Ken Ishibashi

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BACKGROUND We assessed the accuracy of left ventricular end-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction (EF) using quantitative gated single-photon emission computed tomography (QGS) in comparison with echocardiography as the reference standard. We also assessed the effects of total perfusion deficit (TPD) on the accuracy of QGS(More)
BACKGROUND Recent studies have shown good correlations between echocardiography and Tl-201 gated single-photon emission computed tomography (SPECT) for the assessment of left ventricular volumes and ejection fraction. We assessed how left ventricular geometry affected correlations between these values measured by the 2 methods in patients with known or(More)
Residual risk of cardiovascular events after treatment with stain might be explained in part because patients have low levels of n-3 polyunsaturated fatty acids (PUFA). We examined how lipid-lowering therapy with strong statin affected serum PUFA levels in patients with coronary artery disease. The study population consisted of 46 patients with coronary(More)
BACKGROUND Left ventricular diastolic dysfunction is a sensitive and early sign of myocardial ischemia. We assessed whether mitral annular velocity reflected the severity of myocardial ischemia evaluated by single-photon emission computed tomography in patients with suspected coronary artery disease (CAD) and preserved ejection fraction. METHODS AND(More)
Mean platelet volume (MPV) is a well-established marker of platelet activation, and recent studies have shown that platelet activation is central to the processes in the pathophysiology of coronary artery disease (CAD). The study population consisted of 45 patients with stable CAD who underwent successful percutaneous coronary intervention (PCI) with(More)
BACKGROUND The angiographic no-reflow phenomenon after primary percutaneous coronary intervention (PCI) carries a poor prognosis in patients with ST-segment elevation myocardial infarction (STEMI). However, the type of plaque composition that associates with the angiographic no-reflow phenomenon remains unclear. METHODS A total of 44 patients with STEMI(More)
BACKGROUND Although the coronary artery calcium (CAC) score as measured with computed tomography (CT) is associated with cardiovascular mortality and morbidity in Western countries, little is known in Asian populations. METHODS AND RESULTS Three hundred and seventeen Japanese patients (205 men and 112 women) were followed in the study and they underwent(More)
BACKGROUND Angiotensin II receptor blockers (ARB) have been shown to reduce cardiovascular events in patients at risk. The effect of valsartan on outcomes after percutaneous coronary interventions (PCI) with bare-metal stents (BMS) was investigated. METHODS AND RESULTS The prospective, randomized study included 191 patients at 5 participating(More)
BACKGROUND Variable location of the orifice of the right adrenal vein appears to be associated with a poor success rate of sampling, especially in less experienced hands. We described the spectrum of the location of the right adrenal vein, and identified the relation of its location to body mass index in patients with primary aldosteronism. METHODS and(More)
BACKGROUND Primary aldosteronism (PA) is a most common cause of secondary hypertension. In PA, left ventricular hypertrophy (LVH) is more progressive than in any other cause of hypertension. Aldosterone-producing adenoma (APA) and idiopathic hyperaldosteronism (IHA) are major subtypes of PA. However there is little information concerned with differences of(More)