AIM:To examine the feasibility and reliability of measuring global and segmental longitudinal strain(LS) compared to visual assessment of wall motion(WM).METHODS:Assessment of segmental(17 left ventricular segments) L...AIM:To examine the feasibility and reliability of measuring global and segmental longitudinal strain(LS) compared to visual assessment of wall motion(WM).METHODS:Assessment of segmental(17 left ventricular segments) LS using automatic function imaging(AFI) in 55 patients(60.0 ± 8.7 years,73% male) divided into 2 groups:groupⅠ included 35 patients with WM abnormalities and/or impaired ejection fraction and group Ⅱ included 20 patients with normal WM and ejection fraction.Visual analysis of WM abnormalities was performed using 2-dimensional echocardiography(2DE) and WM score was calculated.Both modalities were analyzed by one expert reader at 2 different sessions.RESULTS:Analysis of 935 left ventricular segments was completed in 94.1% and 96.3% by visual assessment and AFI,respectively.There was a strong positive linear relationship between the WM score and global LS in all patients.Intra-observer agreement for calculation of WM score was excellent for groupⅠ patients(kappa:0.97) and very good for group Ⅱ patients(kappa:0.92).Intra-observer agreement for AFI showed excellent agreement with very small mean difference in both groupⅠ and Ⅱ(-0.0 ± 2.3 and-0.0 ± 1.9,respectively).CONCLUSION:The interpretation of global and segmental LS using AFI is a more feasible and reliable technique for the quantification of myocardial deformation than visual assessment of WM scores.展开更多
<div style="text-align:justify;"> <strong>Background:</strong> <span "="">Cardiac involvement and the consequences of inflammation induced by SARS-CoV2 infection could ...<div style="text-align:justify;"> <strong>Background:</strong> <span "="">Cardiac involvement and the consequences of inflammation induced by SARS-CoV2 infection could have catastrophic long-term consequences. Left ventricular mechanics could identify a specific pattern of myocardial fiber damage in patients infected with COVID-19. To our knowledge there are no publications referring to the global description of ventricular mechanics in patients with COVID-19. <b>Objective: </b>To describe left ventricular mechanics in hospitalized patients with COVID-19. <b>Methods:</b> In this cross-sectional study, we included 40 hospitalized patients with confirmed diagnostic of COVID-19, from April 11, 2020, to September 6, 2020. Demographic and laboratory data, clinical and echocardiographic characteristics were collected, as well as events during hospitalization. Left ventricular deformation was analyzed and reported. <b>Results: </b>Subclinical dysfunction was observed in 82.5% (left ventricular longitudinal strain [LVGLS] </span><span "="">-17.05% and global circumferential strain [GCS] -18.6%) of the patients, likewise, the mean twist and apical rotation were preserved, and even increased as part of the compensating mechanism to maintain the ejection fraction. <b>Conclusion:</b> In patients hospitalized with COVID-19, despite having a normal left ventricular ejection fraction, subclinical myocardial damage was found, manifested by a decrease in Global Longitudinal Strain (GLS) and Global Circumferential Strain (GCS). This behavior is similar to that of cardiomyopathies in the early stage of the disease, and given the pathophysiological mechanisms involved in the disease, its long-term consequences should be monitored and evaluated</span>. </div>展开更多
<strong>Background:</strong> <span style="white-space:normal;"><span style="font-family:;" "="">Atrial fibrillation (AF) is the most common cardiac arrhythmia...<strong>Background:</strong> <span style="white-space:normal;"><span style="font-family:;" "="">Atrial fibrillation (AF) is the most common cardiac arrhythmia. It increases cardiovascular morbidity, especially embolic stroke and mortality. Two-dimensional speckle tracking echocardiography (2D STE) is a useful method that has been used to detect changes in atrial myocardial deformation in AF patients.</span></span><span style="white-space:normal;"><span style="font-family:;" "=""> </span></span><span style="white-space:normal;"><b><span style="font-family:;" "="">Objectives:</span></b></span><span style="white-space:normal;"><span style="font-family:;" "=""> To study atrial myocardial deformation changes in patient with non</span></span><span style="white-space:normal;"><span style="font-family:;" "="">-</span></span><span style="white-space:normal;"><span style="font-family:;" "="">valvular AF using 2D STE.<b> Patients and Methods: </b>This study included 25 patients with non</span></span><span style="white-space:normal;"><span style="font-family:;" "="">-</span></span><span style="white-space:normal;"><span style="font-family:;" "="">valvular AF and 25 normal healthy controls. 2D STE was used for assessment of strain and strain rate of septal and free walls of both right atrium (RA) and LA and left ventricle (LV). <b>Results:</b> Mean LA septal and lateral strain and strain rate were significantly reduced in the AF group compared to the control group (-7.2% ± 5.2% vs. -20.4% ± 3.9%, -8.7% ± 8.8% vs. -21.7% ± 3.4%) and (-0.9 ± 0.5 S<sup>-1</sup> vs. -1.9 ± 0.4 S<sup>-1</sup>, –1.1 ± 0.6 S<sup>-1</sup> vs. -2.04 ± 0.3 S<sup>-1</sup>) respectively. Mean RA septal and lateral strain and strain rate were significantly reduced in the AF group compared to the control group (-5.9% ± 6.1% vs. -23.4% ± 4.5%, -8.9% ± 9.3% vs. -21.7% ± 3.4%) and (-0.98 ± 0.6 S<sup>-1</sup> vs. -1.9 ± 0.3 S<sup>-1</sup>, -1.3 ± 0.9 S<sup>-1</sup> vs. -2.1 ± 0.5 S<sup>-1</sup>) respectively. Mean LV global longitudinal strai展开更多
文摘AIM:To examine the feasibility and reliability of measuring global and segmental longitudinal strain(LS) compared to visual assessment of wall motion(WM).METHODS:Assessment of segmental(17 left ventricular segments) LS using automatic function imaging(AFI) in 55 patients(60.0 ± 8.7 years,73% male) divided into 2 groups:groupⅠ included 35 patients with WM abnormalities and/or impaired ejection fraction and group Ⅱ included 20 patients with normal WM and ejection fraction.Visual analysis of WM abnormalities was performed using 2-dimensional echocardiography(2DE) and WM score was calculated.Both modalities were analyzed by one expert reader at 2 different sessions.RESULTS:Analysis of 935 left ventricular segments was completed in 94.1% and 96.3% by visual assessment and AFI,respectively.There was a strong positive linear relationship between the WM score and global LS in all patients.Intra-observer agreement for calculation of WM score was excellent for groupⅠ patients(kappa:0.97) and very good for group Ⅱ patients(kappa:0.92).Intra-observer agreement for AFI showed excellent agreement with very small mean difference in both groupⅠ and Ⅱ(-0.0 ± 2.3 and-0.0 ± 1.9,respectively).CONCLUSION:The interpretation of global and segmental LS using AFI is a more feasible and reliable technique for the quantification of myocardial deformation than visual assessment of WM scores.
