P1550 Detection of symptom related coronary arteries in patients with coronary artery disease by 4D stress echo with adenosine triphosphate

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Abstract Background In previous publications, we have proposed new algorithm of pharmacologic Stress Echo with possibility of stepwise adenosine triphosphate (ATP) i/v dose increase (Figure 1). Purpose In this study we decided to compare the effectiveness of detection of symptom related coronary arteries in patients with coronary artery disease (CAD) by ATP 4D Stress Echo of left ventricle (LV) and a) traditional visual evaluation of LV segmental hypokinesis b) Automatic Function Imaging (AFI) technology longitudinal LV strain (LS) analysis. Material and methods. 26 patients with CAD (male 24, mean age 63.1 ± 7.5 years, single vessel obstructive disease 7, multivessel - 19) underwent ATP LV 4D Stress Echo (Vivid E95, GE). Number of cases when it was possible to detect symptom related arteries by visual analysis of LV segmental hypokinesis and by AFI LV LS analysis were compared. Results In 11 (42.3%) patients expansion of existing hypokinetic areas and appearance of new LV segments with hypokinesis during stress test were detected by visual analysis. Using AFI technology expansion of initial areas of LS disturbances and appearance of new LV segments with LS disturbances were found in 21 (80,7%) patients (р=0.0044). Conclusion Utilization of AFI LV LS analysis during ATP LV 4D Stress Echo significantly increases the frequency of symptom related coronary arteries detection in patients with CAD. Abstract P1550 Figure1

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