• 제어로봇시스템학회:학술대회논문집
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• 1987.10b
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• pp.684-689
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• 1987

Digital Subtraction Angiography(DSA) technique has been widely used to detect vascular diseases and hemodynamic parameters noninvasively. However, there are few quantitative studies on the factors in fluencing the resultant DSA image quality. In this paper, several important factors are suggested to improved the DSA image quality based on mathematical analysis. Experimental DSA images for different filters are shown and also discussed the difference between original and processed image quality.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2008.05a
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• pp.132-132
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• 2008

• Journal of Chest Surgery
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• v.21 no.1
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• pp.116-120
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• 1988

From July 1986 to June 1987, five patients were underwent IABP [intra aortic balloon pulsation] because of sever left heart failure in spite of maximum medication. These patients were reviewed as prophylactic IABP [1 patient], During operation [3 patients] and postoperative IABP [1 patients]. All patients were showed stable hemodynamic status with improved LV function during and after IABP. there was no IABP related complication or mortality. Advanced disease needs more effective methods of mechanical circulatory assistance and heart replacement.

• Journal of Chest Surgery
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• v.29 no.6
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• pp.655-659
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• 1996

Primary cardiac tumors are known to be rare. Of the benign primary tumors, rhabdomyoma predominates in neonates and infants. Tuberous sclerosis is found in hall of the patients with rhabdomyomas. Rhabdomyomas demonstrate benign pathological characteristics and may regress spontaneously that resection of the intracavitary obstructing portion of these tumors are recommended. We performed resection of intraatrial rhabdomyoma which had been obstructing mitral valve orifice and caused heart failure in a neonate. Postoperatively, fungal endocarditis developed and after 3 days, rapid growth and extension of the vegetation in the aorta obstructed the flow through the ascending aorta and resulted in hemodynamic deterioration.

• Proceedings of the KSME Conference
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• 2004.04a
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• pp.1987-1992
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• 2004

Hemodynamics behavior of the blood flow is influenced by the presence of the arterial stenosis. If stenosis is present in an artery, normal blood flow is disturbed. In the present study, characteristics of steady and pulsatile flow of non-Newtonian fluid, the effects of stenosised geometry are analyzed by numerical simulation. One interesting point is that non-symmetric solutions were obtained at severity stenosis, although the stenosis and the boundary condition were all axisymmetric.

• Proceedings of the Ginseng society Conference
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• 2003.12a
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• pp.7-9
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• 2003

• Journal of Chest Surgery
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• v.28 no.7
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• pp.721-725
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• 1995

One case of surgical correction of a large aortopulmonary window in a 4 months old female is reported in detail. Clinical symptoms consisted of fatigue when feeding and recurrent upper respiratory tract infection. Under cardiopulmonary bypass with moderate hypothermia and cardioplegic arrest of the heart, the aortopulmonary window was approached through a vertical incision at the anterior wall of window itself. The defect was closed with pericardial patch using continuous suture posteriorly and sandwitch technique anteriorly. The patient was weaned from the cardiopulmoanry bypas without hemodynamic problem and postoperative course was uneventful. This surgical technique is recommandable as it provides good exposure of the defect and can be performed easily and safely.

• Journal of Korean Neurosurgical Society
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• v.39 no.6
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• pp.464-466
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• 2006

Cephalohematoma with epidural hematoma[EDH] is a known complication of birth trauma and is usually best managed by observation only. However, this complication may jeopardize a neonatal life because of cranial compromise and hemodynamic instability. It should also be recognized that surgical intervention confers undoubted benefits on patients in some cases. We report a case of massive EDH with cephalohematoma and linear skull fracture, successfully treated with a craniotomy and evacuation of the hematoma.

• Journal of Yeungnam Medical Science
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• v.36 no.3
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• pp.254-259
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• 2019

Pheochromocytoma (PCC) is a rare catecholamine-producing tumor with the incidence in hypertension of 0.1-0.6%. PCC crisis is an endocrine emergency that can lead to hemodynamic disturbance and organ failure such as catecholamine-induced cardiomyopathy. The circulatory collapse caused by it often requires mechanical support. The author reports an unusual case in which a patient who previously underwent surgery for malignant PCC developed catecholamine-induced cardiomyopathy, and successfully recovered using extracorporeal membrane oxygenation.

• Journal of Chest Surgery
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• v.47 no.4
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• pp.333-343
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• 2014

Background: A preclinical study was conducted for evaluating a valved conduit manufactured with a glutaraldehyde (GA)-fixed bovine pericardium treated using an anticalcification protocol. Methods: Bovine pericardia were decellularized, fixed with GA in an organic solvent, and detoxified. We prepared a valved conduit using these bovine pericardia and a specially designed mold. The valved conduit was placed under in vitro circulation by using a mock circulation model, and the durability under mechanical stress was evaluated for 2 months. The valved conduit was implanted into the right ventricular outflow tract of a goat, and the hemodynamic, radiologic, histopathologic, and biochemical results were obtained for 6 months after the implantation. Results: The in vitro mock circulation demonstrated that valve motion was good and that the valved conduit had good gross and microscopic findings. The evaluation of echocardiography and cardiac catheterization demonstrated the good hemodynamic status and function of the pulmonary xenograft valve 6 months after the implantation. According to specimen radiography and a histopathologic examination, the durability of the xenografts was well preserved without calcification at 6 months after the implantation. The calcium and inorganic phosphorus concentrations of the explanted xenografts were low at 6 months after the implantation. Conclusion: This study demonstrated that our synergistic employment of multiple anticalcification therapies has promising safety and efficacy in the future clinical study.