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    The combined S velocity achieved from tricuspid annulus and pulmonary annulus with tissue Doppler imaging could predict the proximal right coronary artery occlusion in patients with inferior myocardial infarction
    (2022) Acar, Emrah; Ozgul, Neryan; Donmez, Ibrahim; Yalcin, Osman Yasin; Kayabas, Oguz; Alan, Sait; Izgi, Ibrahim Akin
    Aim: To investigate if combined S velocity (CSV) calculated from tricuspid annulus and pulmonary annulus\rwith tissue Doppler imaging in individuals with acute inferior myocardial infarction were linked to proximal\rRCA lesions.\rMethods: The study comprised 48 patient who had been diagnosed with acute inferior myocardial infarction\rand had culprit lesions in the right coronary artery. The RCA occlusion in Group A was proximal to the right\rventricular branch, while the RCA occlusion in Group B was distant to the RV branch. The combined S\rvelocity was tested, as well as other echocardiographic parameters.\rResults: In terms of metrics indicating right ventricular function, there were substantial disparities between\rthe groups. A favorable association was established in the univariate correlation analysis between CSV and\rtissue Doppler imaging derived tricuspid annulus systolic velocity (St), pulmonary annulus motion velocity\revaluated by TDI (PAMVUT), RV tricuspid annular plane systolic excursion (TAPSE), and fractional area\rchange (FAC). CSV was identified as an independent predictor of proximal RCA occlusion in a multivariate\rlogistic regression test. In the ROC analysis, CSV<18.3 cm/s and PAMVUT<8.6 cm/s indicated proximal\rRCA occlusion with 83 percent sensitivity and 71 percent specificity (AUC=0.83, p<0.001), and 85 percent\rsensitivity and 71 percent specificity (AUC=0.81, p<0.001), respectively.\rConclusion: CSV measurements were revealed to be an important predictor of proximal RCA occlusions in\rthis investigation.