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1.
Sensors (Basel) ; 22(3)2022 Jan 27.
Artigo em Inglês | MEDLINE | ID: mdl-35161728

RESUMO

The use of imaging devices to assess directional mechanics of tissues is highly desirable. This is because the directional mechanics depend on fiber orientation, and altered directional mechanics are closely related to the pathological status of tissues. However, measuring directional mechanics in tissues with high-stiffness is challenging due to the difficulty of generating localized displacement in these tissues using acoustic radiation force, a general method for generating displacement in ultrasound-based elastography. In addition, common ultrasound probes do not provide rotational function, which makes the measurement of directional mechanics inaccurate and unreliable. Therefore, we developed a high-frequency ultrasound mechanical wave elastography system that can accommodate a wide range of tissue stiffness and is also equipped with a motorized rotation stage for precise imaging of directional mechanics. A mechanical shaker was applied to the elastography system to measure tissues with high-stiffness. Phantom and ex vivo experiments were performed. In the phantom experiments, the lateral and axial resolution of the system were determined to be 144 µm and 168 µm, respectively. In the ex vivo experiments, we used swine heart and cartilage, both of which are considered stiff. The elastography system allows us to acquire the directional mechanics with high angular resolution in the heart and cartilage. The results demonstrate that the developed elastography system is capable of imaging a wide range of tissues and has high angular resolution. Therefore, this system might be useful for the diagnostics of mechanically anisotropic tissues via ex vivo tests.


Assuntos
Técnicas de Imagem por Elasticidade , Animais , Anisotropia , Fenômenos Mecânicos , Imagens de Fantasmas , Suínos , Ultrassonografia
2.
Clin Exp Pediatr ; 64(11): 582-587, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33705633

RESUMO

BACKGROUND: Syncope is a common problem in children and adolescents. However, a large proportion of syncope cases have no underlying cause. PURPOSE: This study aimed to identify the factors affecting the severity of syncope using tissue Doppler imaging (TDI). METHODS: This retrospective study included 61 children and adolescents with syncope who underwent echocardiography. The head-up-tilt test (HUT) was performed when there was a more severe syncopal event. We compared the echocardiographic findings between the execute HUT and nonexecute HUT, negative HUT result and positive HUT result, and normal electrocardiogram (ECG) and abnormal ECG groups. Data were analyzed using an unpaired t test post hoc analysis. RESULTS: In the execute and nonexecute HUT groups, the odds ratios were 0.55 for medial E/E' (P=0.040) and 0.64 for lateral E/E' (P=0.049). Comparison of the results of the decreased, normal, and increased groups for lateral E/E' revealed a significant difference in the execution HUT and nonexecute HUT groups (overall, P=0.004; decreased vs. increased, P= 0.003; normal vs. increased, P=0.050). CONCLUSION: Medial E/E' and lateral E/E' were decreased in patients with severe syncopal events. These findings suggest that the presence of left ventricular diastolic deterioration may cause hypoperfusion even in the absence of organic causes and, consequently, increase syncope severity and frequency. The TDI measured by echocardiography can be used as an index to predict syncope recurrence and/or severity.

4.
Emerg Infect Dis ; 27(4): 1196-1200, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33539720

RESUMO

A concerning development during the coronavirus disease pandemic has been multisystem inflammatory syndrome in children. Reports of this condition in East Asia have been limited. In South Korea, 3 cases were reported to the national surveillance system for multisystem inflammatory syndrome in children. All case-patients were hospitalized and survived with no major disease sequelae.


Assuntos
COVID-19 , Diarreia , Derrame Pleural , SARS-CoV-2 , Síndrome de Resposta Inflamatória Sistêmica , Adolescente , COVID-19/sangue , COVID-19/complicações , COVID-19/diagnóstico , COVID-19/epidemiologia , COVID-19/fisiopatologia , COVID-19/terapia , Criança , Diagnóstico Diferencial , Diarreia/diagnóstico , Diarreia/virologia , Exantema/diagnóstico , Exantema/etiologia , Feminino , Hospitalização , Humanos , Leucocitose/diagnóstico , Leucocitose/etiologia , Masculino , Insuficiência da Valva Mitral/diagnóstico , Insuficiência da Valva Mitral/etiologia , Derrame Pleural/diagnóstico , Derrame Pleural/etiologia , República da Coreia/epidemiologia , SARS-CoV-2/isolamento & purificação , SARS-CoV-2/patogenicidade , Síndrome de Resposta Inflamatória Sistêmica/sangue , Síndrome de Resposta Inflamatória Sistêmica/diagnóstico , Síndrome de Resposta Inflamatória Sistêmica/fisiopatologia , Síndrome de Resposta Inflamatória Sistêmica/terapia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento , Ultrassonografia/métodos , Disfunção Ventricular Esquerda/diagnóstico , Disfunção Ventricular Esquerda/etiologia
5.
Children (Basel) ; 7(11)2020 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-33266491

