Comparison of right ventricular functions according to infarct localization using advanced echocardiographic methods in myocardial infarction with ST elevation
Objectives: In this study, we aimed to compare the effectsof infarct localization in patients with ST ElevatedMyocardial Infarction (STEMI) on the right ventricular(RV) functions by using advanced echocardiographicmethods.Materials and methods: A total of 89 patients withSTEMI were included into the study and patients weredivided to three groups as anterior, isolated-inferior andinferior+RV MI groups. In addition to standard echocardiographicmesurements, RV tissue doppler, RV EjectionFraction (RVEF), Myocardial performance index (MPI)and TAPSE measurements of all patients were performedbetween 24-72 hours after the event.Results: Compared to groups, RV functions in inferior MIwith RV involvement group were deteriorated. Tricuspidannular plane systolic excursion (TAPSE) value for theinferior MI with RV involvement (19±1mm) group werelower than those for Inferior MI group without RV involvement(23±1mm) and anterior MI (23±1mm) (p<0.05). TheRV MPI value for inferior MI group with RV involvement(0.76±0.14) were found to be higher than those for anterior(0.64±0.1) and inferior MI (0.56±0.1) group withoutRV involvement (p<0.05). Peak Sm (r = -0.35, p =0.01), TAPSE (r = -0.47, p<0.001) and RV EF (r = -0.46,p<0.001) showed a negative correlation with RV MPI value.Furthermore, RV tricuspid E/A rate (r = -0.19, p = 0.7)and RV free wall tissue doppler Em/Am rate (r = -0.26, p =0.01) displayed a negative correlation with RV MPI value.Conclusions: Use of advanced methods addition to theconventional echocardiographic methods in STEMI patients,could produce more valuable information to evaluateRV functions and provide a positive impact on treatmentstrategies.Key words: Acute myocardial infarction, right ventricle,echocardiography, TAPSE, MP
