Sang-hyeop Lee

목적 : 난치성 녹내장 환자에서 아메드 방수유출장치 삽입술의 장기 임상결과를 살펴보고, 일차와 이차 삽입술의 성공률을 비교하고자 한다. 대상과 방법 : 1995년 3월부터 2004년 9월까지 아메드 방수유출장치 삽입술을 시행받은 101명의 환자, 101안을 대상으로 후향적으로 연구하였다. 수술의 성공은 (1) 술 후 약물의 사용과 관계없이 5～21 mmHg의 안압이 유지되면서 안압이 술 전의 30% 이상 감소하고, (2) 안압이나 합병증으로 인한 시력감소가 없으며, (3) 추가적 녹내장수술을 시행하지 않은 것으로 정의하였다. 임상기록을 바탕으로 안압, 녹내장 약물의 투여, 합병증을 조사하였으며, Kaplan-Meier 생존분석을 이용하여 수술의 성공률을 비교하였다. 결과 : 술 후 1년, 3년, 5년, 7년의 누적 성공률은 일차 수술군에서 57.6%, 46.7%, 39.7%, 39.7%, 이차 수술군에서 67.8%, 58.1%, 52.4%, 43.5%였으며 두 군간의 통계학적으로 유

BACKGROUND AND AIMS: This study evaluated the incidence, determinants, and clinical impact of stent optimization after optical coherence tomography (OCT)-guided percutaneous coronary intervention (PCI) for complex lesions. METHODS: From the OCCUPI randomized trial investigating the impact of OCT guidance compared to angiography guidance in complex lesions, patients who underwent OCT-guided PCI with post-stenting OCT evaluations were enrolled and classified into two groups based on whether they m

Abstract Background Mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) syndrome is a multi-organ disorder resulting from mitochondrial DNA (mtDNA) mutations. We report a case of suspected MELAS syndrome that progressed to left ventricular dysfunction 24 years after an initial diagnosis of atrioventricular block (AVB). Case summary A 51-year-old woman was referred to heart failure clinic because of dyspnoea on exertion and progressive cardiomegaly. She had a dua

목적 : 반복각막진무름이 있는 환자에서 Coagulase negative Staphylococcus와 Stenotrophomonas maltophilia에 의해 혼합감염된 각막염 1례를 경험하였기에 이를 보고하는 바이다. 대상과 방법 : 29세 여환이 좌안의 1달동안 치유되지 않은 각막궤양으로 의뢰되었다. 결과 : 내원 당시 좌안 최대교정시력은 0.025 이었고, 각막의 6 시방향에 2×2 mm의 각막간질침윤 및 각막내피반이 관찰되었다. 배양검사 후 5% cefazolin, 1.4% tobramycin, 3.3% vancomycin, 0.125% amphotericin, NatacynⓇ을 점안하였으나, 배양검사에서 균은 동정되지 않았고, 병변의 악화가 관찰되어 결막편 시술을 시행하였다. 결막편이식후 병변의 호전이 없어 시행한 재배양검사상 Coagulase negative Staphylococcus와 Stenotrophomonas maltophilia가 동정되었으며, 항생제 감수성 검

To improve the ignitability of high energy aluminum powder, in this study, natural oxide films (alumina, Al2O3) were chemically removed and nickel coatings were deposited using an electroless method for nickel plating. The time-dependent degree of nickel deposition was confirmed qualitatively and quantitatively through surface analysis using scanning electron microscopy/energy dispersive spectroscopy. To characterize the nickel coatings, we also conducted elemental analysis by using X-ray diffra

ICE was comparable to TEE for guidance during TAVR for the composite clinical efficacy outcome, with similar incidences of moderate-to-severe PVR, new permanent pacemaker implantation, and major bleeding. These results suggest that ICE could be a safe and effective alternative echocardiographic modality to TEE for guiding TAVR.

High-temperature ignition is essential for the ignition and combustion of energetic metal fuels, including aluminum and magnesium particles which are protected by their high-melting-temperature oxides. A plasma torch characterized by an ultrahigh-temperature plasma plume fulfills such high-temperature ignition conditions. A new steam plasma igniter is designed and successfully validated by aluminum power ignition and combustion tests. The steam plasma rapidly stabilizes in both plasma and steam

Emission sampling and analysis of mercury at inlet and outlet of air pollution control devices (APCDs) have been conducted to provide information on mercury speciation, mass distribution and removal. Four municipal waste incinerators and two industrial waste incinerators, each with dry and wet types of APCDs, and two cement kilns were selected to measure mercury concentrations mainly at Stacks, as well as selected locations between the APCDs. Gaseous sampling was implemented in accordance with t