RESUMO

In patients with Duchenne muscular dystrophy (DMD), death secondary to cardiac or respiratory failure typically occurs in the second or third decade without treatment. Although cardiac dysfunction is treated with standard heart-failure strategies, it remains insufficient in DMD children. The purpose of this study was to evaluate the efficiency of cardiac medication and noninvasive ventilator support in DMD cardiomyopathy children with analyzing echocardiographic data. Forty-eight DMD children patients were included and divided into 2 groups by left ventricular (LV) ejection fraction (EF) at the time of initial treatment. Group 1: LV EF ≥ 45% and Group 2: LV EF < 45%. p-values were calculated using a Linear mixed model to estimate the association between cardiac medications and echocardiographic measurements. Before and after cardiac medications, the change values were significantly different in interventricular septal thickness at end diastole (IVSd), interventricular septal thickness at end systole (IVSs), left ventricular internal diameter end systole (LVIDs), left ventricular posterior wall thickness end diastole (LVPWd), ejection fraction (EF), fractional shortening (FS), deceleration time (DT), DT slope, Lat A' and Lat E/E' (p < 0.05). Group 2 patients revealed to take more kinds of cardiac medications than Group 1 (p < 0.05) including ACEIs, beta-blocker, and inotropics, then LV EF was better preserved in Group 2 than Group 1. It is certainly helpful to take individualized medical combination therapy including inotropic agents for cardiomyopathy in DMD children patients with EF < 45%.

6.
J Clin Med ; 9(11)2020 Nov 12.
Artigo em Inglês | MEDLINE | ID: mdl-33198239

RESUMO

Transcatheter device closure of a secundum atrial septal defect (ASD) is followed by a noticeable change in the left atrium (LA) and left ventricle (LV) over a long-term follow-up. This study aimed to assess the remodeling of the atrial and ventricular myocardium with respect to diastolic function in adult ASD patients. Around 38 asymptomatic patients (age: 48.6 ± 17.1 years, range: 23-69 years) diagnosed with ASD during routine health check-up and who underwent ASD device closure with the Amplatzer septal occluder were included in this retrospective study, and their medical records (containing echocardiographic data) were reviewed. The defect size was 21.77 + 6.79 mm, while the balloon measurement of the defect was 24.29 ± 6.64 mm. The patients were divided into two groups, namely, Group I (with 18 patients aged <50 years [mean: 33.06 ± 9.43 years] and Group II (with 20 patients aged ≥50 years [mean: 62.55 ± 7.54 years]). Comparison of echocardiographic data collected before closure and at a follow-up 2 years later revealed significant differences between pre-closure and post-closure states in the left ventricular end-diastolic dimension (40.76 ± 3.28 vs. 43.39 ± 3.52), left ventricular mass (99.64 ± 28.81 vs. 116.57 ± 32.03), and right ventricular pressure (36.88 ± 12.20 vs. 31.81 ± 11.11). Tissue Doppler measurements were significantly decreased 2 years after closure, while the post-closure E/E' was higher than the pre-closure E/E' (11.58 ± 4.80 vs. 8.79 + 3.19, p < 0.005). In both groups, mitral A and tissue Doppler E', A', and S' values decreased post-closure, while the E/E' was higher in Group II than in Group I at both pre-closure and long-term follow-up measurements (pre-closure: 9.60 ± 5.15 vs. 7.41 ± 1.42, p < 0.003; post-closure: 13.03 + 4.05 vs. 10.49 ± 3.95, p < 0.02). The LA size and LV function exhibited recognizable remodeling after transcatheter ASD closure. Because the LV preload elevation (i.e., E/E') after ASD closure can be pronounced in older patients, caution should be provided more in older patients than in younger patients. Hence, it may be beneficial to close the ASD at an earlier age in adults even after a late diagnosis; a relatively younger age may be more suited for adaptation to the remodeling process to protect the myocardial function. Careful consideration should be given to the previous underloaded left heart after long-term closure.

