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유지 혈액투석 환자에서 단일풍선 소장내시경으로 치료한 소장출혈
김정엽 ( Jeong Yup Kim ),왕준광 ( Joon Kwang Wang ),김미나 ( Mi Na Kim ),김선철 ( Sun Chul Kim ),김혜원 ( Hye Won Kim ),이영모 ( Young Mo Lee ),권영주 ( Young Joo Kwon ),표희정 ( Heui Jung Pyo ),박자인 ( Ja In Park ),오주연 ( Joo 대한신장학회 2008 Kidney Research and Clinical Practice Vol.27 No.6
Anemia is a common complication of hemodialysis. It reduces the quality of life and is recognized as adverse risk factor. The cause of anemia in CKD (chronic kidney disease) include lack of erythropoietin, gastrointestinal (GI) bleeding, hypothyroidism, hidden infection, and blood loss in hemodialysis. GI bleeding is not unusual complication in patient on maintenance hemodialysis, caused by uremia, medicine (NSAIDS, antiplatelet agents, anticoagulants), angiodysplasia, and ulcer. In CKD patients, GI bleeding is found in various sites over the whole bowel. Small bowel bleeding is one of the most common causes of obscure GI bleeding and constitutes 2-10% of all GI bleeding. Regarding the small bowel bleeding, diagnosis and treatment are much improved recently with the help of wireless capsule endoscopy and double or single balloon enteroscopy. We report a case of GI bleeding due to erosion of small bowel, which was diagnosed and treated with the single-balloon enteroscopy in patients on maintenance hemodialysis.
이차성부갑상샘항진증을 가진 만성신부전 환자에서 하악골 종대 및 폐, 위점막 석회 침착 1예
김정엽 ( Jeong Yup Kim ),김정선 ( Jeong Seon Kim ),왕준광 ( Joon Kwang Wang ),박상원 ( Sang Won Park ),이영모 ( Young Mo Lee ),이지은 ( Ji Eun Lee ),전은실 ( Eun Sil Jeon ),표희정 ( Heui Jung Pyo ),권영주 ( Young Joo Kwon ),이재복 대한신장학회 2010 Kidney Research and Clinical Practice Vol.29 No.2
Secondary hyperparathyroidism is one of the most common complications of patients with chronic kidney disease (CKD). Mandibular enlargement, metastatic pulmonary calcification, and gastric mucosal calcinosis are rare complications in these patients. The defect of calcium and phosphorus metabolism may precipitate pathologic calcification at diverse organs and soft tissue, and change bone architecture. In case of involving periarticular area, patients usually present with localized swelling, pain, and reduced mobility in affected sites. However, in case of organ involvement, except in an advanced stage of disease, there are no specific symptoms. Among these patients, treatment strategies include tight control of calcium and phosphate levels, parathyroidectomy for hyperparathyroidism, renal transplantation, and local excision of calcific lesions. We report a case of mandibular enlargement, metastatic pulmonary calcification, and gastric mucosal calcinosis due to CKD with improvement 3 months after medical and surgical treatment.
김현(Hyun Kim),권정관(Jeong-Gwan Kwon),송상영(Sang-Young Song),강석일(Seok-Il Kang),김정엽(Jung-Yup Kim) 제어로봇시스템학회 2015 제어·로봇·시스템학회 논문지 Vol.21 No.5
This paper describes the development of a chest-wearable robot that can efficiently perform self walking rehabilitation without a helper. The features of the developed robot are divided into three parts. First, as a mechanical characteristic, the conventional elbow crutch is attached at the forearm. However, the proposed robot is attached to the patient"s chest, enabling them to feel free to use their hands and eliminate the burden of the arms. Second, as a characteristic of the driving algorithm, pressure sensors attached to the chest automatically perceive the patient’s walking intention and move the robot-leg thereafter. Also, for safety, it stops operating when an obstacle is found in front of the patient by using ultrasonic sensors and generates a beeping sound. Finally, by using the scotch yoke mechanism, supporting legs are moved up and down using a rotary servo motor without excessive torque that is generated by large ground reaction forces. We showed that the developed robot can effectively perform self walking rehabilitation through walking experiments, and its performance was verified using Electromyograph (EMG) sensors.
김욱중(Ook Joong Kim),윤석호(Seok-Ho Yoon),홍용주(Yong Ju Hong),김정엽(Kim Jeong Yup),강신일(Sin-Il Kang) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Fluid flow and structural analyses of an electronic expansion valve (EEV) using CO2 as a working refrigerant are carried out to estimate the mass flow rate and maximum stress. An engineering sample EEV that the orifice diameter is 1.8 mm was fabricated. The mass flow rates were measured at various EEV inlet temperatures and pressures for several EEV openings using experimental heat pump system. The sample EEV has over 35 ㎫ burst pressure and the maximum mass flow rate of CO2 through the EEV increased to 100 g/s at full opening condition.