ISSN: 1859 - 2872
Relationship between left ventricular myocardial strains, twist, torsion assessed using three dimensional speckle tracking echocardiography and some clinical and subclinical factors in patients with chronic heart failure
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Abstract
Objective: To evaluate the correlation between the parameters of left ventricular twist, torsion and strains measured on 3D speckle tracking echocardiography with some clinical and subclinical factors in patients with chronic heart failure. Subject and method: The study was performed on 110 patients with chronic heart failure and 3D tissue-marked echocardiography was performed, analyzed by TOMTEC software, and then found the correlation between left ventricle twist, torsion, strains with some clinical and subclinical factors. Result: Left ventricular strains decreased gradually according to NYHA and had a moderate to strong correlation with the walking distance of 6 minutes (r = 0.5-0.65; p<0.01). Left ventricular strains measured on 3D speckle tracking echocardiography was strongly correlated with GLPS (GLS r = -0.67; GRS r = 0.80; GCS r = -0.80; GAS r = -0.83 with p<0.001), moderately closely correlated with Dd (GLS r = 0.52; GRS r = -0.63; GCS r = 0.63; GAS r = 0.66 with p<0.05), moderately strongly correlated with EDV (GLS r = 0.52, GRS r = -0.62; GCS r = 0.61; GAS r = 0.64 with p<0.05), moderately strongly correlated with FS (GLS) = -0.62, GRS r = 0.72; GCS r = -0.71, GAS r = -0.74 with p<0.05). Left ventricular Twist, Torsion gradually decreased according to the NYHA dyspnea levels but were not statistically significant. Left ventricular Twist and Torsion were weakly correlated with 6-minute walking distance (Twist r = 0.34; Torsion r=0.39 with p<0.05). Left ventricular Twist, Torsion are moderately correlated with longitudinal axial tension measured on 2D-speckle tracking echocardiography (Twist
r = -0.48; Torsion r = -0.51; with p<0.05), with Dd (Twist r = -0.43; Torsion r = -0.49 with p<0.05), with EDV (Twist r = -0.44; Torsion r = -0.49 with p<0.05), with FS (Twist r = 0.52; Torsion r = 0.57 with p<0.05). Conclusion: Left ventricular strains decreased gradually according to NYHA and had a moderate to tight correlation with the 6-minute walking distance, a fairly close correlation with GLPS, a moderate correlation with Dd, EDV, FS. Left ventricular Twist, Torsion decreased gradually with NYHA dyspnea levels but not statistically significant, weakly correlated with 6-minute walking distance, fairly closely correlated with GLPS, moderately strongly correlated with Dd, EDV, FS.
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References
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