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서울대학교병원에 입원한 환자 23만건의 주증상과 진단명 및 사망분석
진호준 ( Jin Ho Jun ),김성권 ( Kim Seong Gwon ) 대한내과학회 2003 대한내과학회지 Vol.65 No.5
Background : Chief complaint is the primary history, quoted from patient, and the starting point of medical service. Physicians need to know what complaints are in the society and how they would be going. We to described what symptoms patients had, what d
건강검진을 받은 대상에서 만성 신질환의 빈도와 관련 이상
진호준 ( Ho Jun Chin ),오국환 ( Kook Hwan Oh ),오윤규 ( Yoon Kyu Oh ),나기영 ( Ki Young Na ),주권욱 ( Kwon Wook Joo ),임춘수 ( Chun Soo Lim ),김연수 ( Yon Su Kim ),채동완 ( Dong Wan Chae ),안규리 ( Cu Rie Ahn ),한진석 ( Jin Suk Ha 대한신장학회 2007 Kidney Research and Clinical Practice Vol.26 No.2
목적: 말기 신부전을 포함한 만성 신질환은 세계적으로 지속적으로 증가하고 있으며 사회적인 의료 부담을 증가시키고 있으나 국내에서는 만성 신질환에 대한 대규모 역학조사 결과가 없는 실정이다. 방법: 분당서울대학교 병원에서 최근 2년간 건강검진을 받은 18세 이상의 14,856명을 대상군으로 정하였다. 미국신장협회의 만성 신질환 진단기준을 이용하였으며 사구체 여과율은 수정된 MDRD 공식으로 계산하였다. 결과: 대상군의 평균 사구체 여과율은 83.3 mL/min/1.73 m2이었으며 연령이 10년 증가할 때마다 5.0 mL/min/1.73 m2씩 감소하였다. 만성 신질환 1기에 해당되는 대상군은 3.2% 이었고 2기와 3기 이상인 군은 각각 9.4%와 3.5%이었다. 만성 신질환의 빈도는 고혈압 혹은 당뇨가 있는 군에서 없는 군보다 많았다. 만성 신질환과 연관된 고혈압, 심혈관계 질환 병력, 고요산혈증, 고칼륨혈증, 고인산혈증과 고중성지방혈증은 사구체 여과율이 정상인 만성 신질환인 경우에서도 그 빈도가 신질환이 없는 군에 비하여 높았다. 만성 신질환을 가진 대상군에서 만성 신질환을 인지하고 있었던 경우는 6.3%이었으며, 혈압과 혈당이 비신질환자에 비하여 적절하게 조절되는 비율이 낮았다. 결론: 건강검진을 받은 대상자들에서 만성 신질환과 유관 질환은 의미있게 높게 조사되었으나 신질환에 대한 인지도와 적절한 혈압과 혈당이 유지되는 비율이 비신질환자에 비하여 낮았다. Purpose: The prevalence of chronic kidney disease (CKD) is increasing in Korea. Considerable resources have been consumed for patients with CKD. This study investigated the prevalence, the associated disorders, and the awareness of CKD and the current status of appropriate control for blood pressure and blood sugar in subjects with CKD. Methods: We included 14,856 subjects who underwent a health check-up in Seoul National University Bundang Hospital during the last 2 years. We selected K/DOQI guideline of CKD. We used the modified MDRD equation to estimate the glomerular filtration rate (eGFR). Results: The mean eGFR was 83.3 mL/min/1.73m2 and it decreased with aging at the rate of 5 (mL/min/1.73m2)/10 years. The prevalences of CKD stage 1, stage 2, and stage more than 3 were 3.2%, 9.4%, and 3.5%, respectively. The prevalence of CKD was higher in subjects with hypertension or diabetes mellitus than in subjects without it. The CKD was associated with disorders of hypertension, cardiovascular diseases, hyperuricemia, hyperphosphatenemia, hyperkalemia, and hypertriglyceridemia. The prevalence of reported kidney disease was only 6.5% in subjects with eGFR less than 60 mL/min/1.73m2. The frequency of adequate control of blood pressure and blood sugar in subjects with CKD was lower than in subjects without CKD. Conclusion: The subjects were rarely aware of CKD whereas the frequencies of CKD and the associated diseases were considerably high. We have to pay more attention to diagnose and treat the CKD.
