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증례 : 신장 ; 신이식 환자에서 성공적으로 치료된 BK 바이러스 관련 출혈성 방광염
박시형 ( Sihyung Park ),이가희 ( Ga Hee Lee ),박봉수 ( Bong Soo Park ),진규복 ( Kubok Jin ),박진한 ( Jin Han Park ),강진두 ( Jin Du Kang ),김양욱 ( Yang Wook Kim ) 대한내과학회 2015 대한내과학회지 Vol.89 No.6
Hemorrhagic cystitis is defined as diffuse mucosal inflammation of the urinary bladder that presents with gross hematuria. A variety of factors, including chemotherapeutic agents, radiation therapy and infection, can cause hemorrhagic cystitis. Among them, BK virus-associated hemorrhagic cystitis is common in patients who have undergone stem cell transplantation but relatively rare in kidney transplantation patients. Here, we present the case of a kidney-transplant patient with BK virus-associated hemorrhagic cystitis and interstitial nephritis who was successfully treated with leflunomide and ciprofloxacin. (Korean J Med 2015;89:704-708)
모터사이클 디스크 브레이크의 온도 및 열변형 해석을 통한 형상설계
최원락(Wonrak Choi),박시형(Sihyung Park),이성수(Sungsoo Lee) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_2
Ventilated disc of the motorcycle brake system have friction surfaces which have been machined with rows of vents to improve cooling, reduce weight and provide an escape route for dirt and gasses which can be wedged between the pads and disc. This study presents thermal behaviors of a ventilated disc and thermal effect of the vents on the friction surfaces such as surface temperature distributions and cooling abilities during the brake application using transient thermal transfer analysis and thermal deformation analysis. This study suggests a new model of ventilated disc which has expanded convection area improving more cooling ability and reduced volume of vents increasing thermal conductivity of the disc.<br/>
Aerococcus urinae에 의한 합병된 요로감염 패혈증
허창민 ( Chang Min Heo ),조경민 ( Kyeong Min Jo ),장지훈 ( Ji Hoon Jang ),이유진 ( Yoo Jin Lee ),박봉수 ( Bong Soo Park ),김양욱 ( Yang Wook Kim ),박시형 ( Sihyung Park ) 대한내과학회 2016 대한내과학회지 Vol.91 No.2
요양 시설에서 지내던 83세 여성이 요로감염으로 입원하였으며 혈액 배양의 염기서열 분석에서 Aerococcus urinae가 동정되었다. 항생제 감수성 결과에 따라 ceftriaxone을 총 3주간 투여하였고 요로결석은 자연적으로 배출되어 환자는 합병증 없이 완치되었다. 오염균으로 오인될 수 있는 A. urinae는 요로감염, 심내막염을 비롯한 심각한 감염 등을 일으킬수 있는 원인 균임을 인지해야 한다. Aerococcus urinae is a gram-positive coccus that produces alpha-hemolysis on blood agar and is negative for catalase. A. urinae can often be misidentified as a streptococcus, staphylococcus, or enterococcus by most commercial identification systems. Although A. urinae is a rarely reported human pathogen, it can be fatal in some cases. Here we report on a case of urosepsis caused by A. urinae, identified by 16S rRNA gene sequencing in a patient with ureter stones and hydronephrosis, for the first time in Korea. It is important for physicians to consider A. urinae as a potential pathogen and to prescribe the most suitable antibiotics to ensure the best outcome. (Korean J Med 2016;91:229-232)
김태홍 ( Taehong Kim ),김태형 ( Tae Hyung Kim ),이원혁 ( Won Hyuk Lee ),이유진 ( Yoo Jin Lee ),박시형 ( Sihyung Park ),박봉수 ( Bong Soo Park ),김양욱 ( Yang Wook Kim ) 대한내과학회 2016 대한내과학회지 Vol.91 No.3
대장 내시경 검사에서 장 정결은 필수적인 조건이며, 이를 위해선 장 정결제가 반드시 필요하고 정결제는 각기 다른 특성을 지니고 있다. 따라서 정상 신기능을 가진 환자라도 대장 내시경의 목적 및 환자의 증상에 따라 장 정결제 선택에 주의를 해야 할 것으로 생각된다. Most reported cases of hypermagnesemia are related to laxative abuse and impaired renal function, while hypermagnesemia is uncommon without iatrogenic magnesium administration and decreased renal function. Magnesium-containing bowel-cleansing agents are widely used before colonoscopy, usually without complications. However, we experienced a case of symptomatic hypermagnesemia with normal renal function after using a bowel-cleansing agent. A 74-year-old man with normal renal function complained of lethargy and motor weakness after taking a bowel-cleansing agent containing 14 grams of magnesium before a colonoscopy for hematochezia. His magnesium level was 12 mg/dL. Fluid stasis in the gut due to colonic obstruction might have caused the hypermagnesemia. He was treated successfully with a bowel enema and intravenous calcium. We should be cautious when prescribing drugs for colonoscopy if colonic obstruction is suspected. (Korean J Med 2016;91:306-310)