Yutaka Hirano

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BACKGROUND In Western countries, many studies have shown that among healthy people moderate drinkers have a lower incidence of cardiovascular events than abstainers and heavy drinkers. However, it is not clear whether this is true in patients with a healed myocardial infarction (MI). METHODS AND RESULTS In the present study cardiovascular events were(More)
OBJECTIVES Cardiac catheterization is increasingly used for the diagnosis or treatment of coronary artery disease. Previous studies that revealed the incidence of complications such as arteriovenous fistula and pseudoaneurysm were based on retrospective analysis of cohorts referred to vascular surgery. This study was designed to determine the incidence of(More)
BACKGROUND Diuretics are the most prescribed drug in heart failure (HF) patients. However, clinical evidence about their long-term effects is lacking. The purpose of this study was to compare the therapeutic effects of furosemide and azosemide, a short- and long-acting loop diuretic, respectively, in patients with chronic heart failure (CHF). METHODS AND(More)
Calcific aortic valve disease (CAVD) is the most common etiology of acquired valvular heart disease, and hypertension is a principal underlying disease. The Japanese Aortic Stenosis Study (JASS) Retrospective Analysis is a retrospective observational study to clarify the prognostic factors for progression of CAVD in Japanese. Data from 556 subjects who met(More)
OBJECTIVE The menstrual cycle-related changes in clinical laboratory values were analysed by use of data obtained in the Asian multicentre study aimed at derivation of common reference intervals for 85 major clinical laboratory tests. METHODS Among 1876 healthy female volunteers, 893 had regular menstruation. They were classified into five groups(More)
A 74-year-old man was admitted to our hospital complaining of dyspnea. Parasternal transthoracic echocardiography showed a quadricuspid pulmonary valve above the aortic valve and a hypoplastic accessory cusp between the right and left cusps of the pulmonary valve. The pulmonary valve ring diameter was normal (26 mm) but the transvalvular peak velocity was(More)
BACKGROUND Exercise echocardiography is an effective means of noninvasively detecting coronary artery disease (CAD), and hand-carried cardiac ultrasound (HCU) devices are now being used to diagnose CAD in emergency rooms and at bedsides. OBJECTIVE To compare the efficacies of exercise echocardiography with an HCU device (EchoCG-HCU) and exercise(More)
OBJECTIVES We assessed the usefulness of hyperventilation and cold-pressor stress echocardiography in the diagnosis of vasospastic angina compared with that of iodine-123 metaiodobenzylguanidine (123I-MIBG) myocardial scintigraphy. BACKGROUND Various noninvasive methods have been used to detect vasospastic angina, but they are not very sensitive in the(More)
This is to demonstrate a new 2D-ultrasonographic technique which enabled clear resolution of deformed valves, visualization of venous reflux and quantitation of valve incompetence. In a 59-year-old Japanese female patient, ultrasonography was done using Aplio, Toshiba Medical Systems Co., Japan, equipped with 8 MHz linear probe capable of differential(More)