The indexed volume of the left atrium in the assessment of the severity of aortic stenosis in sinus rhythm

Introduction The size of the left atrium is a reliable way to estimate the elevation of left ventricular filling pressures in the absence of other causes of dilation. We hypothesize that the LA dilation assessed by its volume indexed to the body surface (LAVi) reflects the severity and duration of the aortic stenosis (AS) in sinus rhythm. Objective The interest of the volume of the left atrium in aortic stenosis. Method This is a prospective, single-center study from October 2017 to November 2020, on the register of patients followed for valvular heart disease, collected from the day hospital and echocardiography vacations in the cardiology department of the Ibn Rochd UH of Casablanca. Result During 3 years, out of 503 patients with valvular heart disease, 150 patients presented with RA, of which 53 (49%) were tight. The average age was 57.6 years with a sex ratio (M/F) of 0.7. On the electrical level, 55% of patients were in sinus rhythm, RBBB was found in 30% of cases, HVG in 15% and repolarization disorders in 12%. LVEF was altered in 17% of cases and aortic regurgittion was found in 48% of cases. The LA was dilated (LAV > 34 mL/m2) in 45% of patients with a mean LAVi of 38.7 mL/m2. HTP was found in 40% of cases. LAV was strongly correlated with LV systolic and diastolic diameters and volumes (all P  Conclusion An increase in LAVi in patients with sinus rhythm RA was associated with a poor prognosis, the study is still ongoing in order to establish a short- and long-term follow-up and to establish the mortality of our patients.