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RISS 인기검색어
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- 저자 : Dal Un Chong ) (검색결과 5 건)
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0.5% 등비중 buivacaine 과 0.4% 고비중 bupivacaine 에 의한 척추마취
조남수,정종달,박은주 대한마취과학회 1987 Korean Journal of Anesthesiology Vol.20 No.6
Thie study was conducted in the Anesthesiology Department of Chosun University Hospital from March to August 1987 using 0.5% isobaric bupivacaine and 0.4% hyperbaric bupivacaine as agents for spinal anesthesia. The following results were obtained. 1) The segmental heights and the highest level of sensory loss were significantly increased with increased dosage. In the hyperbaric bupivacaine groups of 15 mg and 20 mg respectively, the sensory lose in comparison with isobaric groups was significantly increased. 2) Less time was needed to achieve, complete motor blockade in the 15 mg hyperbaric bupivacaine group than in the isobaric groups but there were no significant differences between the other groups. The duration of motor blockade was more prolonged in the isdobaric bypivacaine groups using 15mg And 20 mg than in the hyperbaric groups. 3) The Group using 20 mg of hyperbaric bupivacaine demonstrated a significant decrease in blood pressure as coupared wish the group using 20 mg of isobaric bupivacaine. 4) Following spinal anesthesia, headache developed in 5 cases (5.6%). From the above results we conluded that isobaric bupivacaine and hyperbaric bupivacaine are appropriate anesthesia agents for surgery on the lower abdomen and lower extremities.
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0.5 % 등비중 Bupivacaine 과 고비중 T-Caine 에 의한 척추마취의 비교
김용일,유병식,정종달,채종한,박은주,김융기 대한마취과학회 1990 Korean Journal of Anesthesiology Vol.23 No.5
In our hospital we studied the effects of spinal anesthesia with 0.5% isobarie bupivacaine and hyperbaric T-caine in 60 patients undergoing operation of lower abdomen or lower limbs. The following results were obtained. 1) Maximum level of sensory loss were similar in both groups, the time taken to it was significantly faster in the T-caine group but the duration was significantly longer in the bupivacaine group. 2) Onset time of motor blockade was significantly faster in the T-caine group but the duration was significantly longer in the bupivacaine. 3) The fall in blood pressure appeared faster in the T-caine group but no significant value of difference between the two groups. No significant changes were noted in the pulse rates. 4) Post spinal headache developed in 5 patients out of 60 patients (8.3%). With the results, we can assume that 0.5% isobaric bupivacaine is a good local anesthetic agent for spinal anesthesia in operations of the lower abdomen and lower limbs.
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Kim Hwi-Mun,Lee Young-Dal,Kim Da-Un,Kim Chong-Eun 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.3
Bulky traditional transformer can be replaced with solid-state-transformer (SST) thanks to fast-switching power semiconductors, such as silicon carbide FET and diode. SST implemented using LLC resonant converter can improve power efciency and minimize its highfrequency transformer. However, high isolation voltage between primary and secondary sides makes output voltage sensing much more difcult. Even though output can be monitored on secondary side, it must be also estimated for fast protection on primary side. In this paper, very accurate estimation scheme for output voltage on primary side is proposed and verifed by simulation
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0.25 % 고비중 Bupivacaine 에 의한 척추마취의 효과
김용일,임경준,유병식,정종달,채종한,박은주 대한마취과학회 1990 Korean Journal of Anesthesiology Vol.23 No.5
In our department we selected 52 patients in ASA Class I, aged from 20 to 60 years old undergoing operation of lower limbs and lower abdomen, lasting 1 to 2 hours of duration. They were divided into 2 groups, group A (30 patients) using 0.5% hyperbaric Tcaine 13 mg (2.6 ml), group B (22 patiens) using 0.25% hyperbaric bupivacaine 10 mg (4 ml), which were injected into intrathecal space. Sensory loss level was significantly higher in group A than in group B. The time taken for the block to reach maximum level was significantly faster in group B. Analgesic duration was significantly shorter in group B. In group B, onset of motor blockade was significantly slower and also, the total duration was significantly shorter. In group A, significant decrease of diastolic and systolic blood presssure were noted. Hyperbaric 0.25% bupivacaine can be used for short timed operation of lower limbs and lower abdomen without changes of cardiovascular system.
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김재원,이규환,정달언 ( Jae Won Kim,Kiu Whan Lee,Dal Un Chong ) 한국하천호수학회 1978 생태와 환경 Vol.11 No.1·2
We investigated the aquatic insects living in the mountain streams of the valley of Mount Kye Ryong comparing with the plant vegetation of the valley, from February 20th 1975 to August 15th 1975. (1) As for the plant vegetation, we examined the quantity of the forest and grass vegetation on the ground of the both sides of the mountain streams of this valley. (2) For the purpose of this investigation, we examined the quality of water of the streams. (3) Through the examination on the quantity of the aquatic insects, we wrote the biotic index by means of Beck Tsuda Method. (4) It can be asserted that the mountain streams of this valley aren`t tainted, through the result of the examination on the aquatic insects of this area. (5) The forest and grass vegetation of this area have strong influence on the quality of water, and are closely related with the quantity of the water insects of this area. (6) On the view point of taxonomy, there are 61 sorts of the aquatic insects in this area: 21 sorts of the aquatic insects in this area:21 sorts of Trichoptera, 15 sorts of Ephemeroptera, 9 sorts of Plecoptera, 5 sorts of Odonata, 4 sorts of Coleoptera, 3 sorts of Hemiptera, 2 sorts of Diptera, one sort of Megaloptera, and one sort of Lepidoptera. (7) We think that this area is suited for the national park, paying due regard to the conditions of this area.
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