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• W2040300304 abstract "Background Fabry cardiomyopathy is characterized by progressive left ventricular hypertrophy (LVH) associated with diastolic dysfunction and is the most common cause of death in Fabry disease (FD). However, LVH is not present in all subjects, particularly early in disease progression and in female patients. Direct assessment of myocardial deformation by strain and strain rate (SR) analysis may be sensitive to detect subclinical Fabry cardiomyopathy independent of the presence of LVH. Methods Systolic (longitudinal, circumferential, and radial systolic strain and SR) and diastolic (SR during isovolumic relaxation [SRIVR] and early diastole and strain at peak transmitral E wave) function was assessed in 16 patients with FD using two-dimensional speckle-tracking echocardiography. In addition, mean S′ and E′ mitral annular velocities by Doppler tissue imaging were measured. Diastolic filling indices, including E/SRIVR and E/E′ ratios, were calculated. The patients were compared with 24 healthy age-matched and gender-matched controls. Results All 16 patients with FD had normal left ventricular ejection fractions, and nine patients had LVH. Compared with controls, patients with FD had reduced longitudinal systolic strain (P < .001) and systolic SR (P = .007), while there were no differences in circumferential systolic strain and S′. Diastolic function assessment showed reduced longitudinal early diastolic SR (P = .001), SRIVR (P < .001), and E/SRIVR (P < .001), while radial and circumferential diastolic function was not affected. Of the conventional diastolic function indices, reductions were seen in E (P = .006), E′ (P = .021), and E/E′ ratio (P < .001). After correcting for LVH, only SRIVR (P < .001) and E/SRIVR (P = .025) remained significantly different between patients with FD and controls, with sensitivity of 94% and specificity of 92% for SRIVR of 0.235 sec−1 (area under the receiver operating characteristic curve, 0.953). Conclusions Strain and SR analysis is useful in identifying patients with FD with reduced myocardial function, with longitudinal systolic strain and diastolic isovolumic SR being superior to the other echocardiographic measurements of myocardial contraction and relaxation and independent of LVH. Fabry cardiomyopathy is characterized by progressive left ventricular hypertrophy (LVH) associated with diastolic dysfunction and is the most common cause of death in Fabry disease (FD). However, LVH is not present in all subjects, particularly early in disease progression and in female patients. Direct assessment of myocardial deformation by strain and strain rate (SR) analysis may be sensitive to detect subclinical Fabry cardiomyopathy independent of the presence of LVH. Systolic (longitudinal, circumferential, and radial systolic strain and SR) and diastolic (SR during isovolumic relaxation [SRIVR] and early diastole and strain at peak transmitral E wave) function was assessed in 16 patients with FD using two-dimensional speckle-tracking echocardiography. In addition, mean S′ and E′ mitral annular velocities by Doppler tissue imaging were measured. Diastolic filling indices, including E/SRIVR and E/E′ ratios, were calculated. The patients were compared with 24 healthy age-matched and gender-matched controls. All 16 patients with FD had normal left ventricular ejection fractions, and nine patients had LVH. Compared with controls, patients with FD had reduced longitudinal systolic strain (P < .001) and systolic SR (P = .007), while there were no differences in circumferential systolic strain and S′. Diastolic function assessment showed reduced longitudinal early diastolic SR (P = .001), SRIVR (P < .001), and E/SRIVR (P < .001), while radial and circumferential diastolic function was not affected. Of the conventional diastolic function indices, reductions were seen in E (P = .006), E′ (P = .021), and E/E′ ratio (P < .001). After correcting for LVH, only SRIVR (P < .001) and E/SRIVR (P = .025) remained significantly different between patients with FD and controls, with sensitivity of 94% and specificity of 92% for SRIVR of 0.235 sec−1 (area under the receiver operating characteristic curve, 0.953). Strain and SR analysis is useful in identifying patients with FD with reduced myocardial function, with longitudinal systolic strain and diastolic isovolumic SR being superior to the other echocardiographic measurements of myocardial contraction and relaxation and independent of LVH." @default.
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• W2040300304 date "2013-12-01" @default.
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• W2040300304 title "Systolic and Diastolic Function Assessment in Fabry Disease Patients Using Speckle-Tracking Imaging and Comparison with Conventional Echocardiographic Measurements" @default.
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• W2040300304 doi "https://doi.org/10.1016/j.echo.2013.09.005" @default.
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