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추대혁,조수형,조남수,정상인 조선대학교 의학연구원 2015 The Medical Journal of Chosun University Vol.40 No.4
The purpose of this research is to compare between past and present resuscitation outcome of cardiac arrest patients in one emergency department. A clinical analysis of 429 cases of CPR performed in one emergency department from April 2013 to March 2015 was conducted. Then we compared this with previous paper that were written in same emergency department in 2004. During the period, 429 patients received resuscitations. Between the two studies, all patients under CPR were increased 2.27 times (94.33 pts/years to 214.5 pts/years). As the cause of cardiac arrest, traumatic cardiac arrest increased to 30.1% form 24.1%. Cardiogenic cardiac arrest showed highest survival rate in two studies, and the ratio was increased from 6.8% to 15.2%. VF/VT showed highest survival rate in two studies, and the ratio was increased from 8.8% to 20.7%. In this study, At least who once became ROSC patients was 260 people (60.6%), permanent surviving patient was 34 people (7.93 %), patients with CPC score 1-2 was 26 people (6.06%). The survival rate of patients with cardiac arrest has increased compared to the past. But in-hospital cardiac arrest survival rate is still low so it is necessary to increase the recovery rate of cardiogenic arrest survival rate to increase the permanent survival rate and good prognosis patients.
기관절개술을 시행한 유기인계 살충제 중독 환자의 중증도 비교
추대혁 ( Dae Hyuk Choo ),박용진 ( Yong Jin Park ),김선표 ( Sun Pyo Kim ),김성중 ( Seog Jung Kim ),조수형 ( Soo Hyung Cho ),조남수 ( Nam Soo Cho ) 대한임상독성학회 2011 대한임상독성학회지 Vol.9 No.2
Purpose: This study investigated the effect on survival rate for organophosphate intoxication patients who received tracheostomy. This research was conducted to help identify appropriate treatment of patients who received a trachostomy. Methods: This research was retrospectively conducted using the medical records of 141 patients who arrived at the Chosun University Hospital emergency medical center between Jan 2007 and Dec 2010, suffering from organophosphate intoxication. They were placed in two groups including one which received trachostomy as part of their treatment and one that did not. The effect of each variable on mortality was evaluated by regressionanalysis. Results: Of 141 patients with organophosphate intoxication, 105 of them did not tracheostomy and 16 were dead cohorts (15.2%). Their size of pupil was 1mm. Factors such as amount of organophosphate ingested, PAM time after ingestion, average body temperature, arrival time, atropinization time after ingestion, AST/ALT, Bun/Cr all appeared to be significant factors in death cohorts (P<0.05). 36 patients among the total had tracheostomy and 11 ones of them were in dead cohort (30.6%) and their average age was 58 years. The facts affect the state of patients in dead cohort include the amount of intoxication which between 327.27±194.1 ml, performing intubation 686 mins after intubation, reaching to the hospital after 580mins, injecting PAM 744 mins after intoxication, injecting atropine 627 mins after intoxication. The largest cases of patient’s state was found to be stupor with 14 patients (38.9%) the level of Cholinesterase in blood appeared to be significant in dead cohort as 391.00±353.9 IU/L (P<0.05). Conclusion: Further planned studies are necessary on the use of tracheostomy for treatment of poisoning victims, especially those intoxicated by organophosphorus insecticides.
김선표,조수형,추대혁,이강욱,김우형,박용진,김성중,조남수 대한응급의학회 2011 대한응급의학회지 Vol.22 No.5
We present cases of post traumatic infarction after head injury. Two patients were admitted to our emergency room after traffic accidents. They developed neurological deficiency after a few hours to days after the accidents. In both cases, an initial computed tomography scan of the head was normal. A follow-up computed tomography obtained later revealed a hypodense lesion at cerebral hemisphere and a diffusion-weighted magnetic resonance imaging disclosed an area of infarction. The patients were conservatively medicated. One patient died due to a medical complication and the other patient fully recovered in several weeks. Hospital admission,careful observation and early diffusion-weighted magnetic resonance examination should be considered for patients with persistent neurological deficits.
에디펜포스와 이프로벤포스 유기인 살균제 중독 치료경험 4례
김선표,조수형,선경훈,추대혁 대한응급의학회 2012 대한응급의학회지 Vol.23 No.1
Organophosphate fungicides include edifenphos, iprobenfos and tolclofos-methyl. Edifenphos inhibits cell wall synthesis by reduction in chitin synthase activity and inhibits the action of acetylcholinesterase. Thus, exposure to this chemical results in excessive salivation, lacrimation, urination,defecation, gastrointestinal motility and emesis symptoms,just like other organophosphate insecticides. Although edifenphos is an organophosphate fungicide, it is the only agricultural chemical which inhibits the action of pralidoxime and atropine, an activity which in turn, inhibits treatment. Thus, we have to treat these cases as soon as possible with atropine and pralidoxime, using the same approach as used for exposure to other organophosphate insecticides. In this report we evaluate the results of treatment of 4 patients who were intoxicated by fungicides (3cases with edifenphos and 1 case with iprobenfos).
BESS의 경제성과 충방전 전압 특성을 고려한 적정 SOC 운영 영역 설정 기법에 관한 연구
윤대식(Dae-Sik Yoon),추대혁(Dae-Hyeok Choo),기병국(Byung-Kook Ki),김준석(Joohn-sheok Kim),이병하(Byung Ha Lee),채우규(Woo-Ku Chae) 대한전기학회 2015 전기학회논문지 Vol.64 No.4
With the growing interest of microgrid all over the world, many studies on microgrid operation are being carried out. The battery energy storage system(BESS) is a key equipment for effective operation of the microgrid. In this paper, we analyze the characteristics of the charge and discharge output voltage of the battery and the characteristics of the life-span variation and the investment cost when the state-of-charge (SOC) changes. The formulas to represent the quality of the charge and discharge output voltage of the battery and the economics due to the life-span variation and the investment cost according to DOD(Depth of Discharge) are derived. The methodology of determining the proper operation ranges of the battery SOC with varying the weighting of the quality of its charge and discharge output voltage of the battery and the economics due to its life-span variation and the investment cost is presented using these formulas.