Akihiko Takahashi

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BACKGROUND Atherosclerotic plaques progress in a highly individual manner. The purposes of the Prediction of Progression of Coronary Artery Disease and Clinical Outcome Using Vascular Profiling of Shear Stress and Wall Morphology (PREDICTION) Study were to determine the role of local hemodynamic and vascular characteristics in coronary plaque progression(More)
BACKGROUND Few data are available on the clinical outcome of patients with acute coronary syndrome (ACS) complicated by refractory cardiogenic shock or cardiac arrest who receive percutaneous extracorporeal life support (ECLS). We investigated the in-hospital outcome and predictors of mortality in these patients. METHODS The investigation was a(More)
Coronary artery dominance influences the amount and anatomic location of myocardium that is perfused by the left or right coronary circulation. However, it is unknown whether coronary artery dominance also influences the distribution of coronary blood flow volume. The aim of this study was to evaluate volumetric coronary blood flow in 1,322 vessels from 496(More)
Intra-aortic balloon pump (IABP) counterpulsation is a useful hemodynamic assist device during complex percutaneous coronary intervention (PCI) in patients with poor left ventricular function; however, the presence of an abdominal aortic aneurysm poses a problem, because insertion via the femoral artery may cause distal embolism and aneurysm rupture. A(More)
BACKGROUND Erythropoietin (EPO) has been shown to have effects beyond hematopoiesis, such as prevention of cardiac apoptosis. The purpose of the current study is to examine the influence of the time-course change in the serum concentration of endogenous EPO on cardiac functions in the chronic phase in patients with acute coronary syndrome, who successfully(More)
OBJECTIVE The purpose of this study was to examine the efficacy and safety of method for retrieval of entrapped guidewire in stent-jailed side branch using a balloon catheter. BACKGROUND Guidewire entrapment in the side branch after main vessel stenting is an infrequent but potentially serious complication of bifurcation lesion treatment. Entrapped wire(More)
BACKGROUND We determined the in-hospital and the long-term outcomes of primary percutaneous coronary intervention (PCI) for acute left main coronary artery (LMCA) occlusion. METHODS Between 1988 and 2009, 72 patients with acute myocardial infarction (AMI) underwent primary PCI for unprotected LMCA occlusion. The short- and the long-term outcomes of(More)
OBJECTIVES The aim of this study was to evaluate the safety and effectiveness of a 0.010-inch guidewire and a balloon catheter for treatment of chronic total occlusion (CTO). BACKGROUND Pathological studies have shown that 60-70% of CTO lesions have microchannels of sizes equal to or less than 0.010 inch. METHODS The PIKACHU registry is a prospective,(More)
OBJECTIVES To evaluate the safety and feasibility of virtual 3 Fr (V3), sheathless 5 Fr percutaneous coronary intervention (PCI). BACKGROUND A small-diameter guiding catheter (GC) makes less-invasive PCI possible. The V3 is an extremely slender PCI system; however, the outcome of using this system has not yet been determined. METHODS The V3 registry is(More)
BACKGROUND Old age is a prognostic risk factor for patients with ST elevation acute myocardial infarction (STEMI); however, few data exist describing STEMI patients aged over 90 years. METHODS We retrospectively evaluated the clinical indices and outcomes of 282 consecutive STEMI patients who underwent primary percutaneous coronary intervention (PCI) in(More)