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김성근,윤동환,김자연,이진우,강민우,김용철,김동기,오국환,주권욱,구호석,김연수,한승석 대한신장학회 2023 Kidney Research and Clinical Practice Vol.42 No.3
Background: Despite efforts to treat critically ill patients who require continuous renal replacement therapy (CRRT) due to acute kidney injury (AKI), their mortality risk remains high. This condition may be attributable to complications of CRRT, such as arrhythmias. Here, we addressed the occurrence of ventricular tachycardia (VT) during CRRT and its relationship with patient outcomes. Methods: This study retrospectively enrolled 2,397 patients who started CRRT due to AKI from 2010 to 2020 at Seoul National University Hospital in Korea. The occurrence of VT was evaluated from the initiation of CRRT until weaning from CRRT. The odds ratios (ORs) of mortality outcomes were measured using logistic regression models after adjustment for multiple variables.Results: VT occurred in 150 patients (6.3%) after starting CRRT. Among them, 95 cases were defined as sustained VT (i.e., lasting ≥30 seconds), and the other 55 cases were defined as non-sustained VT (i.e., lasting <30 seconds). The occurrence of sustained VT was associated with a higher mortality rate than a nonoccurrence (OR, 2.04 and 95% confidence interval [CI], 1.23–3.39 for the 30-day mortality; OR, 4.06 and 95% CI, 2.04–8.08 for the 90-day mortality). The mortality risk did not differ between patients with non-sustained VT and nonoccurrence. A history of myocardial infarction, vasopressor use, and certain trends of blood laboratory findings (such as acidosis and hyperkalemia) were associated with the subsequent risk of sustained VT.Conclusion: Sustained VT occurrence after starting CRRT is associated with increased patient mortality. The monitoring of electrolytes and acid-base status during CRRT is essential because of its relationship with the risk of VT.
Cement slurry의 金屬粉末에 依한 膨脹과 小供試體의 强度
김성근 釜山工業大學校 1975 論文集 Vol.16 No.-
이상과 같이 발포제로서 금속혼합분말을 사용한 Cement slurry의 팽창에 있어서 Cement slurr 성분의 배합비율이나 외부적 조건의 차이 등에 의하여 일어나는 변화에 관하여 검토하였다. Cement slurry 온도의 고저가 팽창의 최종의 값에는 거의 영향을 미치지 않고 있는 것이 전기의 실험에서 명확하게 되었다. 전기와 같이 단위용적이 경량 Concreat 제품을 얻는데 상당히 다량의 Cement를 사용하고 있는데도 불구하고 측정결과에서 보면 압축강도나 휨강도는 표준양생에서는 그다지 큰 값은 얻어지지 않는다. 현장의 경량 콘크리트 제품에서는 바랄 수 없지마는 이 종류의 콘크리트 제품의 공장생산을 생각할 때는 적당한 양생방법에 따라 강도를 증가시키는 방법을 강구하여야 한다고 생각된다. 이 실험에서는 모두 골재를 전연 사용하지 않았는데 외국에서는 Fly ash나 미세한 모래 등을 혼합한 제품도 나와있는 것 같아 적당한 재료를 혼합과 동시에 양성방법에도 적절한 방법을 강구하고 이 종류의 콘크리트의 강도만이 아니라 기타의 성질을 개선하는 것도 하나의 방법이라고 생각된다. 이 보고의 실험에서는 발포제로서는 예외없이 모두 금속혼합분말을 사용하였다.
김성근,김창봉 한국데이터전략학회 2014 Journal of information technology applications & m Vol.21 No.4
Global trading is an intrinsically complex endeavor with a number of parties involved. World-trading related international organizations have suggested that Single Window (SW) be used as a means to make the trading process simpler and smoother. However, since each firm has its own requirements and objectives with SW, yet there is no consensus as to what traits of 'good' Single Window are. This study uses IT appropriateness as a determinant to explain an impact on information systems success. Historically, IS success was understood as multi-dimensional constructs such as use and performance. In this study we propose another dimension, continuance, and investigate the relationships among these outcome constructs.