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( Jung Guen Cha ),( Sang Yub Lee ),( Jihoon Hong ),( Hun Kyu Ryeom ),( Gab Chul Kim ),( Young Woo Do ) 영남대학교 의과대학 2021 Yeungnam University Journal of Medicine Vol.38 No.1
Lymphorrhea is a rare but potentially severe complication that occurs after various surgical procedures. Untreated lymphorrhea may lead to wound dehiscence, infection, and prolonged hospital stay. Currently, there is no standard effective treatment. Early management usually includes leg elevation, drainage, and pressure dressing. However, these methods are associated with prolonged recovery and high recurrence rates. We report a case of lymphorrhea from a calf wound after endoscopic great saphenous vein (GSV) harvesting for coronary artery bypass grafting (CABG). The patient presented with intractable oozing from the postoperative wound on the right calf. Lymphorrhea persisted for 6 weeks despite negative-pressure wound therapy with a long-acting somatostatin. We performed unilateral pedal lymphangiography that confirmed wound lymphorrhea, followed by glue embolization. No recurrence was observed after 8 months of follow-up. This case report demonstrates the successful use of lymphangiography with glue embolization in the control of lymphorrhea after GSV harvesting for CABG.
백근호(Back, Guen-Ho),유승한(You, Seung-Han),이정혁(Lee, Jung-Hyuk),최희영(Choi, Hee-Young),차왕석(Cha, Wang-Seog) 한국산학기술학회 2010 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 상용 이온성 액체를 대체하기 위해 손쉽게 구입할 수 있는 원료물질을 사용하여 이온성 액체를 실험실 규모로 제조한 후 고압 연소전 조건에서 이산화탄소의 용해도 및 재생력을 측정하기 위해 기-액 흡수평형장치를 이용하여 연구하였다. [eeim]ethyl sulfite를 제조하여 흡수실험을 실시한 결과 흡수평형압력이 25bar의 조건에서 0.72 mol CO₂ /mol IL의 흡수력을 보였으며, 재생성능은 탈착 전후의 흡수력 차이가 약 9%로 우수한 편이었다. 희석제를 첨가하였을 경우 흡수력은 약 38% 감소하였으나, 합성단계가 간단하며 원료물질이 저렴한 장점을 가지고 있다.
Minhyeok Yoon,Jung Guen Cha,Jongmin Park,Sang Yub Lee,See Hyung Kim,Jihoon Hong,Byunggeon Park 대한영상의학회 2023 대한영상의학회지 Vol.84 No.5
Bronchial artery aneurysm (BAA) is a rare disease, and multiple aneurysms of a single bronchial artery are rarer. Regardless of the size of the lesion, it is at risk of rupture and can cause massive hemoptysis or severe pain. We report a rare case of bronchial artery embolization (BAE) of multiple aneurysms of a single bronchial artery. During medical examination, a 64-year-old female was diagnosed with multiple BAAs and endobronchial lesions in the right lower lung on CT 10 years prior to presentation to our hospital. Further evaluation of the lesions was recommended; however, the patient was lost to follow-up. The patient complained of dyspnea and visited our hospital, and the size of the BAA had increased on CT. BAE was done successfully using N-butyl-2-cyanoacrylate and detachable coils. Follow up CT after BAE showed significant decrease in extent of inflammatory lesion in the right lung.
정순원(Soon-Weon Jung),차홍규(Houng-Kyu Cha),김상일(Sang-Il Kim),김대근(Dae-Guen Kim),박미정(Mi-Jung Park),심준환(Joon-Hwan Shim) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
본 논문에서는 산업현장을 배경으로 가스누출로 인한 질식사고 및 화재사고를 방지하기 위해 가스농도에 따른 단계별 위험수위로 나누어 상황에 맞게 자동으로 가스차단 및 환기가 이루어지는 시스템을 구현하였다. In this paper, we have implemented an automatic gas shutdown and ventilation system to prevent a fire and a suffocation accident due to gas leakage when it is a dangerous situation in industry fields. This system could operate two dangerous levels according to gas concentration.
정순원(Soon-Weon Jung),차홍규(Houng-Kyu Cha),김상일(Sang-Il Kim),김대근(Dae-Guen Kim),박미정(Mi-Jung Park),심준환(Joon-Hwan Shim) 한국항해항만학회 2008 한국항해항만학회 학술대회논문집 Vol.2008 No.공동학술
본 논문에서는 산업현장을 배경으로 가스누출로 인한 질식사고 및 화재사고를 방지하기 위해 가스농도에 따른 단계별 위험수위로 나누어 상황에 맞게 자동으로 가스차단 및 환기가 이루어지는 시스템을 구현하였다. In this paper, we have implemented an automatic gas shutdown and ventilation system to prevent a fire and a suffocation accident due to gas leakage when it is a dangerous situation in industry fields. This system could operate two dangerous levels according to gas concentration.
