PDA). Four chamber images were analyzed with STE, which provided parameters of left ventricular volume, longitudinal deformation and myocardial velocities. RESULTS Images of 54 infants (gestational age 23-29 weeks) were analyzed. STE-derived stroke volume correlated well with conventional echocardiography-derived stroke volume, but agreement was suboptimal. Most STE parameters showed good reliability. All volume parameters and systolic and atrial velocities increased over time. Cardiac deformation and early diastolic velocity did not change. A PDA was associated with 33 % increased stroke volume at day 3 up to 98 % at day 28 with a spherically enlarged heart and increased filling pressure. CONCLUSION Speckle tracking echocardiography analysis is a feasible and reliable technique that can simultaneously obtain systolic and diastolic volumes, longitudinal deformation and myocardial velocities from one ultrasound window. Preterm hearts maintain cardiac function well during the first weeks of life, even with increased preload as a consequence of a PDA.
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20
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Breatnach CR, Levy PT, James AT, Franklin O, El-Khuffash A. Novel Echocardiography Methods in the Functional Assessment of the Newborn Heart. Neonatology 2016; 110:248-260. [PMID: 27287615 DOI: 10.1159/000445779] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 03/24/2016] [Indexed: 11/19/2022]
Abstract
Echocardiography in the neonatal intensive care unit has led to improvements in our ability to assess the neonatal heart in health and disease. Advances in neonatal cardiac imaging have provided the capability to obtain quantitative information that often supersedes the qualitative information provided by conventional methods. Novel quantitative measures of function include the assessment of the velocity of muscle tissue movement during systole and diastole using tissue Doppler velocity imaging, and evaluation of deformation and rotational characteristics of the myocardium utilizing speckle tracking echocardiography or tissue Doppler-derived strain imaging. A comprehensive understanding of these novel functional modalities, their predictive value, and limitations can greatly assist in managing both the normal and maladaptive responses in the newborn period. This article discusses the novel and emerging methods for assessment of left and right heart function in the neonatal population.
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Affiliation(s)
- Colm R Breatnach
- Department of Neonatology, The Rotunda Hospital, Dublin, Ireland
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21
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Levy PT, Machefsky A, Sanchez AA, Patel MD, Rogal S, Fowler S, Yaeger L, Hardi A, Holland MR, Hamvas A, Singh GK. Reference Ranges of Left Ventricular Strain Measures by Two-Dimensional Speckle-Tracking Echocardiography in Children: A Systematic Review and Meta-Analysis. J Am Soc Echocardiogr 2015; 29:209-225.e6. [PMID: 26747685 DOI: 10.1016/j.echo.2015.11.016] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND Establishment of the range of reference values and associated variations of two-dimensional speckle-tracking echocardiography (2DSTE)-derived left ventricular (LV) strain is a prerequisite for its routine clinical adoption in pediatrics. The aims of this study were to perform a meta-analysis of normal ranges of LV global longitudinal strain (GLS), global circumferential strain (GCS), and global radial strain (GRS) measurements derived by 2DSTE in children and to identify confounding factors that may contribute to variance in reported measures. METHODS A systematic review was launched in MEDLINE, Embase, Scopus, the Cumulative Index to Nursing and Allied Health Literature, and the Cochrane Library. Search hedges were created to cover the concepts of pediatrics, STE, and left-heart ventricle. Two investigators independently identified and included studies if they reported 2DSTE-derived LV GLS, GCS, or GRS. The weighted mean was estimated by using random effects models with 95% CIs, heterogeneity was assessed using the Cochran Q statistic and the inconsistency index (I(2)), and publication bias was evaluated using the Egger test. Effects of demographic (age), clinical, and vendor variables were assessed in a metaregression. RESULTS The search identified 2,325 children from 43 data sets. The reported normal mean values of GLS among the studies varied from -16.7% to -23.6% (mean, -20.2%; 95% CI, -19.5% to -20.8%), GCS varied from -12.9% to -31.4% (mean, -22.3%; 95% CI, -19.9% to -24.6%), and GRS varied from 33.9% to 54.5% (mean, 45.2%; 95% CI, 38.3% to 51.7%). Twenty-six studies reported longitudinal strain only from the apical four-chamber view, with a mean of -20.4% (95% CI, -19.8% to -21.7%). Twenty-three studies reported circumferential strain (mean, -20.3%; 95% CI, -19.4% to -21.2%) and radial strain (mean, 46.7%; 95% CI, 42.3% to 51.1%) from the short-axis view at the midventricular level. A significant apex-to-base segmental longitudinal strain gradient (P < .01) was observed in the LV free wall. There was significant between-study heterogeneity and inconsistency (I(2) > 94% and P < .001 for each strain measure), which was not explained by age, gender, body surface area, blood pressure, heart rate, frame rate, frame rate/heart rate ratio, tissue-tracking methodology, location of reported strain value along the strain curve, ultrasound equipment, or software. The metaregression showed that these effects were not significant determinants of variations among normal ranges of strain values. There was no evidence of publication bias (P = .40). CONCLUSIONS This study defines reference values of 2DSTE-derived LV strain in children on the basis of a meta-analysis. In healthy children, mean LV GLS was -20.2% (95% CI, -19.5% to -20.8%), mean GCS was -22.3% (95% CI, -19.9% to -24.6%), and mean GRS was 45.2% (95% CI, 38.3% to 51.7%). LV segmental longitudinal strain has a stable apex-to-base gradient that is preserved throughout maturation. Although variations among different reference ranges in this meta-analysis were not dependent on differences in demographic, clinical, or vendor parameters, age- and vendor-specific referenced ranges were established as well.
