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천연식물추출물과 제올라이트를 이용한 항균모래의 제조 및 항균효과 연구
천상수,이은우,정병길 한국환경기술학회 2024 한국환경기술학회지 Vol.25 No.1
. Demand for sand playgrounds that can help children's emotional development is gradually increasing due to the harmfulness of synthetic rubber flooring used in children's playgrounds and controversy over environmental pollution. However, in the case of children's playground sand, safety risks are high when the human body is exposed to harmful heavy metals and germs for a long time. The purpose of this research is to manufacture antibacterial sand mixed with natural plant extracts as a natural antibacterial agent based on zeolite to prevent infection with harmful bacteria that can be transmitted through direct or indirect contact in sand in children's play spaces, It is to evaluate the antibacterial effect and safety from bacteria. Antibacterial sand was prepared by mixing zeolite balls molded, dried, and calcined with natural plant extracts and then dried. citric acid, soleus fruit extract and cinnamon extract were used as natural plant extracts. Antibacterial sand prepared at a weight mixing ratio of 1:1 of natural plant extracts (citric acid 50 %, soleus fruit extract 25 %, cinnamon extract 25 %) and zeolite was immersed in citric acid to increase the sand weight by 15 % and 20~25 %. In both cases, as a result of measuring the change in the number of Escherichia coli (EC) KCTC and Staphylococcus aureus (SA) KCTC, the antimicrobial activity was 99.9 %. In addition, as a result of measuring the change in the number of Escherichia coli (EC) KCTC and Staphylococcus aureus (SA) KCTC after leaving the antimicrobial sand prepared at a weight mixing ratio of 1:1 of natural plant extract and zeolite outdoors for 80 days, it was confirmed that some antibacterial activity remained. Therefore, antibacterial sand is expected to be applicable to various fields using sand as well as providing a safe and eco-friendly sand play space by preventing infection with harmful bacteria and viruses such as Escherichia coli and Staphylococcus aureus.
Flecainide 독성과 관련된 치명적인 심실상빈맥의 1예
천상수 ( Sang Soo Cheon ),송준혁 ( Joon Hyuk Song ),배명환 ( Myung Hwan Bae ),이장훈 ( Jang Hoon Lee ),양동헌 ( Dong Heon Yang ),박헌식 ( Hun Sik Park ),채성철 ( Shung Chull Chae ) 대한내과학회 2014 대한내과학회지 Vol.87 No.1
Flecainide acetate is a potent class Ic anti-arrhythmic drug with a major sodium channel-blocking effect. Flecainide toxicity can cause myocardial impairment and precipitate circulatory collapse, particularly in patients with renal failure. Electrical and hemodynamic deterioration during flecainide toxicity may not respond to conventional treatments. We report the successful management of flecainide toxicity using extracorporeal membrane oxygenation (ECMO), hemoperfusion, and bicarbonate administration maintaining alkalinity. (Korean J Med 2014;87:72-76)
Etiologies and Predictors of ST-Segment Elevation Myocardial Infarction
배명환,조용근,천상수,송준혁,장세영,최원석,김균희,박선희,이장훈,양동헌,박헌식,채성철 대한심장학회 2013 Korean Circulation Journal Vol.43 No.6
Background and Objectives: Rapid diagnosis of ST-segment elevation myocardial infarction (STEMI) is essential for the appropriate management of patients. We investigated the prevalence, etiologies and predictors of false-positive diagnosis of STEMI and subsequent inappropriate catheterization laboratory activation in patients with presumptive diagnosis of STEMI. Subjects and Methods: Four hundred fifty-five consecutive patients (62 ±13 years, 345 males) with presumptive diagnosis of STEMI be-tween August 2008 and November 2010 were included. Results: A false-positive diagnosis of STEMI was made in 34 patients (7.5%) with no indication of coronary artery lesion. Common causes for the false-positive diagnosis were coronary spasm in 10 patients, left ventricular hypertrophy in 5 patients, myocarditis in 4 patients, early repolarization in 3 patients, and previous myocardial infarction and stress-induced cardiomyopathy in 2 patients each. In multivariate logistic regression analysis, symptom-to-door time >12 hours {odds ratio (OR) 4.995, 95% confidence interval (CI) 1.384-18.030, p=0.014 }, pre-senting symptom other than chest pain (OR 7.709, 95% CI 1.255-39.922, p=0.027), absence of Q wave (OR 9.082, CI 2.631-31.351, p<0.001)and absence of reciprocal changes on electrocardiography (ECG) (OR 17.987, CI 5.295-61.106, p<0.001) were independent predictors of false-positive diagnosis of STEMI. Conclusion: In patients whom STEMI was planned for primary coronary intervention, the false-positive diagnosis of STEMI was not rare. Correct interpretation of ECGs and consideration of ST-segment elevation in conditions other than STEMI may reduce inappropriate cathe-terization laboratory activation.
