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16S rRNA 유전자 염기서열 분석법으로 확진한 Staphylococcus lugdunensis에 의한 감염성 심내막염 1예
하영은,류성열,고관수,주은정,박소연,김현아,임민희,강철인,정두련,송재훈,박표원,백경란 대한감염학회 2011 Infection and Chemotherapy Vol.43 No.4
Staphylococcus lugdunensis is a Gram-positive, coagulase-negative Staphylococcus (CNS) species that is found as a skin commensal and has been implicated in fulminant invasive diseases such as infective endocarditis. S. lugudunensis infections resemble Staphylococcus aureus infections in terms of virulence, tissue destruction and clinical course. Although correct identification and determination of the susceptibility profile are important, some commercial systems may misidentify S. lugdunensis . We report a case of native valve infective endocarditis caused by S. lugdunensis , which was misidentified by the Vitek 2system but identified correctly by 16S ribosomal RNA (rRNA) gene sequencing in a 72-year-old male patient. The patient had multiple vegetations on his mitral valve, and the largest one was found on the posterior mitral valve leaflet. It was 2.5cm in size and hypermobile. Diffuse valvular abscess was also observed. He had persistent bacteremia for appoximately 8 days, which was resolved after immediate surgery and antibiotic therapy. When a patient with severe sepsis syndrome grows S. aureus or CNS other than S. lugdunensis on a commercial automatic culture system, the possibility of S. lugdunensis should be considered and further confirmatory testing such as 16S rRNA sequencing may be very useful.
부신피질기능저하증으로 처음 발현한 일차성 항인지질항체 증후군 1예
하영은,고은미,김경희,김민영,안중경,차훈석 대한류마티스학회 2008 대한류마티스학회지 Vol.15 No.1
Primary adrenal insufficiency is one of the rare clinical manifestations of antiphospholipid antibody syndrome. The pathogenesis is mainly ascribed to the hemorrhagic infarction secondary to thrombosis. We describe a 19-year-old man who developed symptoms of adrenal insufficiency and then was diagnosed of primary antiphospholipid antibody syndrome, which is the first reported case in adult patients in Korea. The possibility of adrenal failure should be considered in the management of antiphospholipid antibody syndrome and also, when primary adrenal insufficiency is accompanied by no definite etiology, the antiphospholipid antibody syndrome should be considered as a possible etiology.
하영일,임홍재 대한신경외과학회 1990 Journal of Korean neurosurgical society Vol.19 No.7
The authers report a case of intracerebral extraventricular cyst of possible neuroectodermal origin, presenting as a right frontotemporoparietal mass lesion which has no communication with the subaracnhnoid space or ventricular system. A 4 months old male patient recovered rapidly after partial removal of cystic wall, cystoventriculostomy and cystoperitoneal shunt. The pathogenesis and principles of diagnosis and surgical management of this rare lesion is discussed
하영일,임홍재 대한신경외과학회 1990 Journal of Korean neurosurgical society Vol.19 No.4
The authors report a case in which a cerebral arteriovenous malformation (AVM'S) disappeared completely and spontaneously within 7 years without bleeding episodes or surgical intervention. During the interval, he has been completely asymptomatic and had received no treatment except anticonvulsant medication for 6 months. There was no more epilepsy and mild muscular atrophy in the right lower extremity. A similar case has previously been described and is discussed briefly along with other cases of complete AVM'S regression.
봉합을 이용한 두개강내 동맥류 포장술 치험 : 술기 증례 Technical Note
하영일,송관영,조창성,김충현 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.1
Several strategies exist for treating unclippable aneurysm, including intravaxular techniques, proximal occlusion of the parent artery or trapping of the aneurysm, microsurgical bypass of the involved arterial segment and reinforcement of the aneurysmal wall. Reinforcement or wrapping is frequently used when the other techniques are thought to be unsafe. We report a technical modification of the traditional wrapping technique for treatment of the fusiform aneurysm of the internal carotid artery, which includes reinforced Daron-patch with traction sutures to the adjacent dura to prevent aneurysmal rupture and further expansion.
