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Biomedical subjects

Toshihiko Takamoto

Publications and source records attributed to Toshihiko Takamoto.

2 recordsLinked to original sources

Impending paradoxical cerebral embolism in a patient with atrial septal aneurysm.

There is increasing emphasis on the role of interatrial septal abnormalities, including patent foramen ovale and atrial septal aneurysm, in the genesis of stroke. However, a transseptal thrombus located in both atria is rarely visualized by echocardiography or other cardiac imaging techniques. It is also difficult to prove the mechanism of stroke in most clinical settings. In the present case of impending paradoxical cerebral embolism, the thrombus penetrating the atrial septal wall was visualized by transesophageal echocardiography.

Aged↗

Reversible left ventricular dysfunction "takotsubo" cardiomyopathy associated with hyperthyroidism.

Myocardial stunning with hyperthyroidism is rare. A 79-year old woman with hyperthyroidism was admitted to our hospital complaining of palpitations due to paroxysmal atrial fibrillation. An echocardiogram showed akinesis of the apical wall which was not observed 2 weeks before admission. Cardiac catheterization performed in the acute phase showed normal coronary arteries and no evidence of provocative spasms. The wall motion abnormality disappeared entirely after 1 week in hospital. We report a case of transient left ventricular dysfunction, so called "takotsubo" cardiomyopathy, associated with hyperthyroidism.

3-Iodobenzylguanidine↗