The Combined Use of Cardiac Output and Intracranial Pressure Monitoring to Maintain Optimal Cerebral Perfusion Pressure and Minimize Complications for Severe Traumatic Brain Injury

소진섭,윤정호 대한신경손상학회 2017 Korean Journal of Neurotrauma Vol.14 No.2

Objective: To show the effect of dual monitoring including cardiac output (CO) and intracranial pressure (ICP) monitoring for severe traumatic brain injury (TBI) patiens. We hypothesized that meticulous treatment using dual monitoring iseffective to sustain maintain minimal intensive care unit (ICU) complications and maintain optimal ICP and cerebral perfusion pressure (CPP) for severe TBI patiens. Methods: We included severe TBI, below Glasgow Coma Scale (GCS) 8 and head abbreviation injury scale (AIS) > 4 andperformed decompressive craniectomy at trauma ICU of our hospital. We collected the demographic data, head AIS, injuryseverity score (ISS), initial GCS, ICU stay, sedation duration, fluid therapy related complications, Glasgow Outcome Scale(GOS) at 3 months and variable parameters of ICP and CO monitor. Results: Thirty patients with severe TBI were initially selected. Thirteen patients were excluded because 10 patients hadfxed pupillary reflexes and 3 patients had uncontrolled ICP due to severe brain edema. Overall 17 patients had head AIS 5except 2 patients and 10 patients (58.8%) had multiple traumas as mean ISS 29.1. Overall complication rate of the patientswas 64.7%. Among the parameters of CO monitoring, high stroke volume variation is associated with fluid therapy relatedcomplications (p=0.043) and low cardiac contractibility is associated with these complications (p=0.009) statistically. Conclusion: Combined use of CO and ICP monitors in severe TBI patients who could be necessary to decompressive craniectomy and postoperative sedation is good alternative methods to maintain an adequate ICP and CPP and reduce fluidtherapy related complications during postoperative ICU care.

꿩알

소진섭 문예운동사 2006 문예운동 Vol.- No.92

The Combined Use of Cardiac Output and Intracranial Pressure Monitoring to Maintain Optimal Cerebral Perfusion Pressure and Minimize Complications for Severe Traumatic Brain Injury

소진섭,윤정호 대한신경손상학회 2017 Korean Journal of Neurotrauma Vol.13 No.2

Objective: To show the effect of dual monitoring including cardiac output (CO) and intracranial pressure (ICP) monitoring for severe traumatic brain injury (TBI) patiens. We hypothesized that meticulous treatment using dual monitoring iseffective to sustain maintain minimal intensive care unit (ICU) complications and maintain optimal ICP and cerebral perfusion pressure (CPP) for severe TBI patiens. Methods: We included severe TBI, below Glasgow Coma Scale (GCS) 8 and head abbreviation injury scale (AIS) > 4 andperformed decompressive craniectomy at trauma ICU of our hospital. We collected the demographic data, head AIS, injuryseverity score (ISS), initial GCS, ICU stay, sedation duration, fluid therapy related complications, Glasgow Outcome Scale(GOS) at 3 months and variable parameters of ICP and CO monitor. Results: Thirty patients with severe TBI were initially selected. Thirteen patients were excluded because 10 patients hadfxed pupillary reflexes and 3 patients had uncontrolled ICP due to severe brain edema. Overall 17 patients had head AIS 5except 2 patients and 10 patients (58.8%) had multiple traumas as mean ISS 29.1. Overall complication rate of the patientswas 64.7%. Among the parameters of CO monitoring, high stroke volume variation is associated with fluid therapy relatedcomplications (p=0.043) and low cardiac contractibility is associated with these complications (p=0.009) statistically. Conclusion: Combined use of CO and ICP monitors in severe TBI patients who could be necessary to decompressive craniectomy and postoperative sedation is good alternative methods to maintain an adequate ICP and CPP and reduce fluidtherapy related complications during postoperative ICU care.