윤재용,송준혁,천상수,조현준,배명환,이장훈,양동헌,박헌식,조용근,채성철 한국심초음파학회 2013 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.21 No.1
Fabry disease is a progressive X-linked disorder of glycosphingolipid metabolism caused by a deficiency of the α-galactosidase lysosomal enzyme. The partial or complete deficiency of the lysosomal enzyme leads to an accumulation of neutral glycosphingolipids in the vascular endothelium and visceral tissues throughout the body. In the heart, glycosphingolipids deposition causes progressive left ventricular hypertrophy (LVH). We report a case of Fabry disease which was suspected based upon two-dimensional echocardiographic finding of LVH. A 44-year-old man was admitted to evaluation of aggravated exertional dyspnea of two weeks duration. He had been diagnosed with end-stage renal disease of unknown etiology at age 41 followed by renal transplantation that year. He had been treated with oral immunosuppressive agents. On hospital day two, transthoracic echocardiography revealed concentric LVH. Left ventricular systolic function was preserved but diastolic dysfunction was present. Fabry disease was confirmed by demonstration of a low plasma α-galactosidase A (α-Gal A) activity. Analysis of genomic DNA showed α-Gal A gene mutation. The patient was diagnosed with Fabry disease.
장세용,조용근,송준혁,천상수,박선희,배명환,이장훈,양동헌,박헌식,채성철 대한의학회 2013 Journal of Korean medical science Vol.28 No.9
Endomyocardial biopsy (EMB) is one of the reliable methods for the diagnosis of various cardiac diseases. However, EMB can cause various complications. The purpose of this study is to evaluate the complication of transfemoral EMB with both fluoroscopic and twodimensional (2-D) echocardiographic guidance. A total of 228 patients (148 men;46.0 ± 14.6 yr-old) who underwent EMB at Kyungpook National University Hospital from January 2002 to June 2012 were included. EMB was performed via the right femoral approach with the guidance of both echocardiography and fluoroscopy. Overall, EMBrelated complications occurred in 21 patients (9.2%) including one case (0.4%) with cardiac tamponade requiring emergent pericardiocentesis, four cases (1.8%) with small pericardial effusion without pericardiocentesis, two cases (0.9%) with hemodynamically unstable ventricular tachycardia (VT), one case (0.4%) with nonsustained VT, one case (0.4%) with tricuspid regurgitation, twelve cases (5.3%) with right bundle branch block. There was no occurrence of either EMB-related death or cardiac surgery. Left ventricular ejection fraction was significantly lower (32.0 ± 18.7% vs 42.0 ± 19.1%, P = 0.023) and left ventricular end-diastolic dimension was larger (60.0 ± 10.0 mm vs 54.2 ± 10.2 mm,P = 0.013) in patients with EMB related complications than in those without. It is concluded that transfemoral EMB with fluoroscopic and 2-D echocardiographic guidance is a safe procedure with low complication rate.
송준혁 ( Joon Hyuk Song ),천상수 ( Sang Soo Cheon ),김남균 ( Nam Kyun Kim ),김창연 ( Chang Yeon Kim ),배명환 ( Myung Hwan Bae ),이장훈 ( Jang Hoon Lee ),양동헌 ( Dong Heon Yang ) 대한내과학회 2014 대한내과학회지 Vol.87 No.4
Epipericardial fat necrosis (EPFN) is an uncommon benign condition of unknown etiology. It presents as an unexplained acute severe pleuritic chest pain that is associated with the presence of a well-defined juxtacardiac mass usually located in or near the cardiophrenic angle. Although its typical clinical manifestations and chest computed tomography findings might lead to successful diagnosis of this rare disease, an unusual mass location such as the anterosuperior mediastinum should be considered and biopsies should be performed. We herein report a case of thymic carcinoma that was suspected initially to be EPFN. (Korean J Med 2014;87:466-470)
내시경적 담도 담석 제거술 중 바스켓에 감돈된 담도 담석을 체외충격파쇄석술로 치료한 1예
박현우,양해민,송준혁,천상수,조창민,정민규 대한췌담도학회 2013 대한췌담도학회지 Vol.18 No.2
Theraputic endoscopic retrograde cholangiopancreatography replaced surgery as the first approach in cases of choledocolithiasis. Nowadays, endoscopic sphincterotomy combined with balloon catheters and/or baskets is the routine endoscopic technique for stone extraction in the great majority of patients. Large common bile duct stones are treated conventionally with extracorporeal shock wave lithotripsy. However, there is little report about treating incarcerated common bile duct stone with extracorporeal shock wave lithotripsy during endoscopic extraction of common bile duct stone. We report a 65 year-old man s case of treating incarcerated common bile duct stone with extracorporeal shock wave lithotripsy during a endoscopic sphincterotomy and balloon dilatation for endoscopic extraction of common bile duct stone. The incarcerated common bile duct stone was successfully removed.