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Unlabelled: Acute myocardial infarction (AMI) remains a leading cause of morbidity and mortality worldwide. LV remodeling is an important factor in the pathophysiology of advancing heart failure (HF).
Aim Of The Work: To evaluate the value of speckle tracking imaging as a predictor of left ventricular remodeling 6 months after first anterior STEMI in patients managed by primary PCI.
Methodology: Eighty-five patients with first acute anterior STEMI underwent primary PCI. Patients were followed up for 6 months. [1] Standard transthoracic 2D echocardiographic examination: LV internal dimensions and volumes, Left Ventricular EF, and Wall Motion Score Index: [2] LV peak systolic global longitudinal strain and Torsion dynamics were assessed. LV volumes and EF were calculated. was defined as an increase in LV EDV ≥ 20% 6 months after infarction as compared to baseline data. Patients were then classified into : did not develop LV remodeling. : developed LV remodeling. Both groups were studied to determine predictors of LV remodeling.
Results: echocardiographic evaluation there was no statistically significant difference between both groups regarding both LVEDD and LVEDV, while there was statistically significant increase in both LV ESD and LV ESV, with statistically significant lower Ejection Fraction, in LV remodeling group. There was also statistically significant higher LV peak systolic GLS values in LV remodeling group, the best cut-off value was >-12.5 (Sensitivity 87%, Specificity 85%) and LV torsion was also statistically significantly lower in the LV remodeling group, with the best cut-off value for LV torsion was <9.5°, [Sensitivity 91%, Specificity 85%]. baseline WMSI > 1.8, baseline LV EF < 40, GLS > -12.5%, LV torsion < 9.5°, CK-MB > 500 U/L, baseline Thrombus grade > 4 and total ischemic time.
Conclusion: Average peak systolic GLS and LV torsion at echocardiography done early after myocardial infarction are independent predictors of LV remodeling after anterior STEMI and can be used to predict occurrence of LV remodeling after 6 months.
Download full-text PDF |
Source |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6303382 | PMC |
http://dx.doi.org/10.1016/j.ehj.2018.06.006 | DOI Listing |
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