Publications by authors named "Daita Kobayashi"

We report the case of a 76-year-old woman with an incomplete atrioventricular septal defect and severe congestive heart failure who underwent surgical repair. Surgical intervention involved mitral valve repair and patch closure of the ostium primum defect, resulting in a favorable postoperative course. Successful outcomes support surgery as a reasonable treatment option owing to its significant improvement in postoperative quality of life, even in elderly patients with left atrioventricular valve degeneration.

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This work introduces a perspective-corrected video see-through mixed-reality head-mounted display with edge-preserving occlusion and low-latency capabilities. To realize the consistent spatial and temporal composition of a captured real world containing virtual objects, we perform three essential tasks: 1) to reconstruct captured images so as to match the user's view; 2) to occlude virtual objects with nearer real objects, to provide users with correct depth cues; and 3) to reproject the virtual and captured scenes to be matched and to keep up with users' head motions. Captured image reconstruction and occlusion-mask generation require dense and accurate depth maps.

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Pulmonary valve stenosis and regurgitation can occur in the distant stages after intracardiac repair of tetralogy of Fallot (TOF). Aortic regurgitation (AR) can also occur, although it is rare in postoperative patients. However, there are few reports of simultaneous replacement of the pulmonary and aortic valves in young patients after intracardiac repair of TOF, and there are no clear guidelines for selecting a valve prosthesis in such patients.

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While isolated iliac artery aneurysm is rare, its rupture can lead to complete circulatory collapse and possibly death. Herein, we report a case of rupture of a large isolated aneurysm of the right common iliac artery that led to circulatory collapse and rapid endovascular repair saved the patient's life.

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A Kommerell's diverticulum is a rare congenital aortic arch anomaly associated with a high rate of aortic rupture or dissection. Therefore, surgical or endovascular repair should be considered early. A 64-year-old man was incidentally found to have an aortic arch anomaly, Kommerell's diverticulum, with a right aberrant subclavian artery and distal arch aneurysm.

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Minimally invasive cardiac surgery has recently become widespread because it has few disadvantages. However, lung hernia has been reported as a rare complication of minimally invasive cardiac surgery (MICS), and normally requiring additional surgical procedures. We describe herein a case of manual repositioning of lung hernia after MICS.

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A 79-year-old man with a heavy smoking history presented with threatened lower limbs due to acute exacerbation of peripheral artery disease (PAD). He underwent emergent distal bypass surgery for the right leg and external iliac stenting for the left leg. Fatal coronary artery spasm (CAS) with ST segment changes on electrocardiography was observed 28 h after the procedures, resulting in cardiac arrest.

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Since its introduction in Japan in 1980, the extracorporeal left ventricular assist device has been used as a bridge to the recovery of cardiac function or to heart transplantation by many institutions. In this case report, we describe a 23-year-old female with peripartum cardiomyopathy. She had a persistently low cardiac index despite intensive care with intravenous inotropes, intra-aortic balloon pumping and extracorporeal membrane oxygenation; thus, we implanted an extracorporeal left ventricular assist device.

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We report a case of total arch replacement in a patient who suffered repeated cerebral infarctions due to unstable plaque simultaneously in the innominate and left subclavian arteries.

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