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성인 환자에서 초음파로 측정한 시각신경집 지름이 두개강 내 압력 상승을 발견하 는데 유용한가?
오세광,조용철,구도현,유승,이진웅,김승환,유인술,유연호 대한응급의학회 2008 大韓應急醫學會誌 Vol.19 No.6
Purpose: To evaluate the utility of ONSD (optic nerve sheath diameter) measured by US (ultrasonography) in detecting the presence of increased intracranial pressure. Methods: This prospective study was done from October, 2007, to March, 2008. Patients who were 18 years or younger, had a recent ocular or periocular disease, had an abnormal Q test (Queckenstedtis test), or were uncooperative were excluded. The patients were divided into group A (increased CSF pressure group ≥200 mmCSF) and group B (normal CSF pressure <200 mmCSF). The ONSDs were measured using a 3~12 MHz ultrasonographic probe on the closed eyelids. We analyzed the correlation between the CSF (cerebrospinal fluid) pressure and the ONSD. Results: There were 21 patients in group A and 70 patients in group B. The mean for binocular ONSDs in group A was 5.1±0.6 mm and 4.5±0.4 mm in group B (p<0.01). The CSF pressure correlated with the ONSD (Correlation Coefficient=0.54) (p<0.01). In the ROC curve (Receiver operating characteristic curve) for ONSD to distinguish group A from B, the AUC was 0.8 (95% confidence interval 0.7~0.9) with a sensitivity of 81.0%, and a specificity of 75.7% when the cut off value was set at 4.7 mm. Conclusion: The ONSD was related to the CSF pressure, with a difference in the ONSD between group A and group B. The ONSD, as measured by US, can be used to detect the presence of high ICP.
오세광,조용철,구도현,유승,이진웅,유인술,김승환 대한응급의학회 2008 대한응급의학회지 Vol.19 No.5
Lidocaine is widely used as local anesthetic agent in the emergency department. Lidocaine crosses the blood brain barrier rapidly, and has been recognized generally as a proconvulsant drug. Acute lidocaine intoxication has a variety of causes, most of which related to excessive or inappropriate therapeutic dose. It has been recommended the total amount of lidocaine should not exceed 5 mg/kg without epinephrine and 7 mg/kg with epinephrine. We present a case of a patient who developed generalized convulsive status epilepticus following administration of lidocaine for epidermograft.
간질성 경련과 가성 부갑상선 기능저하증을 보인 Fahr’s Syndrome 1례
오세광,이제원,유병대,전덕호,이동하 대한응급의학회 2014 대한응급의학회지 Vol.25 No.5
Fahr’s disease is a rare disease characterized by idiopathicabnormal deposits of calcium in intracranial areas. Fahr'ssyndrome occurs secondarily to other diseases. Endocrinedisorders, particularly parathyroid hormone disorders, aremost commonly associated with Fahr's syndrome. Common clinical features of Fahr's disease or syndromeinclude movement disorder, phychiatric disorder, epilepticseizure, dementia, headache, dystonia, myoclonus, tremor,and parkinsonism. We report on a case of a 35-year-oldwoman with Fahr's syndrome who presented with epilepticseizure and pseudohypoparathyroidism.
오세광,박현정,Gyeong-Gyu Yu,정성해,이석우,김훈 대한응급의학회 2021 Clinical and Experimental Emergency Medicine Vol.8 No.3
Objective Hypoxic ischemia (HI) is a secondary insult that can cause fatal neurologic outcomes after traumatic brain injury (TBI), ranging from mild cognitive deficits to persistent vegetative states. We here aimed to unravel the underlying pathological mechanisms of HI injury in a TBI mouse model. Methods Neurobehavior, neuroinflammation, and oxidative stress were assessed in a mouse model of controlled cortical impact (CCI) injury followed by HI. Mice underwent CCI alone, CCI followed by HI, HI alone, or sham operation. HI was induced by one-vessel carotid ligation with 1 hour of 8% oxygen in nitrogen. Learning and memory were assessed using the novel object recognition test, contextual and cued fear conditioning, and Barnes maze test. Brain cytokine production and oxidative stress-related components were measured. Results Compared to TBI-only animals, TBI followed by HI mice exhibited significantly poorer survival and health scores, spatial learning and memory in the Barnes maze test, discrimination memory in the novel object recognition test, and fear memory following contextual and cued fear conditioning. Malondialdehyde levels were significantly lower, whereas glutathione peroxidase activity was significantly higher in TBI followed by HI mice compared to TBI-only and sham counterparts, respectively. Interleukin-6 levels were significantly higher in TBI followed by HI mice compared to both TBI-only and sham animals. Conclusion Post-traumatic HI aggravated deficits in spatial, fear, and discrimination memory in an experimental TBI mouse model. Our results suggest that increased neuroinflammation and oxidative stress contribute to HI-induced neurobehavioral impairments after TBI.
평간개울지혈탕이(平肝開鬱止血湯) 사염화탄소에(四鹽化炭素) 의한 간기능장애에 대한 영향
吳世光,金宇煥 동의대학교 한의학연구소 1998 동의한의연구 Vol.2 No.-
This study was undertaken to determine if Pyungangaeuljyhyul-tang (PG) has a protective effect against CCL-induced liver cell injury in rabbits. Rabbits were treated intraperitoneally with 0.5㎖/㎏ of CCL₄. In experiments for PG effect, rabbits were pretreated with 2.5 ㎖ of PG for 24 hr before and 24 hr after injection of CCL₄. When rabbits were treated with CCL₄, serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities were increased compared with the control. Such an increase in enzyme activity was significantly inhibited by pretreatment of PG. CCL₄ treatment incrased lipid peroxidation, and its effect was prevented by PG. CCL₄ treatment resulted in a reduction of reduced glutathione (GSH) and an increase of oxidized glutathione (GSSG), which were attenuated by pretreatment of PG. These results suggest that PG could be used in prevention and treatment of drug-induced liver cell injury. However, the precise mechanisms of PG protection remain to be determined.
수영 중에 벼락두통을 호소한 가역성 뇌혈관 수축 증후군 1례
오세광,유병대,전덕호,이동하,김기환 대한응급의학회 2018 대한응급의학회지 Vol.29 No.1
Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by severe thunderclap headache with multifocal segmental vasoconstriction of the cerebral arteries. RCVS can be diagnosed if the cerebral angiogram shows segmental stenosis and spontaneously resolves within weeks to months. RCVS is reversible, but might cause brain lesions such as subarachnoid hemorrhage or cerebral infarction. We report a 45-year-old woman with severe sudden onset frontal headache who was identified with reversible cerebral vasoconstriction syndrome.