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임상연구 : 수술 전 경막외진통과 정맥 통증자가조절장치의 병합이 골유합술과 추경나사못 고정술의 수술 후 통증완화에 미치는 효과
심규대 ( Kyu Dae Shim ),이상호 ( Sang Ho Lee ),황경일 ( Kyung Il Hwang ),김광희 ( Kwang Hee Kim ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.3
Background: Postoperative pain control following bone fusion and pedicle screw fixation is insufficient with IV-PCA alone. Therefore, the effect of preoperative epidural analgesia in addition to IV-PCA was evaluated for postoperative pain control following bone fusion and pedicle screw fixation surgery. Methods: Eighty patients, scheduled to undergo bone fusion and pedicle screw fixation, were randomly assigned to two groups; the study (n = 40) or control groups (n = 40). After induction, the patient was turned into the prone position, and morphine 2 mg and 10 ml of 0.2% ropivacaine were injected into the L1/2 epidural space, after dye confirmation, under C-arm guidance for the study group, with 10 ml normal saline injected into the L1/2 epidural space for the control group. After induction, IV-PCA was applied in both groups. After the operation, the NRS (numerical rating scale) and side effects were evaluated immediately post-op, and at 24 and 48 hours after the operation. Results: In the study group, the NRS was more reduced for all periods compared with the control group, but the incidences of nausea/vomiting and pruritus were no different from the control group. Conclusions: It was concluded that preoperative epidural analgesia, in addition to IV-PCA, was a good postoperative pain control method following bone fusion and pedicle screw fixation. (Korean J Anesthesiol 2007; 52: 296~300)
심규대(Shim, Kyu Dae),김창용(Kim, Chang Ryong),정준연(Choung, Joon Yeon),김동균(Kim, Dong Kyun) 대한토목학회 2021 대한토목학회논문집 Vol.41 No.5
본 연구에서는 서해에 위치한 대산산업단지 해수담수화 시설에 필요한 전력비를 계산하고, 해수온도 및 염분도 변화에 따른 안전도를 고려한 전력비 기준을 산정하였다. 입력 자료(온도 및 염분도)는 국가해양환경정보통합시스템(MEIS, Marine Environment Information System) 22년 자료(1997~2018년)를 이용하고, 해수공정에서 사용되는 전력량은 RO막 제조사에서 제공되는 프로그램(Q-Plus v3.0)을 활용하였다. 금회연구에서는 해수담수화 시설물 설계시 합리적인 전력비 운영 가이드라인을 제시했다는데 의의가 있다. 해수담수화 역삼투압 공정은 약2.10~2.90 kWh/m³의 전력비가 소요되며, 에너지 안전도 95 % 기준으로 2.80 kWh/m³의 전력비가 해수담수화 시설을 운영할 때 고려되어야 하는 것으로 검토되었다. This study focused on safety aspects surrounding energy consumption in the seawater desalination process in the Daesan Industrial Complex located on the West Sea coast. The safety index for energy consumption was evaluated under different salinities and temperatures of the incoming seawater. Temperature and salinity input data for the 1997-2018 period were obtained from the Marine Environment Information System, and the power required for reverse osmosis (RO) was applied to the program as per the data provided by the RO membrane manufacturer (Q-Plus v3.0). Notably, reasonable energy consumption guidelines were proposed during the design of the desalination facilities; in this regard, the desalination process required approximately 2.10-2.90 kWh/㎥ electrical power. Moreover, the energy safety based on 95 % was estimated to be 2.80 kWh/㎥ when the desalination facility was operated.