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이승우,이상학,여동승,이숙영,김석찬,김관형,문화식,송정섭,박성학,정은선,Lee, Seung-Woo,Lee, Sang-Haak,Yeo, Dong-Seung,Lee, Sook-Young,Lee, Seok-Chan,Kim, Kwan-Hyoung,Moon, Hwa-Sik,Song, Jeong-Sup,Park, Sung-Hak,Jung, Eun-Sun 대한결핵및호흡기학회 2002 Tuberculosis and Respiratory Diseases Vol.53 No.6
Amiodarone 폐독성은 약제 복용력이 있는 환자에서 새로운 증상과 X-선의 변화가 있을 때 의심하여야 하며 울혈성 심부전이나 폐감염증, 폐색전증, 악성종양 등과 감별하는 것이 중요하다. 진단은 임상적, 방사선학적, 조직학적 소견을 종합하여 내릴 수 있으며 대부분의 경우에는 약제 중단을 통해서 폐독성의 호전을 기대할 수 있으나 일부에서는 호흡부전으로 진행하거나 기존의 심부정맥의 재발 등으로 인하여 사망하는 경우도 있다. 저자들은 심부정맥으로 amiodarone을 사용하던 환자에서 치명적인 폐독성이 발생한 4예를 경험하였기에 이를 문헌고찰과 함께 보고하는 바이다. The lungs are frequently the site of adverse drug reactions because of their higher oxygen concentration, the distinctive properties of the pulmonary circulation, and the close proximity of the alveolar epithelium to the blood. Amiodarone, an iodinated benzofuran derivative, is an effective antiarrhythmic drug commonly used for refractory tachyarrhythmia. However, it has a wide range of adverse effects, the most serious of which is lung disease. Most patients present with the insidious onset of dyspnea and a nonproductive cough, and generally recover after withdrawing the drug. We recently experienced four fatal cases of amiodarone pulmonary toxicity. Therefore, we discuss these unusual drug-induced pulmonary toxicity cases with a review of the relevant literature.
이승우,최영웅,남상현,김훈,Lee, Seung-Woo,Choi, Young-Woong,Nam, Sang-Hyun,Kim, Hoon 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.4
Purpose: Retrobulbar hemorrhage is a rare complication followed by blepharoplasty, trauma, orbital reconstruction, and so on. Most of the cases occur within 24 hours, half of them in the first 6 hours. Some authors have reported delayed retrobulbar hemorrhage after blepharoplasty and trauma within 1 day to 9 days. However, there have been few reports of delayed retrobulbar hemorrhage resulting from the complication of orbital reconstruction. Methods: A 22-year-old male underwent orbital floor reconstruction due to the orbital floor fracture. In 84 hours after the surgery, he complained sudden onset orbital pain and decreased visual acuity immediately after defecation. Intraocular pressure was unmeasurable due to the swelling at that time. Emergency computed tomography was performed. Results: Computed tomography revealed subperiosteal hematoma on inferior orbital wall extended to the apex. Emergency decompressive surgery was performed within 1 hour. After evacuation of hematoma, orbital symptom was improved and visual acuity was restored. Conclusion: Delayed retrobulbar hemorrhage is rare but vision-threatening. Therefore early diagnosis and treatment of delayed retrobulbar hemorrhage is thought to be crucial. The cause of delayed hemorrhage was not clear, however, valsalva maneuver might be the cause of hemorrhage.
이승우,Lee, Seung-Woo 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.3
Underwater acoustic(UWA) communication is one of the most difficult field in terms of severe channel environments such as multipath propagation, high temporal and spatial variability of channel conditions. Therefore, it is important to model and analyze the characteristics of underwater acoustic channel such as multipath propagation, transmission loss, reverberation, and ambient noise. In this paper, UWA communication channel is modeled with a ray tracing method and applied to image transmission. Quadrature phase shift keying(QPSK) and multichannel decision feedback equalizer(DFE) are utilized as phase-coherent modulation method and equalization technique, respectively. The objective is to improve the performance of the image transmission using vertical sensor array instead of single sensor in the viewpoint of bit error rate(BER), constellation diagram, and received image quality.
이승우,Lee, Seung-U 한국특허정보원 2010 Patent 21 Vol.91 No.-
지금 대한민국은 우리 술 막걸리로 술렁이고 있다. 한때 우리나라 사람들에게 천대받던 막걸리가 이제는 한반도를 넘어 해외시장으로까지 진출하고 있다. 오늘날 막걸리 열풍이 있기까지의 역사적 변천과정과 앞으로 막걸리를 브랜드화 하는데 있어서 염두에 두어야 할 사항들에 대해서 집중해보고자 한다.