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Figure 3 Bar graph showing the sensitivity of exercise (Ex), dobutamine (Dob) and dipyridamole (Dip) in the patients with simple and complex lesion morphology. Sensitivity of dipyridamole and dobutamine was significantly higher (p < 0.01) in the group of patients with complex lesion morphology. There was a significant difference between all three stress echocardiography tests (p < 0.05) for simple lesion types while for complex lesions the difference was statistically significant (p = 0.014) only between exercise and dipyridamole.