7.
Pediatr Infect Dis J ; 39(11): 1012-1016, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-33075217

RESUMO

BACKGROUND: This study aimed to investigate recent epidemiologic features of Kawasaki disease (KD) in South Korea. METHODS: The ninth triennial nationwide questionnaire survey collected data on the demographic findings, symptoms and signs, treatment patterns and coronary artery complications of acute-phase KD occurred in 2015-2017 from 98 hospitals with pediatric residency programs and 108 community hospitals without residency programs. RESULTS: We received data from 93 of the 98 hospitals (response rate: 94.9%) with residency programs and 75 of the 108 community-based children's hospitals (response rate: 69.4%) without residency programs. In the 3-year survey period, a total of 15,378 (5449 in 2015, 5171 in 2016 and 4758 in 2017) cases of KD were reported. The mean age at diagnosis was 33.0 ± 24.8 months (range: 0-205 months), and the male-to-female ratio was 1.41:1. The overall KD incidence was 196.9 (202.2 in 2015, 197.1 in 2016 and 191.0 in 2017) per 100,000 younger than 5 years population. Recurrent cases were 4.85%. KD occurred more frequently during winter (December-January) and late spring (May-June). Intravenous immunoglobulin (IVIG) was administered to 95% of the patients; nonresponder rate for the first IVIG was 14.8%. Coronary artery aneurysms and giant coronary artery aneurysms (internal diameter >8 mm) occurred in 1.7% and 19 patients, respectively. Two patients died due to multiorgan failure and hepatic encephalopathy. CONCLUSION: Peak incidence of KD in South Korea was 202.2 per 100,000 younger than 5 years population (2015), and the incidence of giant coronary artery aneurysm decreased to 0.09% (2017).


Assuntos
Síndrome de Linfonodos Mucocutâneos/epidemiologia , Adolescente , Criança , Pré-Escolar , Aneurisma Coronário/epidemiologia , Aneurisma Coronário/etiologia , Feminino , Humanos , Imunoglobulinas Intravenosas/uso terapêutico , Incidência , Lactente , Recém-Nascido , Masculino , Síndrome de Linfonodos Mucocutâneos/complicações , Síndrome de Linfonodos Mucocutâneos/tratamento farmacológico , República da Coreia/epidemiologia , Inquéritos e Questionários
8.
J Clin Med ; 9(9)2020 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-32859019

RESUMO

Percutaneous pulmonary valve implantation (PPVI) is used to treat pulmonary stenosis (PS) or pulmonary regurgitation (PR). We described our experience with PPVI, specifically valve-in-valve transcatheter pulmonary valve replacement using the Melody valve and novel self-expandable systems using the Pulsta valve. We reviewed data from 42 patients undergoing PPVI. Twenty-nine patients had Melody valves in mostly bioprosthetic valves, valved conduits, and homografts in the pulmonary position. Following Melody valve implantation, the peak right ventricle-to-pulmonary artery gradient decreased from 51.3 ± 11.5 to 16.7 ± 3.3 mmHg and right ventricular systolic pressure fell from 70.0 ± 16.8 to 41.3 ± 17.8 mmHg. Thirteen patients with native right ventricular outflow tract (RVOT) lesions and homograft underwent PPVI with the new self-expandable Pulsta valve-a nitinol wire stent mounted with a trileaflet porcine pericardial valve. Following Pulsta valve implantation, cardiac magnetic resonance imaging showed a decreased PR fraction and that the right ventricular end-diastolic volume index decreased from 166.1 ± 11.9 to 123.6 ± 12.4 mL/m2. There were no mortality, severe procedural morbidity, or valve-related complications. At the mean 14.2 month (4-57 months) follow-up, no patients had more than mild PR. PPVI using Melody and Pulsta valves was first shown to provide excellent early outcomes without serious adverse event in most patients with RVOT dysfunction in Korea.

9.
Korean Circ J ; 49(12): 1181-1182, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31760705
11.
Korean J Pediatr ; 62(8): 301-306, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30744317

