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BACKGROUND The new evolving multidetector computed tomography (MDCT) is thought to be promising in imaging of coronary disease. We compared the evaluating power of MDCT to that of conventional coronary artery angiogram in patients with coronary artery bypass grafting surgery. METHODS From April 2002 to December 2003, 50 patients underwent both MDCT and(More)
The mental strain of a cardiac surgeon may differ when he performs coronary surgery from and when he only assists in performing coronary surgery. In 50 selected cases of on-pump heart arrested coronary artery bypass grafting (CABG), an attending-consultant surgeon performed 30 procedures of CABG (Group A) and an attending-consultant surgeon supervised the(More)
BACKGROUND A primary limitation of using transit time flow measurement to predict early graft failure in coronary artery bypass grafting has been the lack of cutoff values for objective criteria. METHODS We analyzed a total of 261 grafts that were evaluated by intraoperative transit time flow measurement and underwent early postoperative coronary(More)
To examine blood flow after the placement of a Blalock-Taussig shunt, three complex T-figure models were developed according to shunt size and the degree of pulmonary artery hypoplasia. With the use of computational fluid dynamics, the net energy loss and wall shear stress were calculated under pulsatile conditions. We calculated that the 5-mm shunt carried(More)
In search of an optimal anastomosis conformation in coronary artery bypass grafting surgery and flow visualization, three-dimensional simulation of the anastomosis has been developed with the use of computational fluid dynamics. To simulate the surgery, a Y-figure model with proximal stenosis was developed in three cases according to angles ranging from 10°(More)
We sought to investigate the effects of the left internal mammary artery anastomosed to the left anterior descending artery for improving mid-term outcome in patients with severe left ventricular dysfunction. Twenty consecutive coronary artery bypass grafts performed by a single surgeon for less than 35% ejection fraction patients were reviewed(More)
OBJECTIVE It is widely accepted that both valve and cardiac functions are closely correlated. In order to investigate the relationship between the valve and cardiac functions, we developed a model of an isolated working heart with crystalloid perfusate in swine. We investigated the feasibility of this model to evaluate the precise left ventricular function(More)