적출간 관류법에 의한 N,N-dimethylformamide의 대사 및 간독성
고상열,이중우,고상백,권상옥,강명근,차봉석 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.2
N,N-dimethylformamide(DMF) is a solvent which is widely used in the industrial workplace. It causes the liver damages to the chronically exposed workers and is also well known as the harzadous material to generate occupational malignancies. DMF is mainly metabolized into N-hydroxymethyl-N-methylformamide(HMMF) by the microsomal cytochrome p-450. HMMF breaks down to NMF. However, the detailed mechanism of its toxicity are unknown. In this experiment, the metabolism and the toxicity of DMF was investigated using an isolated perfused liver model. DEF(0, 10, 25mM) were added into recirculation perfusate of the isolated perfused rat liver. Samples were collected at 0, 30, 45, 60, 75, 90 minutes from inferior vena cava. The gas-chromatography was used to analyze the metabolite of DMF. The changes in the oxygen consumption rate by DMF were monitered during perfusion. The enzyme activity(AST, ALT, LDH) in the perfusate were measured to find out whether DMF causes hepatotoxicity. As perfusion continued, DMF concentration in the perfusate decreased, and NMF 1.16mM was detected. The oxygen consumption rate increased both at 10mM and 25mM DMF concentration. However, when SKF 525A, a known inhibitor of cytochrome p-450, had been pretreated (300uM) before DMF addition, the oxygen consumption rate was significantly inhibited, indication that cytochrome p-450 system is responsible for the conversion to NMF. With DMF addition, the activity of AST, ALT, and LDH significantly increased time dependently and dose dependently. However, the pretreatment of perfused liver with SKF 525A showed that the release of AST, ALT and LDH was inhibited. In summary, it is found that DMF is metabolized to NMF in liver, and that cytochrome p0450 mono-oxygenase is suggested to play a role in the biotransformation of NMF. The time course of DMF toxicity in relation to NMF formation is compatible with hypothesis that the hepatotoxicity in relation to NMF formation is compatible with hypothesis that the hepatotoxicity of DMF is mediated via NMF. Further study combined with in vivo experiment through the toxicological approaches is expected.
Jihoon Hong,Gab Chul Kim,Jung Guen Cha,Jongmin Park,Byunggeon Park,Seo Young Park,Sang Un Kim 대한영상의학회 2024 대한영상의학회지 Vol.85 No.3
Afferent loop syndrome (ALS) is a rare complication of gastrectomies and gastrointestinal reconstruction. This can predispose patients to fatal conditions, such as cholangitis, pancreatitis, and duodenal perforation with peritonitis. Therefore, emergency decompression is necessary to prevent these complications. Herein, we report two cases in which transcholecystic duodenal drainage, an alternative decompression treatment, was performed in ALS patients without bile duct dilatation. Two patients who underwent distal gastrectomy with Billroth II anastomosis sought consultation in an emergency department for epigastric pain and vomiting. On CT, ALS with acute pancreatitis was diagnosed. However, biliary access could not be achieved because of the absence of bile duct dilatation. To overcome this problem, a duodenal drainage catheter was placed to decompress the afferent loop after traversing the cystic duct via a transcholecystic approach. The patients were discharged without additional surgical treatment 2 weeks and 1 month after drainage.
Chung Hyun Tae,Ra Ri Cha,Jung-Hwan Oh,Tae-Guen Gweon,Jong Kyu Park,Ki Bae Bang,Kyung Ho Song,Cheal Wung Huh,Cheol Min Shin,Jong Wook Kim,Young Hoon Youn,Joong Goo Kwon 대한소화기 기능성질환∙운동학회 2024 Journal of Neurogastroenterology and Motility (JNM Vol.30 No.1
Background/AimsProkinetic agents and neuromodulators are among the treatment options for functional dyspepsia (FD), but their comparative efficacy is unclear. We aimed to compare the efficacy of mosapride controlled-release (CR) and nortriptyline in patients with FD after 4 weeks of treatment. MethodsParticipants with FD were randomly assigned (1:1) to receive mosapride CR (mosapride CR 15 mg and nortriptyline placebo) or nortriptyline (mosapride CR placebo and nortriptyline 10 mg) in double-placebo, double-blinded, randomized controlled, parallel clinical study. The primary endpoint was defined as the proportion of patients with overall dyspepsia improvement after 4 weeks treatment. The secondary endpoints were changes in individual symptom scores, anxiety, depression, and quality of life. ResultsOne hundred nine participants were recruited and assessed for eligibility, and 54 in the mosapride CR group and 50 in the nortriptyline group were included in the modified intention-to-treat protocol. The rate of overall dyspepsia improvement was similar between groups (53.7% vs 54.0%, P = 0.976). There was no difference in the efficacy of mosapride CR and nortriptyline in a subgroup analysis by FD subtype (59.3% vs 52.5% in postprandial distress syndrome, P = 0.615; 44.4% vs 40.0% in epigastric pain syndrome, P = > 0.999; 50.0% vs 59.1% in overlap, P = 0.565; respectively). Both treatments significantly improved anxiety, depression, and quality of life from baseline. ConclusionMosapride CR and nortriptyline showed similar efficacy in patients with FD regardless of the subtype. Both treatments could be equally helpful for improving quality of life and psychological well-being while also relieving dyspepsia.