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이경룡 ( Kyeong-ryong Lee ),조영필 ( Yeong-pil Cho ),유준승 ( Jun-seung You ),백윤흥 ( Yun-heung Paek ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.2
Trusted Execution Environment(TEE) is an execution environment provided by CPU hardware to gain guarantee that the execution context is as expected by the execution requester. Remote attestation of the execution context naturally arises from the concept of TEEs. Many implementations of TEEs use cryptographic remote attestation methods. Though the implementation of attestation may be simple, the implementation of verification may be very complex and heavy. By using a server delegating the verification process of attestation information, one may produce lightweight binaries that may verify peers and establish a secure channel with verified peers.
홍대영,백광제,이경룡,권운용,박준석,어은경,오범진,이미진,이성우,서주현,노형근,김준식,Hong, Dae-Young,Baek, Kwang-Je,Lee, Kyeong-Ryong,Kwon, Woon-Yong,Park, Joon-Seok,Eo, Eun-Kyung,Oh, Bum-Jin,Lee, Mi-Jin,Lee, Sung-Woo,Suh, Joo-Hyun,Roh, 대한임상독성학회 2007 대한임상독성학회지 Vol.5 No.1
Purpose: Owing to organophosphate-pyrethroid mixtures are widely used, suicidal or unintentional poisoning is common. But there have been relatively few reports of poisoning. The purpose of this study is to evaluate the difference of the severity and toxicity between organophosphate-pyrethroid mixtures poisoning and single organophosphate poisoning. Methods: From August 2005 to July 2006, 65 patients presented with organophosphate-pyrethroid mixtures poisoning to emergency medical center. Date were gathered by report form it was drawn up. Results: 65 patients were enrolled in 28 hospitals and their mean age was $56.5{\pm}16.2$ years old. The most common cause of poisoning was suicide, in 52 cases(80%). Chlorpyrifos-cypermethrin, malathion-esfenvalerate were the most frequent chemicals involved, and the mean ingestion amount was 135.4ml. The most common symptom of the patients was nausea/vomiting, in 16 patients. The average GCS score was 13. The mean ICU stay was $4.4{\pm}5.2$ days, and mortality was 3.1%. Conclusion: The severity and toxicity of organophosphate-pyrethroid mixture poisoning were lower than that of single organophosphate poisoning.
메스암페타민 검사 양성 환자에 대한 임상적 고찰: 단일기관 연구
옥영빈,김진용,이경룡,홍대영,백광제,박상오,김종원,김신영,Ok, Young Bin,Kim, Jin Yong,Lee, Kyeong Ryong,Hong, Dae Young,Baek, Kwang Je,Park, Sang O,Kim, Jong Won,Kim, Sin Young 대한임상독성학회 2018 대한임상독성학회지 Vol.16 No.1
Purpose: Methamphetamine is an ongoing illegal drug problem worldwide, and its use in South Korea has spread over the last few years. In this study, a clinical review of patients who visited emergency medical centers with positive methamphetamine tests was conducted. Methods: Patients underwent methamphetamine screening based on physician suspicion over a period of 13 years. Their patient characteristics, clinical features, and drug administration properties were described. Results: A total of 297 patients were included, with 19 positive methamphetamine results. Patient age ranged from 21 to 84, with a mean of 37.52. Additionally, 13 were male and 6 were female. The mean BP, PR, RR were 131/82 mmHg, 94/min, 20/min. Saturation levels were all over 95%. Five patients had a psychiatric history. Patient showed varied symptoms ranging from mental changes to chest discomfort. In addition, seven showed abnormal electrocardiography findings and one showed elevated cardiac enzyme levels. Other laboratory results revealed no significantly abnormal results. Six patients also suffered from related trauma. The majority of patients consumed the methamphetamine orally, with unknown motivation at unknown locations. Most were transported by 119 and six patients co-ingested other drugs. Conclusion: Patients who showed positive results to a methamphetamine screening test in Korea visited the emergency medical center mostly by 119 and were unaware of or reluctant to reveal the fact that they had ingested methamphetamine. Emergency physicians should be more aware of the possibility that a patient may have consumed methamphetamine.
