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내시경하 갑상선절제술에 있어 CO₂ 가스주입은 안전한가?
최원범(Won Beom Choi),박용래(Yong Lai Park),최준호(Jun Ho Choe),김흥대(Hung Dai Kim),배원길(Won Gil Bae) 대한외과학회 2007 Annals of Surgical Treatment and Research Vol.73 No.4
Purpose: Endoscopic thyroidectomy has recently been widely used in clinical practice. The operative method can be classified into CO₂gas insufflation and the gasless technique. This study assessed the safety of low pressure CO₂gas insufflation (up to 6 mmHg) by performing continuous measurement of the end-tidal CO₂ (ETCO₂) pressure. Methods: From March 2003 to October 2006, 95 patients (90 hemithyroidectomies and 5 total thyroidectomies) underwent endoscopic thyroidectomy. The low pressure CO₂gas insufflation technique was applied in all cases. The ETCO₂ pressure of the patients was measured by capnometry at the time of a pre-CO₂gas insufflation status (0 minutes) and at the time of post-CO₂gas insufflation (30 minutes) and then it was measured every 30 minutes with also performing capnograms. We analyzed the ETCO₂ pressure at the time of the pre-CO₂gas insufflation status (0 min) and we compared this with that of each status by using paired T-test. Results: For all 95 cases, the mean patient age was 36.2±9.1 (range: 21∼57 years), the mean tumor size was 1.7±1.1 (range: 0.1∼4.5 ㎝) and the mean operative time was 135.0±46.1 (range: 50∼340 min). The mean ETCO₂ pressure (mmHg) was 33.0±3.9 at the time of pre-CO₂gas insufflation status (0 min); the mean ETCO₂ pressure was 31.1±3.7 at 30 min (n=95), 33.5±3.7 at 60 min (n=95), 35.2±3.6 at 90 min (n=95), 34.9±3.7 at 120 min (n=90), 34.6±3.8 at 150 min (n=70), 34.1±3.4 at 180 min (n=40), 34.3±5.2 at 210 min (n=15) and 34.0±4.2 at 240 min (n=9). There was a significant difference the early post-CO₂gas insufflation status (P<0.05 at 30 min, 90 min, 120 min), but there was no significant difference in the late post-CO₂gas insufflation status (P>0.05; at 60 min, 150 min, 180 min, 210 min, 240 min). At each time point, the ETCO₂ pressures were all within the normal range. Conclusion: We successfully performed endoscopic thyroidectomy with using the low pressure CO₂gas insufflation technique and there were no significant complications. We think that performing endoscopic thyroidectomy with using the low pressure CO₂gas insufflation technique is a safe procedure.
최원범(Won Beom Choe),권규현(Gyu Hyun Kwon) 한국해군과학기술학회 2023 Journal of the KNST Vol.6 No.3
With the recent advent of advanced IT technology and the fourth industrial revolution, the importance of using unmanned vehicles is being emphasized. Patent data analysis and topic modeling analysis were conducted based on patent information applied and registered, including IP5, to analyze the technology trends of unmanned vehicles currently applied to the public, private, and military sectors. As a result of the analysis, China occupies an absolute position in the consumer drone market, and countries such as the United States, Korea, Europe, and Japan were also gradually increasing the number of patent applications due to the development of military and commercial technologies. In addition, it was confirmed that patent application analysis and topic modeling analysis using patent data can be used in an effective way for analyzing technology trends of specific technologies.
윌슨씨병으로 진단된 138예-new phenotypic classification
김인숙 ( Kim In Sook ),이영상 ( Lee Yeong Sang ),장명국 ( Jang Myeong Gug ),최원범 ( Choe Won Beom ),김성훈 ( Kim Seong Hun ),임영석 ( Im Yeong Seog ),이한주 ( Lee Han Ju ),정영화 ( Jeong Yeong Hwa ),서동진 ( Seo Dong Jin ) 대한소화기학회 2003 대한소화기학회 추계학술대회 Vol.2003 No.-
<목적> 상염색체 열성으로 유전되며 1:30,000의 발병률을 가진 윌슨씨병에 대해 본원에서 진단된 환자의 구체적 임상양상을 고찰해보고, liver international (Ferenci P et al, 23, 2003)과 hepatology (Roberts EA et al, 37, 2003)에서 새로이 정립한 hepatic wilson환자에 대한 분류를 사용하여 보고자 한다. <대상 및 방법> 환자군은 본원에서 윌슨씨병으로 진단된 138예를 대상으로