Ampulla cardiomyopathy ('Takotusbo' cardiomyopathy)--reversible left ventricular dysfunction: with ST segment elevation
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Updated: Oct 17, 2026

A Surgical Method for Subvalvular Structure Intervention Through a Transaortic Approach in Normal Bama Pigs
Published on: March 13, 2026
S Kawai1, H Suzuki, H Yamaguchi
1Department of Cardiology, Juntendo University School of Medicine, Tokyo, Japan. chyabo@med.juntendo.ac.jp
Abstract:
The clinicopathologic findings of reversible ampulla-like ventriculogram of the left ventricle were studied in 8 elderly women and one middle-aged man. Their coronary arteriograms were normal, even in the 7 patients who had ST elevation on electrocardiogram. Coronary spasm was positive in only 2 of the 7 patients who received provocation tests. Biopsy specimens revealed focal myocyte injury. Normal coronary arteriograms during ST elevation and the presence of pathologic myocardial lesions were not consistent with a concept of stunned myocardium. The presence of myocardial lesions suggested that focal and disseminated myocardial damage had occurred.
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