CMR imaging and left atrioventricular coupling index
LACI, NSTEMI
The median LACI of the study population was 21.4% (15.9%–29.2%). There was no difference of LACI between patients with STEMI or NSTEMI (p = 0.12). Underlying parameters of LA EDV and LV EDV significantly correlated (r = 0.4, p < 0.001). There was no correlation of LACI with LV functional parameters (GLS: r =—0.001, p = 0.96; LVEF: r = -0.03, p = 0.32) but with LA functional parameters (LA total strain r = -0.58, p < 0.001, LA emptying fraction (LAEF): r = -0.67, p < 0.001). A detailed overview of CMR parameters is displayed in Table Cardiac magnetic resonance resultsValues are displayed as median (interquartile range). Two patients were lost to follow-up regarding MACE. P-values were calculated for the comparison between patients with and without MACE using the Mann–Whitney U test. Numbers in bold indicate a statistical significance in differenceEDVI: end-diastolic volume index; ESVI: end-systolic volume index; GLS: global longitudinal strain, LA: left atrial, LACI: left atrioventricular coupling index, LVEF: left ventricular ejection fraction
