Figure 2.

Exercise Stress Echocardiography Protocol, modified from Picano et al. New clinical standard of integrated quadruple stress echocardiography with ABCD protocol. Cardiovascular ultrasound 2018. 16:22. A: assynergies, E: ejection fraction, F: diastolic function, G: peak aortic gradient, P: pulmonary pressure, S: strain, * CR: contractile reserve was considered to be present when exercise to rest ejection fraction ratio measured via Simpson method was ≥5 absolute points, or >2 absolute points when measured via GLS. ECG: electrocardiogram.