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정양훈,정재웅,Kim Sang Hyun 대한마취통증의학회 2023 Anesthesia and pain medicine Vol.18 No.1
The mortality scoring systems for patients with end-stage liver disease have evolved from the Child-Turcotte-Pugh score to the model for end-stage liver disease (MELD) score, affecting the wait list for liver allocation. There are inherent weaknesses in the MELD score, with the gradual decline in its accuracy owing to changes in patient demographics or treatment options. Continuous refinement of the MELD score is in progress; however, both advantages and disadvantages exist. Recently, attempts have been made to introduce artificial intelligence into mortality prediction; however, many challenges must still be overcome. More research is needed to improve the accuracy of mortality prediction in liver transplant recipients.
산학일체형 도제학교 학생의 교육만족도와 학교수업 및 기업현장수업 변인들의 관계
정양훈,나승일 한국농·산업교육학회 2023 농업교육과 인적자원개발 Vol.55 No.1
The purpose of this study was to investigate the relationship between the educational satisfaction of students in Industry-Academia Partnership Apprenticeship School and the variables of school-based instruction and industry-based instruction. The population was 7,259 students from Industry-Academia Partnership Apprenticeship School as of February 2021, and 450 were selected by stratification according to operation type and location, and 373 responses were used for the final analysis except for insincere responses and outliers. For data analysis, descriptive statistical analysis, one-way ANOVA, and hierarchical regression analysis were conducted using SPSS for Windows 23.0, and the statistical significance level was set to 5%. The main research conclusion is that first, students generally have a positive attitude towards apprenticeship education, but one out of ten students may not be satisfied. Female, service majors, students who want to work in companies, and students who participate in industry-led types have a relatively high level of satisfaction. Second, students generally have a high level of awareness of the variables of school-based instruction and corporate-based instruction, and show similar levels regardless of the place except for the variables of class engagement. However, the level of class engagement variables is relatively low and may show differences depending on the subject and place. Third, the explanatory power of the variable group of school-based instruction and corporate-based instruction for educational satisfaction is high and shows similar. Among the school-based instruction variables, the appropriateness of school-based instruction had the greatest quantitative effect on educational satisfaction, and general subject class engagement had a negative effect. Additionally, class engagement and usefulness of classes in schools have a significant effect on educational satisfaction. Based on these main conclusions, suggestions for improving the educational satisfaction of students Industry-Academia Partnership Apprenticeship School were presented. 이 연구의 목적은 산학일체형 도제학교 학생들의 교육만족도와 학교수업 및 기업현장수업 변인들의 관계를 구명하는 것이었다. 모집단은 도제학교 학생으로 2021년 2월 기준 184개 과정 7,259명이고, 표본은 운영유형과 소재지에 따라 층화표집하여 450명을 선정하였으며, 불성실 응답 및 이상치를 제외하고 373명의 응답을 최종분석에 활용하였다. 자료 분석은 SPSS for Windows 23.0을 활용하여 기술통계분석, 일원분산분석 및 위계적 회귀분석을 실시하였으며, 통계적 유의 수준은 5%로 설정하였다. 주요 연구 결론은 첫째, 학생들은 대체로 도제교육 경험에 대해 긍정적으로 느끼고 있으나, 10명 중 1명은 만족하지 않을 수 있고, 여학생, 서비스 전공분야, 도제기업 취업희망 학생, 산업계주도 유형 참여 학생의 만족도가 상대적으로 높은 편이다. 둘째, 학생들은 학교수업 및 기업현장수업 변인들에 대해 전반적으로 높게 인식하며, 수업몰입 변인들을 제외하고 장소에 관계없이 유사한 수준을 보인다. 다만, 수업몰입 변인들의 수준은 상대적으로 낮으며 교과와 장소에 따라 차이를 보일 수 있다. 셋째, 교육만족도에 대한 학교수업 및 기업현장수업 변인군의 설명력은 높은 수준이고 서로 비슷한 크기를 보인다. 또한, 학교수업 변인군 중 학교수업 적절성이 교육만족도에 가장 큰 양적 영향을 미치고, 보통교과 수업몰입은 부적 영향을 미치며, 기업현장수업 변인군 중 기업현장수업에서의 학교수업 유용성이 교육만족도에 가장 큰 양적 영향을 미친다. 이 밖에도 학교와 기업에서의 수업몰입과 수업유용성이 공통으로 교육만족도에 유의한 영향을 미친다. 주요 결론을 바탕으로 산학일체형 도제학교 학생들의 교육만족도 제고를 위한 제언을 제시하였다.