의도성 여부를 중심으로 한 일산화탄소 중독환자의 임상적 특성
조민기 ( Min Ki Cho ),김양원 ( Yang Weon Kim ),이경룡 ( Kyeong Ryong Lee ),이경우 ( Kyung Woo Lee ),이장영 ( Jang Young Lee ),조규종 ( Gyu Chong Cho ),조준호 ( Junho Cho ),김현종 ( Hyun Jong Kim ),김승환 ( Seong Hwan Kim ),정성필 대한임상독성학회 2012 대한임상독성학회지 Vol.10 No.2
Purpose: The purpose of this study was to identify the changes in the characteristics of patients with carbon monoxide (CO) poisoning, as well as the distinctive differences in intentionally exposed patients. Methods: The medical records of CO poisoning patients, who visited nine emergency departments between January 2010 and December 2011, were reviewed retrospectively. The clinical information including age, gender, hospitalization, type of discharge, cause and location of exposure, site of onset, concentration of initial blood carboxyhemoglobin (COHb), methods of treatment and presence of neurological complications was examined. The subjects were divided into an intentional and non-intentional group and the differences between them was compared. Results: A total 209 subjects were recruited. The median age was 38 years (29~49.5 years). They frequently complained of nausea and vomiting, and the most common exposures occurred in winter, normally in the home. The cause of exposure was usually fire, followed by incomplete combustion of fuels. The median initial blood COHb was 13.15%. The proportion of intentionally exposed patients was 21%. They were significantly younger, more frequently discharged against medical advice, and showed a higher initial blood COHb level (22.85%) than the non-intentional group. Conclusion: This study suggests that those with intentional CO poisoning are normally discharged against medical advice even when they have a higher initial COHb level. An adequate explanation of the delayed neurologic sequelae and short term follow-up observation is recommended for those patients with intentional exposure.
급성심근경색 환자의 증상 발현 후 골든타임내 응급의료센터 도착율 및 지연에 관련된 요인
안혜미(Ahn, Hye Mi),김형수(Kim, Hyeongsu),이건세(Lee, Kun Sei),이정현(Lee, Jung Hyun),정효선(Jeong, Hyo Seon),장성훈(Chang, Soung Hoon),이경룡(Lee, Kyeong Ryong),김성해(Kim, Sung Hea),신은영(Shin, Eun Young) 한국간호과학회 2016 Journal of Korean Academy of Nursing Vol.46 No.6
Purpose: This research was done to identify the hospital arrival rate and factors related to prehospital delay in arriving at an emergency medical center within the golden time after symptom onset in patients with acute myocardial infarction (AMI). Methods: Data used in the research was from the National Emergency Department Information System of the National Emergency Medical Center which reported that in 2014, 9,611 patients went to emergency medical centers for acute myocardial infarction. Prehospital time is the time from onset to arrival at an emergency medical center and is analyzed by subdividing arrival and delay based on golden time of 2 hour. Results: After onset of acute myocardial infarction, arrival rate to emergency medical centers within the golden time was 44.0%(4,233), and factors related to prehospital delay were gender, age, region of residence, symptoms, path to hospital visit, and method of transportation. Conclusion: Results of this study show that in 2014 more than half of AMI patients arrive at emergency medical centers after the golden time for proper treatment of AMI. In order to reduce prehospital delay, new policy that reflects factors influencing prehospital delay should be developed. Especially, public campaigns and education to provide information on AMI initial symptoms and to enhance utilizing EMS to get to the emergency medical center driectly should be implemented for patients and/or caregivers.
이누가 ( Nu Ga Rhee ),정성필 ( Sung Phil Chung ),박인철 ( In Cheol Park ),이경룡 ( Kyeong Ryong Lee ),김현진 ( Hyun Jin Kim ),김건배 ( Gun Bea Kim ),조영순 ( Young Soon Cho ),권인호 ( In Ho Kwon ),김승환 ( Seung Whan Kim ) 대한임상독성학회 2012 대한임상독성학회지 Vol.10 No.1
Purpose: Toxic alcohols are responsible for accidental and suicide motivated poisonings, resulting in death or permanent sequelae for the afflicted patients. Major therapeutic modalities in these cases include treatment with alcohol dehydrogenase inhibitors and extracorporeal elimination. There have been a number of case reports of toxic alcohol intoxication in Korea. The purpose of this study was to review the clinical characteristics of patients suffering toxic alcohol intoxication. Methods: We retrospectively reviewed the medical records of patients who presented with toxic alcohol intoxication at 8 emergency departments (ED) from Jun 2005 to Nov 2011. Patients who ingested methanol, isopropyl alcohol, ethylene glycol, and other alcohols except ethanol, were included in this study. The clinical characteristics of these patients were analyzed to include anion and osmolar gap, and estimated concentration of alcohol in the body. Results: During the study period, 21 patients were identified who had ingested toxic alcohol (methanol; 12 patients, ethylene glycol; 9 patients). At ED arrival, the mean anion gap was 18.7±6.9 and the osmolar gap was elevated in 13 patients. Oral and IV ethanol were administrated to 11 patients in order to inhibit alcohol dehydrogenase. Extracorporeal elimination procedures such as hemodialysis were performed in 9 patients. There were no fatalities, but the one patient suffered permanent blindness. Conclusion: This study found that ethylene glycol and methanol were the substances ingested which produced toxic alcohol intoxication. The patients presented with high anion gap metabolic acidosis and were typically treated with oral ethanol and hemodialysis.
