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( U Seok Noh ),( Joo Hark Yi ),( Sang Woong Han ),( Ho Jung Kim ) 대한전해질학회 2007 Electrolytes & Blood Pressure Vol.5 No.2
This study aimed to assess the effects of different dialysate bicarbonate concentrations in correcting acid-base imbalance in 53 stable hemodialysis patients in a university-hemodialysis unit. Three different bicarbonate concentrations were assigned, i.e. 25 mEq/L in 10, 30 mEq/L in 30, and 35 mEq/L in 13 patients. Blood gas analyses from arterial line blood samples before and after dialysis in the mid-week were performed for the determination of pH and serum bicarbonate (HCO3-) concentration. The mean values of predialysis arterial HCO3- were mildly acidotic in all 3 groups, but not significantly different among them, whereas those of post-dialysis arterial HCO3- were alkalotic, especially in the group of 35 mEq/L as compared with the other two groups. The mean blood pH was not significantly different among the 3 groups. As expected, there was a positive correlation between pre-dialysis pH and post-dialysis pH (r=0.45, p=0.001), and pre-dialysis HCO3- and post-dialysis HCO3- (r=0.58, p=0.000), but with a negative correlation between pre-dialysis HCO3- and the increment of intradialytic HCO3- following hemodialysis (r=-0.46, p=0.001). In conclusion, this study shows that the impact of conventional dialysate bicarbonate concentrations ranging from 25 to 35 mEq/L is not quite different on the mild degree of predialysis academia, but the degree of postdialysis alkalemia is more prominent in higher bicarbonate concentrations. Base supply by hemodialysis alone does not seem to be the main factor to determine the predialysis acidosis in end-stage renal disease patients on chronic maintenance hemodialysis.
Microscopic Age Estimation from the Anterior Cortex of the Femur in Korean Adults
Han, Seung-Ho,Kim, Sang-Hyun,Ahn, Yong-Woo,Huh, Gi-Yeong,Kwak, Dai-Soon,Park, Dae-Kyoon,Lee, U-Young,Kim, Yi-Suk Wiley (Blackwell Publishing) 2009 Journal of Forensic Sciences Vol.54 No.3
<P>The purpose of this study was to develop age-predicting equations from the anterior cortex of the femur of Korean adults. Seventy-two femoral samples (44 male and 28 female) were obtained from Korean cadavers and used to develop the equations. The thin sections (<100-microm thick) were prepared by manual grinding; the sections were not decalcified and were stained with Villanueva bone stain reagent. Analysis of covariance showed no significant differences in age-adjusted histomorphological variables between sexes. In stepwise regression analysis, osteon population density, average osteon area, and the most anterior cortical width were selected for an age-predicting equation which produced a high regression correlation (R(2) = 0.789). The average Haversian canal area was not significantly related to age for any specimen.</P>
Sex determination using upper limb bones in Korean populations
Je Hun Lee,Yi Suk Kim,U Young Lee,Dae Kyoon Park,Young Gil Jeong,Nam Seob Lee,Seung Yun Han,Kyung Yong Kim,Seung Ho Han 대한해부학회 2014 Anatomy & Cell Biology Vol.47 No.3
The purpose of this research is to establish metric standards for the determination of sex from the upper limb bones of Korean. We took a set of eleven measurements on each of 175 right sides of adult skeletons chosen at Korean sample. Classification accuracy dropped only one or two individuals when only vertical head diameter of humerus is used. Variables in relation with maximal length were less accurate than head diameter of humerus. Two variables were selected by the stepwise procedure: maximal length of humerus, vertical head diameter of humerus. The combined accuracy was 87%. This study of modern Korean skeletons underscores the need for population-specific techniques, not only for medicolegal investigations, but also for the study of population affinities and factors affecting bone configurations.
만성 신장병 환자에서 레닌-안지오텐신계 억제제와 칼륨교환수지 동시 사용이 혈청 칼륨에 미치는 영향
이주학 ( Joo Hark Yi ),윤여욱 ( Yeo Wook Yun ),노유석 ( U Seok Noh ),김은영 ( Eun Young Kim ),박재일 ( Jae Il Park ),한상웅 ( Sang Woong Han ),김호중 ( Ho Jung Kim ) 대한신장학회 2007 Kidney Research and Clinical Practice Vol.26 No.5
Purpose : This prospective study aimed to evaluate the safety and efficacy of potassium-exchange resin (PER, Kalimateⓡ or Argamateⓡ) for managing hyperkalemia induced by Renin-Angiotensin System (RAS) blockers in chronic kidney disease (CKD) patients without their discontinuation. Methods : Besides conservative remedies including low-potassium diet, all hyperkalemic CKD patients (n=21, [K] ≥5.6 mEq/L) received PER added on angiotensin-converting enzyme inhibitor (Moexipril, n=2) or angiotensin-receptor blocker (Irbesartan, n=19) with, at least, weekly monitoring of serum [K] if its level remains more than 5.5 mEq/L for more than 2 months (mean±SD, 6.8±5.9 mon; range, 2-26 mon). Results : Baseline serum [K] on RAS blocker alone (5.1±0.4 mEq/L; 4.2-6.3 mEq/L) increased to 6.0 ±0.4 mEq/L (p<0.05) before adding PER, and then it was significantly decreased to 5.3±0.6 mEq/L at the first clinic visit (p<0.05) and to 5.0±0.7 mEq/L at the last clinic visit (p<0.05) following the administration of PER added on RAS blocker. During the study period, GFR, serum creatinine and urinary protein excretion didn`t change significantly. Conclusion : The development of hyperkalemia on RAS blockers in CKD patients doesn`t necessarily lead to withdrawal of RAS blockers when the cautious add-on therapy of potassium-exchange resin with other conservative remedies launches, unless severe refractory hyperkalemia persists. II type 1 receptor blockers
저나트륨혈증 환자의 진단과 치료에서 연속적인 생리식염수 및 수분 부하검사와 Barsoum-Levine 공식의 유용성
이주학 ( Joo Hark Yi ),김원준 ( Won Jun Kim ),노유석 ( U Seok Noh ),김연재 ( Yeon Jae Kim ),고영선 ( Young Sun Ko ),한상웅 ( Sang Woong Han ),김호중 ( Ho Jung Kim ) 대한신장학회 2008 Kidney Research and Clinical Practice Vol.27 No.6
In hyponatremic patients, the assessment of extracellular fluid volume plays an essential step in diagnosing the etiology of hyponatremia and deciding how to manage it. Although various laboratory tests and diagnostic procedures have been developed for differential diagnosis of hyponatremia, there still are limits to the evaluation of the status of extracellular fluid volume due to the data that overlaps each other, leading to the difficulty in diagnosing between euvolemia and hypovolemia. Also, there is no consensus about how to guide the type and amount of fluid therapy despite many formulas including Adrogue-Madias and Barsoum-Levine formulas have been suggested. Hereby, we are reporting two hyponatremic patients (102 and 105 mEq/L) admitted simultaneously with indistinct volume status on initial clinical and laboratory examinations, but were clarified as euvolemic hyponatremia (syndrome of inappropriate antidiuretic hormone secretion) in one and hypovolemic hyponatremia in the other case after sequential intravenous saline (2 L over 24 hrs) and oral water (20 mL/kg) loading tests. When serum sodium values calculated by the above-mentioned two formulas were compared with actually measured ones during saline loading test in these cases, the Barsoum-Levine formula revealed almost no discrepancy between both the values while the Adrogue-Madias formula underestimated the measured value.