**11. Strain imaging and aortic valve surgery/intervention**

The contributions of LV strain analysis in the surgical or interventional management of patients with aortic stenosis has been extensively documented. The following statements summarize the conclusions of several studies addressing the use of strain imaging as it relates to valve replacement or intervention in patients with aortic stenosis.


In summary LV GLS can detect subclinical myocardial dysfunction in patients with severe aortic stenosis, and progressively worsens with increasing aortic stenosis severity. Impaired LV GLS is independently associated with increased mortality in high-gradient aortic stenosis, in low-flow, low-gradient severe aortic stenosis with preserved LVEF, and in low-flow, low-gradient severe aortic stenosis with reduced LVEF. Strain analysis of specific myocardial sublayers may add value to the evaluation of strain in aortic stenosis. Coronary artery disease and hypertension produce additional variables in strain analysis that need to be considered. Finally, there is increasing support for the use of strain imaging to determine the need and timing for aortic valve surgery or intervention in patients with aortic stenosis.