RESUMO

PURPOSE: Coronary artery abnormalities (CAA) are the most important complications of Kawasaki disease (KD). Iron deficiency anemia (IDA) is a prevalent micronutrient deficiency and its association with KD remains unknown. We hypothesized that presence of IDA could be a predictor of CAA. METHODS: This retrospective study included 173 KD patients, divided into 2 groups according to absence (group 1) and presence (group 2) of CAA. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using a logistic regression model to estimate the association between CAA and other indicators. Due to collinearity between indicators of IDA, each indicator was paired with anemia in 3 models. RESULTS: Serum iron, iron saturation, and ferritin concentration, the 3 indicators of IDA, were significantly higher in group 1 than in group 2. Three sets of models including anemia with iron indicators produced the OR of CAA of 3.513, 3.171, and 2.256, respectively. The 3 indicators of IDA were negatively associated with CAA, by OR of 0.965, 0.914, and 0.944, respectively. The areas under the curve (AUCs) of ferritin concentration, iron saturation, serum iron, anemia, and Kobayashi score were 0.907 (95% CI, 0.851-0.963), 0.729 (95% CI, 0.648-0.810), 0.711 (95% CI, 0.629-0.793), 0.638 (95% CI, 0.545-0.731), and 0.563 (95% CI, 0.489-0.636), respectively. CONCLUSION: Indicators of IDA, especially ferritin, were highly associated with CAA; therefore, they were stronger predictors of CAA than Kobayashi scores. IDA indicators can be used to predict CAA development and to suggest requirements for early interventions.

12.
Korean Circ J ; 49(2): 192-193, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30693682
13.
Pediatr Cardiol ; 40(3): 461-467, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30218119

RESUMO

Timely diagnosis of coronary involvement is paramount in Kawasaki disease (KD) as it can be associated with long-term morbidity. However, echocardiographic measurements of coronary artery dilation in KD are inconsistent and not proficient for all abnormal arteries. The purpose of this study was to investigate more valuable indices and determine their sensitivity and specificity for early diagnosis of coronary involvement in KD. We performed this retrospective study in 218 children. All patients underwent laboratory and echocardiographic evaluations upon admission. We measured the size of the left main coronary artery (LMA), left anterior descending coronary artery (LAD), right coronary artery (RCA), and aorta (Ao), and calculated the LMA/Ao, LAD/Ao, and RCA/Ao ratios. We also calculated the cut-off values of each index using receiver operating characteristic curves. LMA, LAD, and RCA measurements did not correlate with white blood cell count, platelet count, erythrocyte sedimentation rate, C-reactive protein level, or brain natriuretic peptide level. The LMA measurement was associated with hemoglobin, hematocrit, and iron saturation. LAD/Ao was correlated with white blood cell and platelet counts (P < 0.05), whereas RCA/Ao was correlated with ferritin level (P < 0.05). The cut-off value of LMA/Ao was 0.2, with a sensitivity of 85% and specificity of 70%. Individual coronary artery/Ao ratios might provide helpful insight for detection of coronary abnormality in KD in the acute phase. Further investigation is essential to clarify prompt early diagnosis of coronary involvement in KD.


Assuntos
Aorta/diagnóstico por imagem , Doença da Artéria Coronariana/diagnóstico por imagem , Vasos Coronários/diagnóstico por imagem , Ecocardiografia/métodos , Síndrome de Linfonodos Mucocutâneos/diagnóstico por imagem , Criança , Pré-Escolar , Doença da Artéria Coronariana/complicações , Humanos , Lactente , Síndrome de Linfonodos Mucocutâneos/complicações , Estudos Retrospectivos , Sensibilidade e Especificidade
14.
Korean J Pediatr ; 61(2): 59-63, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29563946

RESUMO

Purpose: Cardiomyopathy is becoming the leading cause of death in patients with Duchenne muscular dystrophy because mechanically assisted lung ventilation and assisted coughing have helped resolve respiratory complications. To clarify cardiopulmonary function, we compared cardiac function between the home ventilator-assisted and non-ventilator-assisted groups. Methods: We retrospectively reviewed patients with Duchenne muscular dystrophy from January 2010 to March 2016 at Gangnam Severance Hospital. Demographic characteristics, pulmonary function, and echocardiography data were investigated. Results: Fifty-four patients with Duchenne muscular dystrophy were divided into 2 groups: home ventilator-assisted and non-ventilator-assisted. The patients in the home ventilator group were older (16.25±1.85 years) than those in the nonventilator group (14.73±1.36 years) (P=0.001). Height, weight, and body surface area did not differ significantly between groups. The home ventilator group had a lower seated functional vital capacity (1,038±620.41 mL) than the nonventilator group (1,455±603.12 mL). Mean left ventricular ejection fraction and fractional shortening were greater in the home ventilator group, but the data did not show any statistical difference. The early ventricular filling velocity/late ventricular filling velocity ratio (1.7±0.44) was lower in the home ventilator group than in the nonventilator group (2.02±0.62). The mitral valve annular systolic velocity was higher in the home ventilator group (estimated ß, 1.06; standard error, 0.48). Patients with Duchenne muscular dystrophy on a ventilator may have better systolic and diastolic cardiac functions. Conclusion: Noninvasive ventilator assistance can help preserve cardiac function. Therefore, early utilization of noninvasive ventilation or oxygen may positively influence cardiac function in patients with Duchenne muscular dystrophy.