객화차용 폐제륜자의 분쇄 특성 평가

소진섭(Jin-Sub So),정형일(Hyeong Il Jeong),김주원(Ju-Won, Kim),김대식(Dae-Sik Kim),김진우(Jin-Woo Kim),이성준(Seoung-Jun Lee),정승택(Seung-Taek Jung),김용한(Yong-Han Kim),이강우(Gang-Woo, Lee) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10

객화차용 폐제륜자에 대해 분쇄 특성을 평가하였다. 모두 1mm이하의 크기로 분말화가 가능하였다. 또한 상온시료보다 500℃, 900℃ 열처리 시료의 경우 파쇄 및 분쇄가 더 쉽게 이루어졌으며, 물리적 성질이나 성분 변화는 없다. 단지 마찰재의 마모만 발생하고, 원료 물질의 조성이나 특성은 변화가 없는 것으로 판단된다. Discarded brake shoes’ grinding characteristics for passenger and freight car were evaluated. It was possible to triturate the shoes into the size of less than 1mm. And the thermal treatment samples at 500℃ and 900℃ were more easily crushed and grinded than the samples at room temperature. There was no physical properties and composition changes of the shoes. We finally determined that the properties and composition of the basic raw materials weren’t changed except for abrasion of friction materials.

KTX 제동장치의 국산화 개발과 성능시험

소진섭(Jin-Sub So),이승구(Seung-Gu Lee),황상규(Sang-Kyu Hwang),금종호(Jong-Ho Keum),곽수태(Soo-Tae Kwak),김종렬(Jong-Ryeol Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10

Air brake system of KTX effectively distributes air to brake panel in each bogie. System consists of carrying bogie brake panel motor bogie brake panel driver's valve panel pneumatic auxiliary panel and other accessories. For the prove endurance confirm test number. Distributor and control moderable magnet valve are 500,000 times and respectively carrying bogie MR/BP cut-out cock are 12,000 times. Tests satisfy all of condition until now. Developments conduct a performance test to brake tester of domestic manufacturer and operating authority.

KTX 제동패널 국산화 개발과 성능시험

소진섭(Jin-Sub So),정연일(Yeon Il Jeong),박근배(Geun-Bae Park),차세환(Se-Hwan Cha),금종호(Jong-Ho Keum) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.5

KTX 공기제동장치는 대차 당 제동패널을 구성하여 각 대차에 효율적으로 분담하고 있다. 또한 객차대차 제동패널, 동력대차 제동패널, 기관사 제동패널, 공압보조패널, 기타 부속품으로 분류할 수 있다. 제작사와 운영기관에서 보유하고 있는 시험기로 최종 성능을 확인하였다. 객차대차 제동패널을 포함하여 4종의 패널에 대해서는 내구성 시험을 현재 계속 시행하고 있으며, 모두 만족한 수준으로 나타났다. Air brake system of KTX effectively distributes air to brake in each bogie, System consists of carrying bogie brake panel, motor bogie panel, driver’s valve panel, pneumatic auxiliary panel and other accessories. We have verified the performance by the tester with the presence of certification authority. We have conducted the static and dynamic tests of the prototype. Durability tests for 4 items including carrying bogie brake panel have been conducted. Tests satisfy all of condition until now.

겨울철 온도와 습도변화에 따른 철도차량 실내 PMV 측정 분석

소진섭(So Jin-Sub),유성연(Yoo Seong-Yeon),김희만(Kim Hui-Man),강성해(Kang Sung-Hae),김완종(Kim Wan-Jong),김윤수(Kim Yun-Su),김진규(Kim Jin-Kyu),서승석(Seo Seung-seok),윤차중(Yun Cha-Jung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-

The indoor PMV(Predicted Mean Vote) in rolling stock is very important for the enhancement of the amenity and health of passengers. Many researchers have studied it not for train but for building. Thermal comfort in Rolling Stock is function of temperature, relative humidity, air current, radiation temperature, etc. So, in this study, we have performed thermal environment in rolling stock(Electric motor car, Saemaeul, Mugunghwa train), and verified the relation between the PMV from Nov.2007 and Feb.2008. As a result, the average PMV value for each trains are 0.2, -0.3 Electric motor car, 0.5, 0.1, 0.1, 1.1 for Mugunghwa, 0.3, 0.5 for Saemaeul.

