== Aortic Stenosis == [[ https://www.onlinejase.com/article/S0894-7317(20)30445-4/fulltext | Prognostic Importance of Left Ventricular Global Longitudinal Strain in Patients with Severe Aortic Stenosis and Preserved Ejection Fraction - JASE 2020 ]] * GLS is often impaired despite preservation of LVEF in severe AS and no or mild symptoms. * GLS < 15% is associated with an increased risk of mortality during follow-up in this population. * GLS provides added prognostic information over echocardiographic predictors in AS. * Detection of myocardial dysfunction by GLS < 15% can aid in risk assessment.