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Figure 4 (A) Correlation between exercise capacity (metabolic equivalents [METs]) and the ratio of early diastolic transmitral velocity to early diastolic tissue velocity (E/E’) both at rest (left) and with exercise (right). (B) Receiver-operator characteristic curve showing sensitivity and specificity of different E/E’ values both at rest (left) and with exercise (right) to predict exercise capacity (<8 METs).