• The Korean Journal of Pain
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• v.10 no.2
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• pp.208-213
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• 1997

Background: Pruritus is the most frequent undesirable symptom associated with epidural morphine. It is unpleasant and often difficult to treat. Naloxone is presently the drug of first choice for treating this symptom. Naloxone however decrease the pain threshold in some cases. Recently it was reported subhypnotic doses of propofol were efficient in relieving epidural-morphine-induced pruritus(EMIP). In a prospective. randomized, double-blinded clinical trial, we compared the efficacy of propofol and naloxone for treatment of EMIP. Methods: Forty patients with EMIP were allocated to receive either 20 mg propofol, or 1.5 ${\mu}g/kg$ naloxone intravenously. Pruritus and level of postoperative pain were assessed after 5 min, using pruritus rating scale and visual analogue scale. Results: The overall success rate in treating pruritus was similar in both groups (propofol 70% vs naloxone 65%). Twenty-five percent of the patients in the naloxone group had an increase in the level of postoperative pain versus none in the propofol group(P=0.018). Conclusions: These results suggest propofol and naloxone are equally effective in treating EMIP. However, the level of postoperative pain is significantly reduced when treated with propofol.

• Proceedings of the KIEE Conference
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• 1987.11a
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• pp.405-407
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• 1987

We calculated the discharge resistance, which is determined by plasma dynamics, of the discharge pumped excimer lasers with charge-transfer type. And investigated the characteristic of discharge voltage and current using EMIP.

• Journal of the Korean Society for Railway
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• v.7 no.3
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• pp.173-179
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• 2004

This paper describes a low-cost single-phase active power filter, which consists of a half-bridge PWM inverter with a simple control circuit. In order to verify the performance of proposed active power filter, many computer simulations with EMTP codes and experimental works with a hardware prototype were done. Both results confirm that the proposed active power filter shows excellent performance to eliminate the harmonics generated in the single-phase non-linear load. The active power filter has advantage of low implementation cost and compact size, using a half-bridge inverter and a simple control circuit with only one current sensor. So, it can be fabricated as a plug-in type. This paper shows the necessity and a good possibility to apply such advantage to the electric railway system.