BACKGROUND: Recently, several cases of @entity661 without involvement of the LV apex have been reported. However, there has been no assessment of the clinical features of this novel presentation or comparison with the typical transient LV @entity661 . METHODS: We evaluated 47 @entity1 diagnosed with transient @entity661 . The diagnostic criteria were (1) transient @entity910 / @entity910 beyond a single major coronary artery vascular distribution, (2) absence of significant @entity453 on coronary angiograms, and (3) new electrocardiographic changes. RESULTS: Thirty-one @entity1 showed classic LV @entity661 , and 16 showed atypical @entity661 without involvement of the LV apex (nonapical ballooning). Clinical presentations and inhospital courses of illness were mostly similar among @entity1 with nonapical ballooning (group NA) and @entity1 with @entity661 (group A). However, on admission, there were fewer @entity1 with @entity1455 or @entity3126 in group NA than in group A (19% vs 48%, P = .048). Group NA @entity1 were relatively younger than group A @entity1 (median ages 58 vs 70 years, P = .02), and fewer @entity1 had coronary risk factors in group NA than in group A (38% vs 77%, P = .01). On electrocardiogram, T-wave inversion was noted less frequently in the NA group than in the A group (69% vs 97%, P = .01). CONCLUSIONS: Transient @entity661 and classic LV @entity661 may be different manifestations of a single syndrome. They appear to have differences in the severity of @entity712 , in @entity1 characteristics, and in electrocardiographic change.

The clinical features of transient XXXX : comparison with @entity661 .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity712 :: ('MESH:D006333', 'Disease') :: ['heart failure'] @entity3126 :: ('MESH:D011654', 'Disease') :: ['pulmonary edema'] @entity910 :: ('MESH:D004409', 'Disease') :: ['dyskinesia', 'akinesia'] @entity661 :: ('MESH:D054549', 'Disease') :: ['LV ballooning', 'LV ballooning syndrome', 'LV nonapical ballooning syndrome', 'apical ballooning syndrome', 'apical ballooning', 'atypical left ventricular (LV) ballooning syndrome'] @entity453 :: ('MESH:D003324', 'Disease') :: ['coronary artery disease'] @entity1455 :: ('MESH:D012770', 'Disease') :: ['cardiogenic shock']
@entity661 :: (MESH:D054549,Disease) :: ['left ventricular nonapical ballooning syndrome']
