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Enflurane 마취중 투여한 Verapamil 에 의한 현저한 빈맥 억제효과
이정준,김규삼 대한마취과학회 1987 Korean Journal of Anesthesiology Vol.20 No.3
Though clinical use of verapamil, a calcium channel blocker, is increasingly presenting and hemodynamic change due to verapamil alone and in combination with beta b1ockerg or inhalation aneathetics are in active investgation now, there is scare Korean literature about the use of verapamil for the treatment of tachycardia during aneathesia. Here, we report our clinical enflurance of dramatic, even dangerous, control of tachycardia during enflurane anesthesia in a patient with hyperthyroidism after trial of verapamil. There are two episodes of tachycardia in a 52-year old female with hyperthyroidism of 3-years duration and atrial fibrillation, each developed during enflurane anesthesia for 2 operations performed one moath apart. After slow intravenous injection of verapamil(0.1mg/kg for the first and 0.05 mg/kg for the second episode), the heart rates were reduced from 130 and 132 to 80 and 75. The effect was much sustained and the reduction of BP were slight in both instances. We feel that the dramatic reduction of heart rate is probably related to drug interaction between verapamil, propranolol given preoperatively, and enflurane. Literatures concerning the use of, and the heinodynamic changes induced by verapamil in various situations are reviewed briefly.
이정준,장성현,이주헌,이정호,Lee, Jung-Joon,Jang, Sung-Hyun,Lee, Joo-Heon,Lee, Jung-Ho The Korean Society of Phycology 2006 ALGAE Vol.21 No.4
This study was performed to understand the morphological and ecological characteristics of Peridinium bipes var. occultatum Lindem., which is the organism responsible for freshwater red tides in Sangsa dam and Miryang dam reservoirs. The samples were collected from April to July 2004 when the freshwater red tides occurred. In the study, we were able to differentiate P. bipes var. occultatum from P. bipes, a closely related species, by its smaller antapical horn size. In Miryang dam reservoir the red tide occurred only within the area of the upstream, but it was well developed in all of the water area in Sangsa dam reservoir. In 2004 average LTSI (Lake Trophic Status Index; Yang and Dickman, 1993) of Miryang dam reservoir was 3.53 of mesotrophic state and Sangsa dam reservoir was 8.59 of eutrophic state. It was determined, through culture experiments under various conditions that vitamins, trace elements, phosphorus and nitrogen were important contributing factors to the growth of P. bipes var. occultatum. A rapid toxic effect of P. bipes var. occultatum on aquatic organisms such of Daphnia magna and Oryzias latipes was not identified in this study.
Loop식 차량 검지기의 신뢰성 평가를 위한 모의 시험장치 핵심부(Loop Wave Emulator) 개발
이정준,오영태 대한교통학회 2006 대한교통학회 학술대회지 Vol.51 No.-
ITS(Intelligent Transportation Technology) 시스템에서 현장시스템의 동작 특성과 신뢰성이 중요시 되는 것은, 현장 시스템의 설치/운영환경이 Center 시스템에 비하여 상대적으로 열악한 원인도 있겠으나, 또 하나의 중요한 사항은 ITS 시스템과 물리계 사이의 Interface가 이루어지는 중요한 부분이기 때문이라 할 수 있다. ITS 현장시스템의 종류에는 다양한 여러 가지가 있으며, 각 현장시스템은 또한 여러 가지의 내부적 구성요소를 포함하고 있다. 이러한 ITS 현장시스템의 여러 구성 요소 중에서, 도로의 차량 소통 현황을 파악하는 차량 검지 장치는 중요도가 높은 구성요소 중 하나라고 할 수 있다.