정양훈,정익수,김명희,신진섭,박준우,이정진 대한마취통증의학회 2017 Anesthesia and pain medicine Vol.12 No.3
Background: The differences between neuromuscular blocking (NMB) drugs on the efficacy of intraoperative motor-evoked potential (MEP) monitoring have not been established through clinical study. We compared the effects of vecuronium and cisatracurium on the efficacy of intraoperative MEP monitoring. Methods: We enrolled 72 patients who had undergone neurosurgery with MEP monitoring. We randomly allocated the subjects into one of two groups, in whom we maintained continuous intravenous vecuronium (Group V) or cisatracurium (Group C) infusion during the surgeries; the target partial NMB for maintenance was T1/Tc 50% (T1, first twitch of TOF response; Tc, control response of T1 before NMB drug injection). We compared the means and coefficients of variation (CV, %) of all measured MEP amplitudes and the frequencies of NMB drug dose changes. Results: The means and CVs of MEP amplitude and latency in all four limbs did not differ significantly between the groups, although we did change the continuous NMB drug doses in group V significantly less often than in group C. Conclusions: There were no significant differences between vecuronium and cisatracurium on the MEP variability and mean amplitudes. However, cisatracurium needed more frequent dose changes to maintain T1/Tc 50%.
김상현,정양훈,이소정,구본성,조아나,이미순,박준우 대한마취통증의학회 2019 Anesthesia and pain medicine Vol.14 No.1
Monitoring cerebral oxygenation using a near infrared spectroscopy (NIRS) device is useful for estimating cerebral hypoperfusion and is available during liver transplantation (LT). However, high serum bilirubin concentration can interfere with NIRS because bilirubin absorbs near infrared light. We report a patient who underwent LT with a diagnosis of vanishing bile duct syndrome, whose regional cerebral oxygen saturation (rSO2) remained below 15% even with alert mental status and SpO2 value of 99%. The rSO2 values were almost fixed at the lowest measurable level throughout the intra- and postoperative period. We report a case of erroneously low rSO2 values during the perioperative period in a liver transplant recipient which might be attributable to skin pigmentation rather than higher serum bilirubin concentration.
상악전치부 결손부에서 골유도재생술식을 동반한 임플란트 수복의 증례보고
홍은진,고미선,정양훈,윤정호 대한치과의사협회 2019 대한치과의사협회지 Vol.57 No.3
Atrophic alveolar ridge of maxillary anterior area is commonly observed after the extraction of teeth in patients with severely compromised periodontal disease, causing difficulties with implant placement. Successful esthetics and functional implant rehabilitation rely on sufficient bone volume, adequate bone contours, and ideal implant positioning and angulation. The present case report categorized the ridge augmentation techniques using guided bone regeneration (GBR) on the maxillary anterior site by Seibert classification. Case I patient presented for implant placement in the position of tooth #11. The alveolar ridge was considered a Seibert classification I ridge defect. Simultaneous implant placement and GBR were performed. Eight months after implantation, clinical and radiological examinations were performed. Case III patient presented with discomfort due to mobility of the upper maxillary anterior site. Due to severe destruction of alveolar bone, teeth #11 and #12 were extracted. After three months, the alveolar ridge was considered a Seibert classification III ridge defect. A GBR procedure was performed; implantation was performed 6 months later. Approximately 1-year after implantation, clinical and radiological examinations were performed. During the whole treatment period, healing was uneventful without membrane exposure, severe swelling, or infection in all cases. Radiographic and clinical examinations revealed that atrophic hard tissues and buccal bone contour were restored to the acceptable levels for implant placement and esthetic restoration. In conclusion, severely resorbed alveolar ridge of the maxillary anterior area can be reconstructed with ridge augmentation using the GBR procedure so that dental implants could be successfully placed.