Nguyen, D.H. and Nguyen, T.T. 2026. Assessment of left ventricular global longitudinal strain in patients with severe aortic valve stenosis before and after surgery using 2d speckle-tracking echocardiography. The Vietnam Journal of Cardiovascular and Thoracic Surgery. 54, (Jan. 2026), 116 - 132. DOI:https://doi.org/10.47972/vjcts.v54i.1644.