Tox-Info 시스템의 중독정보 데이터베이스와 응급실에 내원하는 중독 환자 분포의 비교
김현종 ( Hyun Jong Kim ),김양원 ( Yang Weon Kim ),김현 ( Hyun Kim ),박창배 ( Chang Bae Park ),소병학 ( Byung Hak So ),이경룡 ( Kyeong Ryong Lee ),이경우 ( Kyung Woo Lee ),이경원 ( Kyung Won Lee ),이성우 ( Sung Woo Lee ),이장영 ( 대한임상독성학회 2012 대한임상독성학회지 Vol.10 No.1
Purpose: The Tox-Info system is a poisonous substance information database developed by the Korean National Institute of Food and Drug Safety Evaluation. The aim of this study was to estimate the coverage effectiveness of the Tox-Info system by comparing the toxic substances included in the database with the distribution of the toxic substances implicated in the cases of intoxicated patients presenting to emergency departments. The secondary aim of the study was to propose any additional substances that should be added to the database. Methods: We retrospectively reviewed the medical records of patients suffering with toxic exposure who had visited any of 12 selected emergency departments in Korea from January 2010 to December 2011. The identified toxic substances were classified into groups including prescription drugs, agricultural chemicals, household products, animals or plants, herbal drugs, and others. We calculated the coverage rate of the Tox-Info database relative to the number of intoxication cases and the type of toxic substances involved. Results: A total of 5,840 intoxicated patient records were collected. Their mean age was 46.6±20.5 years and 56.2% were female. Of the total intoxication cases, 87.8% of the identified toxic substances were included in the Tox-Info database, while only 41.6% of all of the types of identified toxic substances were included. Broken down by category, 122 prescription drugs, 15 agricultural chemicals, 12 household products, 14 animals or plants and 2 herbal drugs involved in poisoning cases were not included in the Tox-info database. Conclusion: This study demonstrated the clinical usefulness of the Tox-Info system. While 87.8% of the substances involved in the cases were included in the Tox-Info database, the database should be continuously updated in order to include even the most uncommon toxic substances.
이주용,조준,박호권,장상근,문창택,한혜승,이경룡 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-
The authors in this manuscript aimed to provide a practical importance of the differential diagnosis of intracranial brain tumor with emphasis on non-neoplastic abnormalities such as cytotoxic edema of the penumbra zone in strokes. The well known SOLs are cerebral ischemic, inflammatory and dysplastic lesions, which intraaxially imitate glioma and other neurogenic tumors. Brain tumor is the one of common intracranial space-occupying lesions (SOLs) on the diagnostic images. However, many non-neoplastic lesions may be indistinguishable from tumors. Especially, early mortality used to be caused by space-occupying hyperacute ischemic stroke, brain edema and herniations. For the retrospective analysis, the authors reviewed the patient charts, the emergency brain Computerized Tomography (CT), magnetic resonance imaging (MRI), clinical stroke history. From Jan. 2003 to Dec. 2003, we managed total 61 acute strokes in ICU. Even though we operated six decompressive craniotomies, nine stereotactic craniotomies including two procedures of brain biopsy and three extraventricular drainage procedures, three patients (4.91%) were finally expired out from the induced herniation and medullary failure by those aggressive strokes. 43 patients (70.5%) were recovered good from stroke attack. 15 patients (24.6%) were improved with residual neurologic deficits. In conclusion, aside from growing efforts of the radiologist to make the early diagnostic impression, the authors suggest that urgent neurosurgical explorations with the pathologic diagnostic decision should be requested to decrease the fatality.