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Hyojeong Choi(Hyojeong Choi),Sanggyun Roh(Sanggyun Roh) 한국화재소방학회 2022 International Journal of Fire Science and Engineer Vol.36 No.3
This study aimed to analyze the characteristics of out-of-hospital acute cardiac arrest patients collected from the Korea Centers for Disease Control and Prevention to identify the current status and provide basic data to increase the recovery rate of out-hospital acute cardiac arrest patients. As a result of the study, the number of acute cardiac arrest patients in Korea in 2019 was 30,279, of whom 1,505 (64.4%) were men and 10,774 (35.6%) were women. Of the total patients, 1,056 (51.7%) showed good neurological outcomes when paramedics performed defibrillation at the pre-hospital stage (p = 0.001). In the initial review of electrocardiographic rhythm performed by paramedics, 1,025 patients (52.8%) showed ventricular fibrillation and pulseless ventricular tachycardia, which indicated good neurological outcomes (p = 0.001).
Sanggyun Suh,Soyeon Choi,YoungRok Choi,Boram Lee,Jai Young Cho,Yoo-Seok Yoon,Ho-Seong Han 한국간담췌외과학회 2023 Annals of hepato-biliary-pancreatic surgery Vol.27 No.4
Backgrounds/Aims: While single-incision laparoscopic cholecystectomy (SILC) has advantages in cosmesis and postoperative pain, its utilization has been limited. This study raises the possibility of expanding its indication to acute cholecystitis with the novel method of solo surgery under retrospective analysis. Methods: We compared the outcomes of SILC (n = 58) to those of three-incision laparoscopic cholecystectomy (TILC; n = 117) for acute cholecystitis, being performed from March 2014 to December 2015. Results: Intraoperative results, including the operation time, did not differ significantly, except for drain catheter insertion (p = 0.004). Each group had 1 case of open conversion due to common bile duct injury. There was no significant difference in the length of hospital stay. Either group by itself was not a risk factor for complications, but in preoperative drainage for intraoperative perforation, 3 factors of intraoperative perforation, biliary complication, and history of upper abdominal operation for additional port, only American Society of Anesthesiology (ASA) scores for postoperative complication of Clavien–Dindo grades III and IV were significant risk factors. Conclusions: Our study findings showed comparative outcomes between both groups, providing evidence for the safety and feasibility of SILC for acute cholecystitis.
Jiho Choi*,Eun-Woo Choi*,YoungRok Choi,Su young Hong,Sanggyun Suh,Kwangpyo Hong,Eui Soo Han,Jeong-moo Lee,Suk Kyun Hong,Nam-Joon Yi,Kwang-Woong Lee,Kyung-Suk Suh 대한외과학회 2023 Annals of Surgical Treatment and Research(ASRT) Vol.104 No.6
Purpose: An increasing number of older patients now undergo liver transplantation (LT). Although the overall outcomes in older patients are not different from those of younger patients, there is no tool to predict LT prognosis in older patients. We hypothesized that a modified Charlson comorbidity index (mCCI) and 5-factor modified frailty index (mFI-5) can predict outcomes in older patients after LT. Methods: This retrospective study included 155 patients (aged >65 years) who underwent LT at Seoul National University Hospital. The recipients were subcategorized into 2 groups based on the mCCI score and mFI-5: the low (0–1) and high (2–5) mCCI groups, and low (≤0.4) and high (>0.4) mFI-5 groups. The independent effect of each variable on post-LT survival was determined using the mCCI subgroup, age at transplantation, sex, Child-Turcotte-Pugh score, model for end-stage liver disease (MELD) score, and mFI-5 subgroup. Results: The high-mCCI group (41 patients) showed significantly lower 1- and 3-month and 1-, 3-, and 5-year survival than the low-mCCI group. Using the Cox regression model, the mCCI, sex, and MELD score remained significant. The mFI-5 was not a significant factor to predict patients’ survival. Conclusion: The mCCI and MELD scores could be used to predict post-LT survival in older patients.
시뮬레이션을 이용한 공항 보안검색 시스템 개선으로 이용객 서비스 수준제고 방안 연구
최상균(Sanggyun Choi),이철웅(Chulung Lee) 한국컴퓨터정보학회 2013 韓國컴퓨터情報學會論文誌 Vol.18 No.3
본 연구에서는 공항 보안검색 프로세스를 분석하여 시뮬레이션 모델링 하며, 실제의 보안검색과 비교하여 시뮬레이션을 검증한다. 검증된 시뮬레이션을 활용해 현재 보안검색에서 소요되는 시간을 확인 하며, 이를 토대로 보안 검색에서의 문제점을 해소하기위한 대안을 제시한다. 대안으로는 이용객의 동선을 고려한 사항과 보안검색 시스템에 관한 대안으로 모두 4가지의 케이스를 실험하여 결과를 도출한다. 도출된 결과로 보안검색 소요시간이 크게 20.8% 감소하는 것으로 확인 할 수 있었다. 본 연구에서 개발된 시뮬레이션은 새로운 보안검색 시스템의 도입 등 보안검색에서의 의사결정 지원도구로서 사용될 수 있을 것으로 기대된다. In this study, airport security check process is analyzed to modeling a simulation. Simulation is compared with real security system to verify. Utilizing verified simulation, spends time in the current security check is calculated and suggests alternatives. Considering the movement of passengers and security check system of all four cases the results yielded by the experiment. The results show that security check time decreased significantly to 20.8%. The simulation was developed in this study; including the introduction of a new security system at security check can be used as a decision support tool is expected.