The left atrium (LA) functions to transport oxygenated blood from the pulmonary veins (PVs) to the left ventricle (LV). LA hemodynamics has received much attention because thrombosis in the LA in pathological states. such as atrial fibrillation. is a major factor leading to thromboembolic stroke. https://www.roneverhart.com/Air-Music-Technology-Vacuum-Pro-Virtual-Instrument-p8397/