文摘<div style="text-align:justify;"> <strong>Background:</strong> <span "="">Cardiac involvement and the consequences of inflammation induced by SARS-CoV2 infection could have catastrophic long-term consequences. Left ventricular mechanics could identify a specific pattern of myocardial fiber damage in patients infected with COVID-19. To our knowledge there are no publications referring to the global description of ventricular mechanics in patients with COVID-19. <b>Objective: </b>To describe left ventricular mechanics in hospitalized patients with COVID-19. <b>Methods:</b> In this cross-sectional study, we included 40 hospitalized patients with confirmed diagnostic of COVID-19, from April 11, 2020, to September 6, 2020. Demographic and laboratory data, clinical and echocardiographic characteristics were collected, as well as events during hospitalization. Left ventricular deformation was analyzed and reported. <b>Results: </b>Subclinical dysfunction was observed in 82.5% (left ventricular longitudinal strain [LVGLS] </span><span "="">-17.05% and global circumferential strain [GCS] -18.6%) of the patients, likewise, the mean twist and apical rotation were preserved, and even increased as part of the compensating mechanism to maintain the ejection fraction. <b>Conclusion:</b> In patients hospitalized with COVID-19, despite having a normal left ventricular ejection fraction, subclinical myocardial damage was found, manifested by a decrease in Global Longitudinal Strain (GLS) and Global Circumferential Strain (GCS). This behavior is similar to that of cardiomyopathies in the early stage of the disease, and given the pathophysiological mechanisms involved in the disease, its long-term consequences should be monitored and evaluated</span>. </div>
文摘<strong>Background:</strong> <span style="white-space:normal;"><span style="font-family:;" "="">Atrial fibrillation (AF) is the most common cardiac arrhythmia. It increases cardiovascular morbidity, especially embolic stroke and mortality. Two-dimensional speckle tracking echocardiography (2D STE) is a useful method that has been used to detect changes in atrial myocardial deformation in AF patients.</span></span><span style="white-space:normal;"><span style="font-family:;" "=""> </span></span><span style="white-space:normal;"><b><span style="font-family:;" "="">Objectives:</span></b></span><span style="white-space:normal;"><span style="font-family:;" "=""> To study atrial myocardial deformation changes in patient with non</span></span><span style="white-space:normal;"><span style="font-family:;" "="">-</span></span><span style="white-space:normal;"><span style="font-family:;" "="">valvular AF using 2D STE.<b> Patients and Methods: </b>This study included 25 patients with non</span></span><span style="white-space:normal;"><span style="font-family:;" "="">-</span></span><span style="white-space:normal;"><span style="font-family:;" "="">valvular AF and 25 normal healthy controls. 2D STE was used for assessment of strain and strain rate of septal and free walls of both right atrium (RA) and LA and left ventricle (LV). <b>Results:</b> Mean LA septal and lateral strain and strain rate were significantly reduced in the AF group compared to the control group (-7.2% ± 5.2% vs. -20.4% ± 3.9%, -8.7% ± 8.8% vs. -21.7% ± 3.4%) and (-0.9 ± 0.5 S<sup>-1</sup> vs. -1.9 ± 0.4 S<sup>-1</sup>, –1.1 ± 0.6 S<sup>-1</sup> vs. -2.04 ± 0.3 S<sup>-1</sup>) respectively. Mean RA septal and lateral strain and strain rate were significantly reduced in the AF group compared to the control group (-5.9% ± 6.1% vs. -23.4% ± 4.5%, -8.9% ± 9.3% vs. -21.7% ± 3.4%) and (-0.98 ± 0.6 S<sup>-1</sup> vs. -1.9 ± 0.3 S<sup>-1</sup>, -1.3 ± 0.9 S<sup>-1</sup> vs. -2.1 ± 0.5 S<sup>-1</sup>) respectively. Mean LV global longitudinal strai