15.
Yonsei Med J ; 59(1): 128-134, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29214787

RESUMO

PURPOSE: Children with mitochondrial disease (MD) have clinical phenotypes that are more severe than those found in adults. In this study, we assessed cardiac function in children with MD using conventional and advanced echocardiographic measurements, explored any unique patterns present, and investigated the development of early cardiomyopathy (CMP). MATERIALS AND METHODS: We retrospectively reviewed the medical records of 33 children with MD. All patients underwent transthoracic echocardiography with conventional and advanced myocardial analysis. We compared all data between patients and an age-matched healthy control group. RESULTS: Conventional echocardiographic diastolic measurements of mitral E, E/A, and tissue Doppler E' were significantly lower and E/E' was significantly higher in children with MD, compared with the measurements from the control group. There was no significant difference in longitudinal and radial strain between the groups. Circumferential strain in the endocardium (p=0.161), middle myocardium (p=0.008), and epicardium (p=0.042) were lower in patients, compared to the values in controls. Circumferential strain was correlated with E' (p<0.01, r>0.60). CONCLUSION: In children with MD, myocardial circumferential strain may develop early in all three layers, even with normally preserved longitudinal and radial strain. This may be an early diagnostic indicator with which to predict CMP in this patient population.


Assuntos
Doenças Mitocondriais/patologia , Doenças Mitocondriais/fisiopatologia , Miocárdio/patologia , Fenômenos Biomecânicos , Criança , Ecocardiografia Doppler , Feminino , Humanos , Masculino , Doenças Mitocondriais/diagnóstico por imagem
16.
Korean J Pediatr ; 60(2): 38-44, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28289432

RESUMO

PURPOSE: Kawasaki disease (KD) is an immune-related multisystemic vasculitis that occurs in children, especially ensuing from a coronary artery abnormality. Sodium level is known to be related to vascular injury, which could affect the progress of KD. The purpose of this study was to determine the serum sodium levels that could predict the occurrence of cardiac and coronary artery events in KD. METHODS: We conducted a retrospective review of medical records for 104 patients with KD from January 2015 to December 2015. Patients with serum Na levels of <135 mEq/L at the time of initial diagnosis were assigned to the hyponatremia group. Laboratory findings and echocardiographic data were analyzed for various aspects. RESULTS: Among the 104 patients with KD, 91 were included in the study, of whom 48 (52.7%) had hyponatremia. The degree of fever, white blood cell count, percentage of neutrophils, percentage of lymphocytes, total bilirubin level, brain natriuretic peptide level, erythrocyte sedimentation rate, and C-reactive protein level were higher in the patients with hyponatremia. They also demonstrated a trend of larger coronary artery diameters based on Z scores. CONCLUSION: The severity of vascular inflammation in acute KD with hyponatremia might worsen the prognosis of coronary vasculature. Although no statistically significant correlation was found between the initial serum sodium levels and coronary arteriopathy in the patients with KD in this study, a long-term follow-up study with a larger number of enrolled patients should be designed in the future to elucidate the relationship between serum sodium level and coronary arteriopathy in patients with KD.

18.
Pediatr Infect Dis J ; 36(5): 482-485, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-27997519

RESUMO

BACKGROUND: To reveal the recent epidemiologic features of Kawasaki disease (KD) in South Korea based on data from a nationwide survey. METHODS: We collected data between 2012 and 2014 regarding the incidence, symptoms and signs, treatment trends and coronary complications associated with acute KD by sending questionnaires to 97 hospitals with pediatric residency programs as well as 19 community hospitals without residency training. RESULTS: We received full and partial data from 97 and 13 hospitals, respectively (response rate: 94.8%). A total of 14,916 cases of KD were reported by these 110 hospitals (4588 in 2012, 5183 in 2013 and 5145 in 2014). The male-to-female ratio was 1.4:1, and the median age at diagnosis was 29 months. The incidence of KD per 100,000 children younger than 5 years of age were 170.9, 194.9 and 194.7 in 2012, 2013 and 2014, respectively. The recurrence rate was 4.7%. KD occurred more frequently during summer (especially June and July) and winter (December and January) seasons. Intravenous immunoglobulin was administered to 95.4% of the patients, and the nonresponder rate for the first intravenous immunoglobulin was 11.8%. Coronary aneurysm occurred in 1.7% of the patients, and giant aneurysm developed in 19 patients (0.16%) during the 3 years. One patient had myocardial infarction and 1 patient died of suspected coronary aneurysm rupture. CONCLUSIONS: The incidence of KD in South Korea increased to 194.7 per 100,000 children younger than 5 years in 2014; meanwhile, the coronary aneurysm rate decreased to 1.7%.