소아 터어키鞍 周圍部에 발생한 연골상 脊索腫 : 증례 보고 Case Report
하영일,임흥재,김충현 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.5
An unusual case of suprasellar chondroid chordoma in childhood is reported. The patient a 14-year old boy, presented with total blindness of the left eye which was initially diagnosed as primary optic nerve atrophy. The frontotemporal craniotomy was performed and irradiated postoperatively. Intracranial chordomas in children are rare especially in chondroid varient of the classical chordoma. We reviewed the literatures and stressed this rare case in aspects of the treatment, prognosis and pathological characteristics.
하영일,조해동,유영락,김남규,정환영 대한신경외과학회 1981 Journal of Korean neurosurgical society Vol.10 No.2
The purpose of this study on the surgical results for lumbar intervertebral disc herniation is to analyze the unique feature of the series which seems to be sufficient to represent Korean patients suffering from these diseases. A total of 812 lumbar discectomies had been performed from May, 1972 to December, 1978 at Hanyang University Hospital. The most outstanding unique feature was the level of the lesion. The L₄-L_(5), interspace was affected in 87.6%. while the most of the other series showed almost same incidence between L₄-L_(5), and L_(5)-S₁, interspaces. The results of this analysis are as follows: 1) The incidence ratio of male to female was 1.3: 1. 2) Most were in the 4th and 5th decade (53.5%). The duration was over one year in 64.6% of cases. 3) Traumatic origin was 37.8% of cases. Post-delivery, convulsive and unknown etiology were 2.2%, 0.7% and 59.3% of cases, respectively. 4) The level of the lesion was predilected at L₄-L_(5) interspace with the incidence of 87.6%, while L_(5)-S₁, interspace was affected in 25.4% of cases. Single lesions were 70.8% and the multiple 29.2% of cases. 5) False positive findings of myelogram were 1.2% of cases. 6) Surgical results were gratifying in 92.3% of cases. 7) The incidence of postoperative complications was 3.3% of cases, which were mainly stitch abscesses. 8) The 7 out of 812 cases were associated with spinal tumors.
두개강내 세균성 동맥류 : 증례 보고 Case Report
하영일,임홍재,김충현 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.9
This case of a ruptured, infected intracranial aneurysm is reported. A 19-year-old female patient was transferred to our hospital due to large intracerebral hematoma in the right posterior parietal area with the marked mass effect. Cerebral angiograms demonstrated, beyond the vascular stretching due to the hematoma, a smal vascular mass situated on the distal parietal branch of the right middle cerebral artery. She was operated on the 3rd day after admission; a small vascular mass, almost thrombosed, was discovered and totally removed after evacuation of the hematoma. Cardiac manifestation including the echocardiogram was negative. Cultures of the blood, hamatoma evacuated during craniotomy and intra-aneurysmal thrombi were also negative at all. Postoperative angiograms revealed no newly developed vascular mass and follow-up course for 10 months has been uneventful. Different treatments of intracranial myctic aneurysms are finally reviewed and a therapeutic approach is discussed.
중소기업의 외부 네트워킹이 생산설비 관리, 신제품개발 전략 및 재무성과에 미치는 영향; 과학기술분야 출연(연) 충청권 파트너쉽 기업을 중심으로
하영임 (사)디지털산업정보학회 2023 디지털산업정보학회논문지 Vol.19 No.2
This study is to confirm whether SMEs can manage production facilities well and receive help in establishing new product development strategies if they actively engage in external networks. And under this influence, it is to check whether sales growth and financial performance improve. After reviewing the literature and theory, an empirical analysis using the questionnaire method was conducted to verify the research model. To verify statistical significance, programs 'SPSS 20.0' and 'Smart PLS 2.0' were used. The results of the study are summarized as follows. First, the higher the level of technical cooperation external networking of SMEs, the higher the level of management of their production facilities and new product development strategy was confirmed. Second, it was confirmed that the higher the level of production facility management and new product development strategy of SMEs, the higher their financial performance. Third, among the external networking levels of SMEs, the factor that has the greatest influence on management level of production facilities was identified as degree of participation in human network activities to secure technology. And the factor that had the greatest influence on level of new product development strategy was identified as participation in joint research and commissioned research.