HEMU-400X와 해외 주전력 변환장치 시스템기술 분석

소진섭(So Jin-Sub),이영엽(Lee Young-Yeob),이진형(Lee Jin Houng),손경소(Son Kyoung-So),이종호(Lee Jong-Ho),국문석(Kook Moon-Seok),윤차중(Yun Cha-Jung) 한국철도학회 2009 한국철도학회 세미나자료 Vol.2009 No.5

The technologies of the main converter/inverter, which is indispensable for securing a safety and reliability of traction performance in rolling stock, have been compared and analyzed between HEMU-400X and High Speed Trains in Japan, France and Germany through this study. The result of this study indicates that home and abroad technologies aim at a small-sized and lightweight main converter/inverter as well as the prevention of noise in electric ventilator.

열화상카메라와 온도센서를 이용한 KTX 객차 배전반 온도 측정

소진섭(Jin-Sub So),김대식(Dae-Sik Kim),김진우(Jin-Woo Kim),이성준(Seoung-Jun Lee),김주원(Ju-Won Kim),정형일(Hyeong Il Jeong),김용한(Yong-Han Kim),이대욱(Dae-Uk Lee) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.5

객차 배전반 기기에 대한 육안점검은 검수주기에 따라 눈으로 확인하거나 기기측정을 통해 이상 유무를 판단하고 있다. 하지만 기기 종류별 최고 온도분포를 판단하기는 쉽지 않으며 불량시점도 예상하기 어렵다. 최근 상태감시 및 정밀진단을 위하여 열화상카메라를 이용한 연구가 활발히 진행되고 있으며, 상태감시를 위한 검수 모니터링 장비의 적용도 증가하는 추세이다. 본 연구는 열화상카메라와 온도센서를 이용하여 KTX 객차 배전반 계전기와 접촉기의 온도를 파악하고자 수행하였다. 계전기 보다는 접촉기가 상대적으로 높은 온도 분포를 보였으나, 제작사에서 제시하고 있는 절연재료 등급인 H형(160℃)에 만족하는 것으로 나타났다. 온도센서 측정에서는 최대 58℃, 열화상카메라 측정에서는 최대 89℃로 코일온도 측정에는 열화상카메라를 이용하는 것이 효과적이라고 판단된다. Recently, studies using a thermal imaging camera for precise diagnosis and monitoring of the status has been conducting actively. Furthermore, application of monitoring device for conditions monitoring has been increasing. This study was carried out using the temperature sensor and thermal imaging camera in order to measure out the temperature of the contactor and relay on the switchboard of KTX passenger car. The temperature distribution of contactor was more higher than the relay relatively. However, it was found that it is satisfied with the H-types which is a rating for insulation proposed by manufacturer. In the measurement using the temperature sensor, the temperature was maximum of 58℃, In case of the measurement using the thermal imaging camera, the temperature was maximum of 89℃. Therefore, it is determined that the measurement of the coil temperature using a thermal imaging camera is effective.

KTX 제동패드 성능확인을 위한 비상제동거리 측정

소진섭(Jin-Sub So),김대식(Dae-Sik Kim),김진우(Jin-Woo Kim),김주원(Ju-Won Kim),정형일(Hyeong Il Jeong),정연일(Yeon Il Jeong),김영훈(Young Hoon Kim),양정무(Jeong-Moo Yang) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.11

철도차량안전기준의 비상제동거리 세부기준에 따르면, 부하조건으로 300 km/h 에서 제동거리가 3,300 m 이내가 되도록 제시되어 있다. 서울역을 출발하여 천안아산역까지 운행중 KTX 제동패드 신품 교환(약 4 만 km 운행)후 성능확인을 위해 2 개 편성에 대해 측정하였다. 1 차 스톱워치로 확인, 2 차 KP 지점을 체크, 3 차 ATESS(열차속도, 발견된 신호, 열차상태 등 운행상황 기록)분석하였다. The emergency braking distance in load conditions is under 3300m at 300km/h, according to the Railway vehicle safety standards. The performance verification of braking pads on the KTX from Seoul to Cheonan-Asan was measured. First, we analyzed the primary stopwatch data and checked KP points. We finally performed ATESS analysis..