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Affiliation(s)
- Philip T Levy
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri; Department of Pediatrics, Goryeb Children's Hospital, Morristown, New Jersey.
| | - Aliza Machefsky
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Aura A Sanchez
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Meghna D Patel
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Sarah Rogal
- Department of Pediatrics, Goryeb Children's Hospital, Morristown, New Jersey
| | - Susan Fowler
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Lauren Yaeger
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Angela Hardi
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Mark R Holland
- Department of Radiology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana
| | - Aaron Hamvas
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Gautam K Singh
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
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Cantinotti M, Giordano R, Scalese M, Murzi B, Assanta N, Spadoni I, Crocetti M, Marotta M, Molinaro S, Kutty S, Iervasi G. Nomograms for mitral inflow Doppler and tissue Doppler velocities in Caucasian children. J Cardiol 2015; 68:288-99. [PMID: 26564714 DOI: 10.1016/j.jjcc.2015.10.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 08/23/2015] [Accepted: 09/15/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Pediatric echocardiographic nomograms for systolic/diastolic functional indices are limited by small sample size and inconsistent methodologies. Our aim was to establish pediatric nomograms for mitral valve (MV) pulsed wave Doppler (PWD) and tissue Doppler imaging (TDI) velocities. METHODS We performed PWD/TDI measurements of MV velocities and generated models testing for linear/logarithmic/exponential/square root relationships. Heteroscedasticity was accounted for by White test or Breusch-Pagan test. Age, weight, height, heart rate (HR), and body surface area (BSA) were used as independent variables in different analyses to predict the mean values of each measurement. RESULTS In all, 904 Caucasian Italian healthy children (age 0 days-17 years; 45.5% females; BSA 0.12-2.12m(2)) were prospectively studied. No individual variable provided equations with an acceptable coefficient of determination (R(2)) and even the inclusion of multiple variables in the model resulted in only a partial amelioration of the R(2). Higher R(2) were obtained for PWD-E deceleration time (0.53), septal (Se') and lateral (Le') MV-TDI e' velocity (Se': 0.54; Le': 0.55). Variability was higher at lower age and BSA. In older children patterns were more reproducible; however, the exclusion of neonates did not substantially improve the final models. The low R(2) hampered building of z-scores and calculation of estimated percentiles. Thus normative data have been presented as observed percentile according to age for all measurements. CONCLUSIONS We report normal ranges for PWD and TDI mitral velocities derived from a large population of Caucasian children. Variability of diastolic patterns especially at lower ages needs to be taken into account.
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Affiliation(s)
| | | | | | - Bruno Murzi
- Tuscany Foundation "G. Monasterio", Massa and Pisa, Italy
| | - Nadia Assanta
- Tuscany Foundation "G. Monasterio", Massa and Pisa, Italy
| | | | - Maura Crocetti
- Tuscany Foundation "G. Monasterio", Massa and Pisa, Italy
| | - Marco Marotta
- Tuscany Foundation "G. Monasterio", Massa and Pisa, Italy
| | | | - Shelby Kutty
- University of Nebraska Medical Center/Children's Hospital and Medical Center, Omaha, NE, USA
| | - Giorgio Iervasi
- Tuscany Foundation "G. Monasterio", Massa and Pisa, Italy; Institute of Clinical Physiology, Pisa, Italy
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23
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Jashari H, Rydberg A, Ibrahimi P, Bajraktari G, Kryeziu L, Jashari F, Henein MY. Normal ranges of left ventricular strain in children: a meta-analysis. Cardiovasc Ultrasound 2015; 13:37. [PMID: 26250696 PMCID: PMC4528396 DOI: 10.1186/s12947-015-0029-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/20/2015] [Indexed: 02/08/2023] Open
Abstract
AIMS The definition of normal values of two-dimensional speckle-tracking echocardiography derived left ventricular (LV) deformation parameters, is of critical importance for the routine application of this modality in children. The objectives of this study were to perform a meta-analysis of normal ranges for longitudinal, circumferential and radial strain/strain rate values and to identify confounders that may contribute to differences in reported measures. METHODS AND RESULTS A systematic search was conducted. Studies describing normal healthy subjects and observational studies that used control groups as a comparison were included. Data were combined using a random-effect model. Effects of demographic, clinical and equipment variables were assessed through meta-regression. The search identified 1,192 subjects form 28 articles. Longitudinal strain (LS) normal mean values varied from -12.9 to -26.5 (mean, -20.5; 95% CI, -20.0 to -21.0). Normal mean values of circumferential strain (CS) varied from -10.5 to -27.0 (mean, -22.06; 95% CI, -21.5 to -22.5). Radial strain (RS) normal mean values varied from 24.9 to 62.1 (mean, 45.4; 95% CI, 43.0 to 47.8). Meta-regression showed LV end diastolic diameter as a significant determinant of variation for LS. Longitudinal systolic strain rate (LSRs) was significantly determined by the age and RS by the type of vendor used. CONCLUSION Variations among different normal ranges were dependent on the vendor used, LV end-diastolic diameter and age. Vendor-independent software for analyzing myocardial deformation in children, using images from different vendors would be the ideal solution for strain measurements or else using the same system for patient's follow up.
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Affiliation(s)
- Haki Jashari
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Pranvera Ibrahimi
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Gani Bajraktari
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Lindita Kryeziu
- Department of Neonatology, Gynecology Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo
| | - Fisnik Jashari
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Michael Y Henein
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
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