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The Influence of Face Shields on the Quality of Colonoscopy in the Era of the COVID-19 Pandemic
Lee Jin Wook,Lee Hyo Jeong,Kim Dae Sung,Yoon Jiyoung,Hong Seung Wook,Hwang Ha Won,Lee Jong-Soo,Kim Gwang-Un,Lee Sinwon,Choe Jaewon,Park Jin Hwa,Yang Dong-Hoon,Byeon Jeong-Sik 거트앤리버 소화기연관학회협의회 2022 Gut and Liver Vol.16 No.3
Background/Aims: The worldwide coronavirus disease 2019 pandemic has led endoscopists to use personal protective equipment (PPE) for infection prevention. This study aimed to investigate whether wearing a face shield as PPE affects the quality of colonoscopy. Methods: We reviewed the medical records and colonoscopy findings of patients who underwent colonoscopies at Asan Medical Center, Korea from March 10 to May 31, 2020. The colonoscopies in this study were performed by five gastroenterology fellows and four expert endoscopists. We compared colonoscopy quality indicators, such as withdrawal time, adenoma detection rate (ADR), mean number of adenomas per colonoscopy (APC), polypectomy time, and polypectomy adverse events, both before and after face shields were added as PPE on April 13, 2020. Results: Of the 1,344 colonoscopies analyzed, 715 and 629 were performed before and after the introduction of face shields, respectively. The median withdrawal time was similar between the face shield and no-face shield groups (8.72 minutes vs 8.68 minutes, p=0.816), as was the ADR (41.5% vs 39.8%, p=0.605) and APC (0.72 vs 0.77, p=0.510). Polypectomy-associated quality indicators, such as polypectomy time and polypectomy adverse events were also not different between the groups. Quality indicators were not different between the face shield and no-face shield groups of gastroenterology fellows, or of expert endoscopists. Conclusions: Colonoscopy performance was not unfavorably affected by the use of a face shield. PPE, including face shields, can be recommended without a concern about colonoscopy quality deterioration.
사이트 자율성 보장을 위한 분산 그리드 어카운팅 플랫폼 설계
김법균(Beobkyun Kim),황호전(Hojeon Hwang),이신원(Sinwon Lee),안동언(Dongun Ahn),정성종(Seongjong Chung),두길수(Gilsu Doo) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1C
지리적으로 분산된 유휴 자원들을 통합하여, 하나의 메타 컴퓨팅 환경을 제공하기 위한 연구가 활발히 진행되고 있다. 대표적인 것으로 그리드를 들 수 있는데, 통신망에 연결된 슈퍼컴퓨터, 클러스터, 워크스테이션, 대용량 저장장치 및 측정장치 등과 같은 자원을 공유하는 더 강력한 가상의 컴퓨팅 환경이다. 그리드의 세부 분야 중 어카운팅 분야는 다른 분야와는 달리 아직 그 연구가 미미한 상태이고 그리드의 특성상 기존의 플랫폼에서 취해왔던 방식이 그대로 적용되기 어려운 점이 있다. 본 논문에서는 그리드 환경에 적합하도록 분산 어카운팅을 제공하고 각 사이트의 자율성을 보장할 수 있는 어카운팅 플랫폼을 설계하였다.
엄상용,김진용,Yong Hoon Yoon,Sinwon Lee,김영학,송재관 대한심장학회 2014 Korean Circulation Journal Vol.44 No.1
Paravalvular leaks (PVLs) often occur after surgical valve replacement. Surgical reoperation has been the gold standard of therapy forPVLs, but it carries a higher operative risk and an increased incidence of re-leaks compared to the initial surgery. In high surgical risk pa-tients with appropriate geometries, transcatheter closure of PVLs could be an alternative to redo-surgery. Here, we report a case of success-ful staged transcatheter closures of a fistula tract between the aorta and right atrium, and mitral PVLs after mitral valve replacement andtricuspid annuloplasty.