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Takeda, Hiroto; Owada, Kenji; Kobayashi, Atsushi; Matsumoto, Ken; Ujiie, Yuichi; Niitsuma, Takeo; Miura, Eisuke; Ohwada, Takayuki; Hirosaka, Akira; Maehara, Kazuhira; Maruyama, Yukio

doi:10.5105/jse.22.167

Cited by 2 publications

(4 citation statements)

References 19 publications

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“…Interestingly, adrenal insufficiency itself has been said to cause also abnormal electrocardiogram findings including QT prolongation and deep inverted T waves without apparent dysfunction of the cardiac wall, rarely resulting in ventricular fibrillation [21]. Walter et al first reported adrenal insufficiency producing various abnormal changes in the electrocardiogram: ST depression, inverted T waves and long QT intervals [22].…”

Section: /21mentioning

confidence: 99%

Torsade de Pointes Associated with Recurrent Ampulla Cardiomyopathy in a Patient with Idiopathic ACTH Deficiency

et al. 2009

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cured without relapse. This cardiomyopathy is often triggered by the exposure to emotional, psychological, or physical stress, and is sometimes complicated by various endocrine disorders such as anorexia nervosa [2], pheochromocytoma [3], or adrenal insufficiency [4,5]. A small number of previous reports have referred to ampulla cardiomyopathy caused by adrenal insufficiency, which resolved promptly after steroid hormone replacement therapy without severe involvement. We herein report a patient with torsade de pointes worsening to ventricular fibrillation associated with recurrent ampulla cardiomyopathy, who was rescued by cardiopulmonary resuscitation including cardiac defibrillation and later proven to suffer from idiopathic ACTH deficiency. So far, this is the first report describing adrenal insufficiency induced torsade de pointes complicated by recurrent ampulla cardiomyopathy. Abstract. We describe here a patient with torsade de pointes associated with recurrent ampulla cardiomyopathy, who was later proven to suffer from idiopathic acTh deficiency. a 70-year-old man was admitted to our hospital for bacterial pneumonia. A cardiac examination performed on admission revealed ampulla cardiomyopathy, which improved spontaneously as the pneumonia was cured. Two months after discharge, he was transferred to our hospital for relapse of the pneumonia. After the second admission, the pneumonia subsided with antibiotic treatment and his general condition ameliorated gradually. However, on the 20 th hospital day, he was found lying on the floor in a prone position in cardiopulmonary arrest. cardiac telemetry monitoring showed torsade de pointes worsening to ventricular fibrillation, and immediate cardiac defibrillation was performed. The electrocardiogram after successful defibrillation showed inverted T waves in the chest leads with long QT intervals, and subsequent emergent coronary catherization revealed the recurrence of ampulla cardiomyopathy. Thereafter, endocrinological examinations for the diagnosis of sustained hyponatremia demonstrated secondary adrenal insufficiency caused by idiopathic acTh deficiency. The cardiomyopathy resolved promptly after steroid hormone replacement without relapse as did the hyponatremia. Patients with ampulla cardiomyopathy or ventricular fibrillation without apparent etiology should be examined for adrenal function. If begun as soon as adrenal insufficiency is diagnosed, immediate steroid replacement therapy can prevent the deterioration and relapse of cardiac involvement.

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Section: /21mentioning

confidence: 99%

Torsade de Pointes Associated with Recurrent Ampulla Cardiomyopathy in a Patient with Idiopathic ACTH Deficiency

et al. 2009

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“…Though there are several experim ents on in-situ X-ray characterization of semiconductor growth, most of them are investigation on surface structures of the growth front [l-3]. Instead, we have been conducting ex-situ X-ray characterization of semiconductor heterostructures, from the view points of growth process dependence of the heterostructures, with X-ray CTR (crystal truncation rod) scattering measurements using synchrotron X-ray [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. It is because the in-situ characterization of the growth front does not give us the information of the heterostructure itself after all through the growth processes.…”

Section: Introductionmentioning

confidence: 99%

“…It is because the in-situ characterization of the growth front does not give us the information of the heterostructure itself after all through the growth processes. It implies that the heterostucture changes during the growth process due to the growth temperature itself, the change of the supply gases, and the continuous growth of an over-layer [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The X-ray CTR techniques have successfully been used for III-V compound semiconductors and their heterostructures [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], and also for GaN and related materials, including the investigation on the role of the low-temperature-deposited AIN buffer layer on sapphire and its best thickness [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Buried Heterostructure of Nitride Semiconductors Revealed by Laboratory Level X-ray CTR Scattering

Takeda¹,

Maeda²,

Mizuno³

et al. 2008

Trans. Mat. Res. Soc. Japan

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We set up a laboratory level X-ray CTR measurement system using a multilayer focusing mirror and a channel-cut asymmetric Ge double-crystal for a beam squeezing and an imaging plate as a 2D detector. Even though the intensity of the laboratory X-ray is by 700 times lower than that of the synchrotron X-ray, good enough signal/background ratios were achieved by the laboratory X-ray system for a reasonable measurement time of 100 minutes. This measurement system was applied to GaN/GainN/GaN heterostructures on sapphires, which were difficult to obtain a good signal/background ratio using synchrotron X-ray CTR measurements system, and reasonable CTR data were obtained. In distributions in GaN/GainN/GaN very different from those designed were obtained.

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Cited by 2 publications

References 19 publications

Torsade de Pointes Associated with Recurrent Ampulla Cardiomyopathy in a Patient with Idiopathic ACTH Deficiency

Torsade de Pointes Associated with Recurrent Ampulla Cardiomyopathy in a Patient with Idiopathic ACTH Deficiency

Buried Heterostructure of Nitride Semiconductors Revealed by Laboratory Level X-ray CTR Scattering

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