24. Khảo sát một số chỉ số chức năng tâm thu thất phải bằng siêu âm tim ở bệnh nhân nhồi máu cơ tim cấp có ST chênh lên

Abstract

Right ventricular systolic dysfunction in patients with acute myocardial infarction is quite common and has a prognostic value in evaluating patients. The aim of the research is to evaluate right ventricular systolic function indices in patients with ST-elevation myocardial infarction (STEMI) and to identify related factors. A cross-sectional study of 72 STEMI patients showed results as follow: the mean of TAPSE (tricuspid annual plane systolic excursion), FAC (fractional area change), RVS’ (right ventricular systolic excursion velocity), RVFWSL (right ventricular free wall longitudinal strain) and RV4CSL (right ventricular 4 chamber longitudinal strain) were 20.04 ± 4.78mm; 44.98 ± 10.12%; 11.7 (10.4; 13.7) cm/s; -16.61 ± 8.60% and -13.28 ± 5.30%, respectively. FAC in anterior STEMI group was 46.92 ± 9.23%; significantly higher than FAC in non-anterior group 41.33 ± 10.75% (p = 0.02). The quatiles of TAPSE and RVS’ in complete-occluded culprit artery were 19.0 (17.4; 21.0) mm and 10.85 (9.97; 13.0) cm/s respectively, significantly lower than those in non-complete occluded culprit artery group, which were 20.7 (19.6; 23.3) mm and 13.2 (10.9; 15.5) cm/s, respectively (p = 0.01; p = 0.002). RV4CSL and RVFWSL were correlated negatively moderately with EF BP (r = -0.38; r = -0.30; p < 0.05) and correlated positively moderately with LVGLS (r = 0.42; r = 0.39; p < 0.05). TAPSE had a weak positive correlation with EF BP (r = 0.29; p < 0.05).