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Table 2 Changes in apical wall motion in relation to dobutamine-induced obstruction in the population studied.

From: Dobutamine stress echocardiography for assessing the role of dynamic intraventricular obstruction in left ventricular ballooning syndrome

 

Dynamic obstruction

(n = 6)

No dynamic obstruction

(n = 15)

Biphasic response

3

0

Direct impairment

1

0

No changes

1

1

Partial improvement

1

6

Complete normalization

0

6

Normal baseline wall motion

0

2