Characteristics of systolic function assessment Characteristics of deformation indexes: Using the control group indicators with lower quartile values for comparison, we found that the deformation indexes decreased as follows: the number of patients 20 with GLS decreased 37, 9%, GCS decreased, accounting for 15, 8%, GRS decreased by 12, 6%, while the number of patients with bottom rotation increased only 11, 6%, and only 6, 3%.