Assuntos
Síndrome de Linfonodos Mucocutâneos/epidemiologia , Síndrome de Linfonodos Mucocutâneos/patologia , Adolescente , Distribuição por Idade , Criança , Pré-Escolar , Aneurisma Coronário/epidemiologia , Aneurisma Coronário/etiologia , Feminino , Humanos , Imunoglobulinas Intravenosas/uso terapêutico , Incidência , Lactente , Masculino , Síndrome de Linfonodos Mucocutâneos/complicações , República da Coreia/epidemiologia , Estações do Ano , Distribuição por Sexo , Inquéritos e Questionários , Adulto Jovem
19.
Sci Rep ; 6: 39772, 2016 12 22.
Artigo em Inglês | MEDLINE | ID: mdl-28004817

RESUMO

The purpose of this study was to investigate Korean elite soccer players' myocardial function using the conventional and advanced speckle tracking imaging to compare the difference with the normal controls. We used 2D echocardiography speckle tracking echocardiography (STE) to evaluate LV regional strain in 29 elite soccer players compared to 29 age-matched healthy controls. Conventional, tissue Doppler, and STI echocardiography was performed, for strain at base and apex, rotation and torsion. There is no difference in longitudinal strain (-17.6 ± 1.8 vs -17.3 ± 2.9, p = ns), and basal radial strain. However, the significant increases were noticed in basal circumferential strain (-17.5 ± 2.6 vs -15.5 ± 8.9, p = 0.05), apical radial strain (33.1 ± 20.5 vs 22.5 ± 19.4, p = 0.02), and apical circumferential strain in soccer players (-21.4 ± 4.8 vs -16.8 ± 7.6, p = 0.005). Soccer players showed the higher rotation at base (-3.9 ± 1.9 vs -2.6 ± 3.2, p = 0.03), and apex (6.98 ± 2.62 vs 6.21 ± 3.81, p = 0.05), higher torsion (10.9 ± 3.7 vs 8.8 ± 6.3, p = 0.05). In conclusion, the elite soccer players' heart demonstrated the unique ventricular adaptation. These alterations could benefit the cardiovascular adjustment to exercise without much loss of myocardial energy expenditure.


Assuntos
Ventrículos do Coração/diagnóstico por imagem , Miocárdio , Futebol , Função Ventricular , Adulto , Atletas , Ecocardiografia Doppler , Humanos , Masculino , República da Coreia
20.
J Cardiovasc Ultrasound ; 24(3): 223-228, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27721953

RESUMO

BACKGROUND: The speckle tracking echocardiography can benefit to assess the regional myocardial deformations. Although, previous reports suggested no significant change in left ventricular (LV) torsion with aging, there are certain differences in LV rotation at the base and apex. The purpose of this study was to evaluate the change and relationship of LV rotation for torsion with aging in children. METHODS: Forty healthy children were recruited and divided into two groups of twenty based on whether the children were preschool-age (2-6 years of age) or school-age (7-12 years of age). After obtaining conventional echocardiographic data, apical and basal short axis rotation were assessed with speckle tracking echocardiography. LV rotation in the basal and apical short axis planes was determined using six myocardial segments along the central axis. RESULTS: Apical and basal LV rotation did not show the statistical difference with increased age between preschool- and school-age children. Apical radial strain showed significant higher values in preschool-age children, especially at the anterior (52.8 ± 17.4% vs. 34.7 ± 23.2%, p < 0.02), lateral (55.8 ± 20.4% vs. 36.1 ± 22.7%, p < 0.02), and posterior segments (57.1 ± 17.6% vs. 38.5 ± 21.7%, p < 0.01). The torsion values did not demonstrate the statistical difference between two groups. CONCLUSION: This study revealed the tendency of higher rotation values in preschool-age children than in school-age children. The lesser values of rotation and torsion with increased age during childhood warrant further investigation.

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