Avicena LLC

The purpose of this study is to document the utility of the Vivio System in quantifying LVDP in healthy volunteers.

The purpose of the study is to determine the relationship between non-invasive measurement of left ventricular diastolic pressure (LVDP) using the Vivio System, compared with invasively measured LVDP via direct measurement during left heart catheterization.

Avicena is developing new non-invasive methods (hardware and software) for diagnosis of a variety of heart conditions. This study is designed to compare data obtained using Avicena's device, the Vivio, to data obtained from transthoracic echocardiography (TTE) for the diagnosis of moderate-to-severe aortic stenosis. Aortic stenosis (AS) is a disease of the valve (aortic valve) that separates the left ventricle of the heart from the aorta. When AS is severe, the heart cannot pump adequate amounts of blood into the arterial tree. AS is often silent until the disease is severe. This study compares a rapid test using Vivio to a longer and more expensive test that is the current gold standard for diagnosis of AS, TTE.