Japanese heart journal
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Japanese heart journal · Mar 1997
Dobutamine stress echocardiography for the detection of coronary artery disease and viable myocardium.
Dobutamine stress echocardiography has become a diagnostic tool for the evaluation of coronary artery disease and the detection of myocardial viability. In the diagnosis of significant coronary artery disease, it provides similar accuracy to exercise stress thallium-201 myocardial perfusion scintigraphy. Dobutamine stress echocardiography is also a promising modality for predicting the recovery of hibernating myocardium from contractile dysfunction after coronary angioplasty or bypass surgery. This article, reviews our recent clinical experience with the detection of coronary artery disease and viable myocardium by dobutamine stress echocardiography.
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Japanese heart journal · Nov 1995
Case ReportsCorrected transposition of the great arteries: dynamic three-dimensional echocardiography and volumetry. A new diagnostic tool in intensive care management.
Today, an increasing incidence of severe complications of cardiac malformations in adult patients must be expected since the life expectancy of such individuals is prolonged due to improved management. A 32-year-old woman with corrected transposition of the great arteries (CTGA) was admitted to the intensive care unit because of cardiac decompensation. ⋯ In CTGA uncommon complications may cause pulmonary edema. Using dynamic three-dimensional echocardiography to reveal function, volume parameters and the morphology of both ventricles and to exclude additional complications may be considered an adequate diagnostic tool for responding to this challenge.
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Japanese heart journal · Mar 1994
Estimation of total carbon dioxide contents in canine coronary arterial and venous whole blood samples.
We examined whether total carbon dioxide content (CCO2) estimation equations for human whole blood in the literature are applicable to canine coronary arterial and venous blood samples. PCO2 of the tested blood samples covered 19-52 mmHg; PO2 19-398 mmHg. Three CCO2 estimation equations developed by Kelman, Godfrey, and Douglas et al yielded CCO2 values over a range of 26.7-54.9 vol%, where plasma CCO2 values calculated by the Henderson-Hasselbalch equation ranged over 27.7-62.2 vol%. ⋯ They also closely correlated with plasma CCO2 values measured after hemolysis with saponin. We conclude that the human whole blood CCO2 estimation equations are applicable to canine coronary arterial and venous blood samples. These CCO2 equations may be used for canine cardiac metabolic studies.
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Japanese heart journal · Nov 1993
Sudden death may show a circadian time of risk depending on its anatomo-clinical causes and age.
The aim of this study was to determine whether the time of occurrence of sudden death exhibits a circadian rhythm depending on its different anatomoclinical causes. A longitudinal prospective investigation of 610 nonhospitalized subjects who died suddenly in the Emergency Room of Ferrara Hospital between January 1983 and December 1990 was conducted. All subjects underwent autopsy. ⋯ A statistically significant circadian rhythm was found for cases of sudden death due to acute myocardial infarction (peak at 15.28, n = 330, p = 0.013), pulmonary embolism (peak at 11.46, n = 56, p = 0.003) and arrhythmia (peak at 13.08, n = 291, p = 0.04). In Group A no significant circadian rhythm was found, whereas in Group B a significant rhythmicity was found for sudden death from cardiac causes at 13.32 (n = 249, p = 0.015), from myocardial infarction at 15.02 (n = 154, p = 0.018) and from arrhythmia at 13.07 (n = 122, p = 0.014). Different circadian patterns of onset of sudden death may be shown in various subgroups of patients, due not only to different pathophysiologic mechanisms but also to anatomo-clinical aspects.
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Japanese heart journal · Jan 1993
Case ReportsLate percutaneous extraction of an intracardiac catheter fragment.
A patient was found to have a mobile catheter fragment in the right atrium incidentally during echocardiography. On further investigation, it was learned that the catheter had been inserted 9 years earlier during surgery and had probably been broken during removal. The patient did not experience any symptoms during this period. The catheter was removed percutaneously without any complications using a system similar to the loopsnare catheter.