Assessment of Left Ventricular Filling Pressure by Applying Artificial Intelligence Algorithms to Left Atrial Speckle-tracking Echocardiography

Inclusion Criteria: * ≥ 18 yo, * Signed informed consent to be part of this study, * No pregnancy, * Good acoustic window and patient cooperation to obtain good 2- and 3-dimensional datasets focused on left atrium (LA), Exclusion Criteria: * Unwillingness to be part of the study, * Patients with poor 2-dimensional imaging quality in ≥ 1 LA segment or lacking of a discernible R-R interval, which might preclude accurate strain measurements, * Patients with more than mild mitral valve heart disease, aortic regurgitation, left side valvular prosthesis or mitral valve repair, mitral annulus calcification (≥ 5 mm), * Patients with history or presence of atrial fibrillation (AF), supraventricular arrhythmias, ventricular paced rhythm, left bundle branch block (LBBB), * Patients taking diuretics or vasodilators (nitrates) on the day of the examination, which could alter loading conditions.