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Now showing items 49 - 61 of 61

  • Proteinuria and hematuria are associated with acute kidney injury and mortality in critically ill patients: a retrospective observational study.

    Han, Seung Seok   Ahn, Shin Young   Ryu, Jiwon   Baek, Seon Ha   Chin, Ho Jun   Na, Ki Young   Chae, Dong-Wan   Kim, Sejoong  

    BACKGROUND: Proteinuria and hematuria are both important health issues; however, the nature of the association between these findings and acute kidney injury (AKI) or mortality remains unresolved in critically ill patients.; METHODS: Proteinuria and hematuria were measured by a dipstick test and scored using a scale ranging from a negative result to 3+ in 1883 patients admitted to the intensive care unit. AKI was defined according to the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines. The odds ratios (ORs) for AKI and 3-year mortality were calculated after adjustment for multiple covariates according to the degree of proteinuria or hematuria. For evaluating the synergistic effect on mortality among proteinuria, hematuria, and AKI, the relative excess risk due to interaction (RERI) was used.; RESULTS: Proteinuria and hematuria increased the ORs for AKI: the ORs of proteinuria were 1.66 (+/-), 1.86 (1+), 2.18 (2+), and 4.74 (3+) compared with non-proteinuria; the ORs of hematuria were 1.31 (+/-), 1.58 (1+), 2.63 (2+), and 2.52 (3+) compared with non-hematuria. The correlations between the mortality risk and proteinuria or hematuria were all significant and graded (Ptrend<0.001). There was a relative excess risk of mortality when both AKI and proteinuria or hematuria were considered together: the synergy indexes were 1.30 and 1.23 for proteinuria and hematuria, respectively.; CONCLUSIONS: Proteinuria and hematuria are associated with the risks of AKI and mortality in critically ill patients. Additionally, these findings had a synergistic effect with AKI on mortality.=20
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  • Outcomes of predialysis nephrology care in elderly patients beginning to undergo dialysis.

    Baek, Seon Ha   Ahn, Shin young   Lee, Sung Woo   Park, Youn Su   Kim, Sejoong   Na, Ki Young   Chae, Dong-Wan   Kim, Suhnggwon   Chin, Ho Jun  

    BACKGROUND: The proportion of elderly patients beginning to undergo dialysis is increasing globally. Whether early referral (ER) of elderly patients is associated with favorable outcomes remains under debate. We investigated the influence of referral timing on the mortality of elderly patients.; METHODS: We retrospectively assessed mortality in 820 patients aged =E2=89=A570 years with end-stage renal disease (ESRD) who initiated hemodialysis at a tertiary university hospital between 2000 and 2010. Mortality data was obtained from the time of dialysis initiation until December 2010. We assigned patients to one of two groups according to the time of their first encounters with nephrologists: ER (=E2=89=A5 3 months) and late referral (LR; < 3 months).; RESULTS: During a mean follow-up period of 25.1 months, the ER group showed a 24% reduced risk of long-term mortality relative to the LR group (HR =3D 0.760, P =3D 0.009). Rate of reduction in 90-day mortality for ER patients was 58% (HR =3D 0.422, P=3D0.012). However, the statistical significance of the difference in mortality rates between ER and LR group was not observed across age groups after 90 days. Old age, LR, central venous catheter, high white blood cell count and corrected Ca level, and lower levels of albumin, creatinine, hemoglobin, and sodium were significantly associated with increased risk of mortality.; CONCLUSIONS: Timely referral was also associated with reduced mortality in elderly ESRD patients who initiated hemodialysis. In particular, the initial 90-day mortality reduction in ER patients contributed to mortality differences during the follow-up period.=20
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  • The clinical association of the blood pressure variability with the target organ damage in hypertensive patients with chronic kidney disease.

    Ryu, Jiwon   Cha, Ran-Hui   Kim, Dong Ki   Lee, Ju Hyun   Yoon, