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  • Title: Echocardiographic assessment of right ventricle free wall strain for prediction of right coronary artery proximal lesion in patients with inferior myocardial infarction.
    Author: Gecmen C, Candan O, Kahyaoglu M, Kalayci A, Cakmak EO, Karaduman A, Izgi IA, Kirma C.
    Journal: Int J Cardiovasc Imaging; 2018 Jul; 34(7):1109-1116. PubMed ID: 29479662.
    Abstract:
    In this study, our objective was to evaluate right ventricular functions with speckle-tracking and conventional echocardiographic methods in patients with acute inferior myocardial infarction and to investigate the correlation between the echocardiographic parameters and the prediction of the proximal RCA lesions. 77 patients were included in this study. Patients with a RCA occluded proximal to the right ventricular branch were assigned to Group 1 and patients with an RCA occlusion distal to the right ventricle branch were assigned to Group 2. All echocardiographic examinations were carried out within 24 h after PTCA, which was performed for the treatment of inferior myocardial infarction. RV TAPSE, RV TDI Sm, FAC, RV-FW strain, RV-FW SRE', RV-FW SRA' and RV E/Em which were statistically significant in univariate analysis were evaluated with the help of the multivariate logistic regression analysis. In the multivariate logistic regression test; RV-FW strain (OR 0.751, 95% CI 0.592-0.954, p = 0.019) and RV E/Em (OR 0.442, 95% CI 0.252-0.776, p = 0.004) were determined as the independent predictive parameters for proximal RCA occlusion. In the ROC analysis, RV-FW strain > - 14.75% predicted the proximal RCA occlusion with 83% sensitivity and 61% specificity (AUC = 0.81, p < 0.001) and RV E/Em > 6.25 with 68% sensitivity and 80% specificity (AUC = 0.79, p < 0.001). In this study, we demonstrated that decreased RV FW strain and increased RV E/Em were predictive parameters for the presence of the proximal RCA in patients with acute inferior MI.
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