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Figure 1 Coronary flow velocity response to mental stress in patients with coronary artery disease (CAD) compared with patients free of angiographic CAD. Average peak velocity (vertical axis) increased significantly during mental stress in patients without CAD (32.8%, p = 0.008), whereas no such increase occurred in patients with CAD (6.4%; p = >0.10; pgroup x response interaction = 0.006). No group differences (CAD vs. non-CAD) were found in pretask resting velocity measures (29.7 ± 17.9 cm/s vs. 30.4 ± 17.5 cm/s, respectively, p > 0.10).
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