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      • KCI등재

        고압산소치료의 구강악안면영역에서의 임상적 이용에 관한 연구

        류정호,엄기훈,배준수,유준영,장명진,김용관,Lyoo, Jung-Ho,Um, Ki-Hun,Bae, Jun-Su,You, Jun-Young,Jang, Myung-Jin,Kim, Yong Kwan 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.5

        Hyperbaric oxygen therapy(HBO) is defined as breathing 100% oxygen while in an enclosed system pressurized to greater than on atmosphere(sea level). This increased oxygen delivery furthers your body's ability to kill germs and to increase healing. HBO is a supplemental therapy to be used in addition to the current medical and surgical therapy you are receiving. HBO typically is used to complement treatments of medical problems such as bone infections, complication of radiotherapy, and certain chronic, non-healing wounds. On an emergency basis, the chamber also is used to treat problems such as carbon monoxide poisoning and the decompression sickness. We analysed stastically cases which are treated by hyperbaric oxygen therapy in point of oral and maxillofacial region on the Kangnam General Hospital for aid in comprehension and application of this therapy. Total 760 patients were treated at Gangnam General Hospital from July 1996 to September 1999. They were classified by region to Decompression sickness(DCS), Carbon monoxide poisoning(CO), General surgery(GS), Orthopedics(OS), Oral and Maxillofacial surgery(OMFS), others. Patients of Oral and Maxillofacial surgery were divided by diseses to Osteomyelitis, Osteoradionecrosis, Reconstruction, Bone graft, Difficult wounds, others. The results were as follows. 1. This institute conducts HBO therapy for DCS which takes up 62% and 10.5% for OMF region. 2. In OMF region, Osteomyelitis is 40%, Osteoradionecrosis is next, Bone graft, and Reconstruction is a row. 3. According to our precious study, HBO has been frequently conducted in OMF region compared to past, however, it is less actively conducted in this area for research than other conturies. Therefore, We need further application to the clinical use.

      • 운행경유차 적용 산화촉매장치의 PM저감성능 열화 분석

        황진우(Jin Woo Hwang),김예은(Ye Eun Kim),손용기(Yong Gy Son),이동섭(Dong Seop Lee),류정호(Jung Ho You),김종춘(Jong Choon Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

        Diesel oxidation catalysts(DOC) promote chemical oxidation of CO and HC as well as the SOF portion of diesel particulates. In the Midium-Duty diesel area, the DOC has been widely applied in the retrofit market. As the special act for the improvement of air quality in the capital area, the retrofit program for DOC has progressed favorably and there are currently over 90,000 of these DOC installed to in-use vehicle for retrofit applications in Korea. A DOC is a flow through device that consists of a canister containing a honeycomb-like structure or substrate. The substrate has a large surface area that is coated with an active catalyst layer. To verify the In-Use performance of DOC during warranty period, DOC equipped vehicles are randomly selected and taken away from the vehicle. The selected DOCs are tested on a standard test vehicle to be representative of the group on vehicle application which verification is sought. In this verification test, the PM reduction rate of DOC and the deviation of the performance was examined and also the test result for specific DOC was analyzed. Some DOCs failed to pass the criteria of the PM reduction rate.

      • KCI등재

        악교정 수술중 수액요법과 술후 합병증의 연관성

        류정호,김대윤,배준수,양병은,유준영,김용관 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5

        Few topics in operative and perioperative patient management generate more controversy than that of appropriate fluid and electrolyte therapy. especially, controversy has swirled around colloid vs crystalloid therapy and the composition of administered fluids, agreement among clinicians as to what fluid therapy is appropriate, and in what amount, is rare. This controversy likely will be enhanced by Arieff' s provocative article. He described 11 adults and 2 pediatric patients. All developed fatal postoperative pulmonary edema, seemingly caused solely by excessive postoperative fluid administration. From January 1999 to December 1999, we investigated 24 patients, which were operated by orthognathic surgery, about the intraoperative fluid therapy and the associated effect in orthognathic surgery, which is regarded as one of the major surgery of oral and maxillofacial surgery. First, They were devided into two groups, that is one-jaw surgery and two-jaw surgery, and each groups were devided by intraoperative fluid volume of 8ml/kg/hr. Subjective assesment was collected through use of a series of 3 questionnaries. In each questionnaire, a 5-point Liekert scale was used far assessment of following parameters of recovery from anesthesia: headache, dizziness, drowsiness, nausea/vomiting, thirst. The patient completed questionnaire 1 at 4 hour after surgery, questionnaire 2 was completed at 24 hours after surgery, and questionnaire 3 was completed at 48 hours after surgery. This study demonstrated that appropriated perioperative rehydration decreases postoperative adverse outcomes and improved the patient's perception of the postoperative period.

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