1082 LEFT VENTRICULAR FUNCTION ESTIMATION: WHEN VOLUMES MEASUREMENT IS NOT FEASIBLE

Abstract Background Contrast echocardiography is mainly performed for the assessment of global left ventricular (LV) function, ejection fraction (LVEF) and stroke volume (SV) thanks to improved visualization endocardial LV borders. Neverless in some patients estimation volumes could be difficult also with contrast LVEF can really hard. The aim study was find alternative methods function evaluation independent from assessment. Methods Patients who underwent a between October 2015 September 2022 were enrolled study. A complete transthoracic Sonovue then injected. End-diastolic end-systolic apex 4 2 chamber views, measured prior after injecting contrast. Left outflow tract diameter (LVOTd) LVOT velocity time integral traced order calculate VTI Stroke Volume (product cross sectional area VTI). SV obtained during traditional compared calculated as difference end-diastolic After intravenous bolus injection pulmonary transit (PTT) recorded agent's right ventricle view (seconds). PTT measures function: without Results 149 study, 86 had history CAD, 31 presented dilatative cardiomyopathy, 5 hypertrophic cardiomyopathy (HMC), 113 arterial hypertension, 37 diabetes. Medium BMI 28. main indications measurement EF exclusion thrombi apex. 126 patients. In same calculated. strong correlation (P value < 0.0001) found (Figure 1). PPT 74 patient 2) (P-value <0.048, p-value<0.006 p-value 0.046 respectively) found. Conclusion This demonstrates that, besides extremely poor acoustic windows, bedside echocardiography, contrast, used estimate using volume-independent like SV.