만성신부전에서 염류코르티코이드 투여가 포타시움 평형과 요 암모늄 배설에 미치는 효과
한진석(Jin Suk Han),이정상(Jung Sang Lee),김강석(Kang Seock Kim),허우성(Woo Seong Huh),전은실(Un Sil Jeon),이서진(Seo Jin Lee),주권욱(Kwon Wook Joo),김성권(Suhnggwon Kim),진호준(Ho Jun Chin),조윤숙(Yun Suk Cho) 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.2
N/A Mineralocorticoids influences on acid-base homeo-stasis by the regulation of urine acidification. But its mechanism of acion is not well known in human. This study compared the acid-base status and the indices of urine acidification before and after mineralocorticoid administration in human, and analyzed the effect of mineralocorticoids on human acid-base homeostasis. We administered 9a-fludrocortisone in 6 chronic renal failure patients and 6 normal controls 0.5mg daily for 7 days. The results were as following ' 1) After administration of 9a-fludrocortisone in patients group, serum aldosterone level changed from 120.2±71.0pg/mL to 44.8±32.2pg/mL(mean±SD, p< 0.05). Serum HCO- level was not changed. Urine ammonium excretion was incresed from 24.6±12.3 mmol/day to 43.7±19.0(p<0.05), but there were no change in urine pH and urine anion gap, Serum potassium level decreased from 5.5±0.7mBq/L to 4.1±0.5mEq/L(p<0.05), and TTKG increased from 3.9 to 8.9(p<0.05). 2) After administration of 9a-fludrocortisone in control group, serum aldosterone level changed from 99.7±44.5pg/mL to 25.1±3 mL(p<0.05). Serum HCO- level was not changed. Urine ammonium ex-cretion was incresed from 44.3±21.6mmoVday to 76.3±19.6(p<0.05), but there were no change in urine pH and urine anion gap. Serum potassium level decreased from 4.8±0.5mEq/L to 3.9±0.2mHq/L(p< 0.05), but there was no change in TTKG. 3) No patient or control showed any discomfort after 9-fludrocortisoneadministration, and there was no elevation in diastolic blood pressure, increase in body weight, electrolyte abnormality. In summary, after 9α-fludrocortisane administration, urinary ammonium excretion increased in both patients and control group, and this phenomenon occured with correction of hyperkalemia without urine pH change. This result implies urinary ammonium excretion increase by mineralocorticoid. In human increase in renal distal acidification by mineralocorticoid is due to increase in renal ammo- niagenesis rather than stimulation on proton excretion.
윤철환(Cheol-Hwan Yoon),진호준(Ho-Jun Jin),유승한(Seung-Han You) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.4
차량 조향 시 운전자 입력 토크의 복원 토크로 작용하는 셀프 얼라이닝 토크(SAT : self-aligning torque)를 실시간 산출하는 추정기를 개발하였다. 2차 조향시스템 모델을 기반으로 외란관측기를 활용하여 킹핀 토크(kingpin torque)를 우선적으로 식별하고 추정된 킹핀 토크에 포함되어 있는 좌/우 전륜 타이어(front wheels) 수직력에 의한 잭킹 토크(jacking torque)를 분리하여 최종적인 셀프 얼라이닝 토크를 추정하였다. 기존 연구와 차별점이라고 할 수 있는 잭킹 토크 보상을 통해 셀프 얼라이닝 토크 추정기의 성능을 개선하였고 추정 가능 영역을 확대하였다. 차량 동역학 해석 SW인 CARSIM과 실차 시험을 통해 횡경사 노면을 포함한 다양한 검증 조건에서 제안된 셀프 얼라이닝 토크 추정기의 성능을 검증하였다. The real-time self-aligning torque (SAT) estimator was developed to estimate self-aligning torque generated from tire cornering forces. First, a disturbance observer to identify kingpin torque was designed based on the secondorder steering system model. Then, self-aligning torque was calculated by the relation between kingpin torque and jacking torque. Thereafter, the real-time SAT estimator was improved in terms of performance and the region that can be estimated by a lateral acceleration sensor signal. As the final step, the proposed method was verified according to various driving conditions using CARSIM simulations and vehicle experimental tests.
신부전 만성도 평가에 있어 혈중 carbamylated hemoglobin 치의 유용성
김연수(Yon Su Kim),한진석(Jin Suk Han),진호준(Ho Jun Chin),이서진(Seo Jin Lee),조윤숙(Yun Suk Cho),안규리(Ahn Cu Rie),김성권(Suhng Gwon Kim),이정상(Jung Sang Lee),장인진(In Jin Jang),신상구(Sang Gu Shin),허우성(Woo Seong Huh) 대한내과학회 1996 대한내과학회지 Vol.51 No.3
Objective: Differentiation of acute from chronic renal failure is an important but difficult task in treating the azotemic patients. It is known that the degree of carbamylation reflects the duration and the severity of the uremia. To assess the usefulness in differentiating acute(ARF) from chronic reanl failure (CRF), we measured the carbamylated hemoglobin (CarHb). Methods: We measured CarHb(measured as ㎍ of carbamyl valine per g hemoglobin) prospectively in 64 patients with azotemia (24 ARF, 40 CRF) referred to the Seoul National University Hospital. High performance liquid chromatography was used for measuring CarHb. Thirteen normal controls were also studied to match 64 patients. Results: Patients with ARF had lower median (range) CarHb concentration than those with CRF [56.0(24.6-97.1) ㎍CV/gHb vs 120.4(31.7-286.5) p<0.01]. It is not different from normal control [56.0 (24.6-97.1) vs 40.9(19,9-62.9); p<0.05]. The ratio of CarHb to serum creatinine(mg/dl) was lower in ARF than in CRF [10.5(4.9-34A) vs 18.2(4.7-52.2) p<0.01]. The cut-off value for CarHb to be CRF is 80 ㎍CV/gHb(sensitivity 70%, specificity 71%, positive predictive value 80%). Conclusion: The carbamylated hemoglobin is useful in determining the chronicity of the renal failure and it could be of clinical value in deciding the further management.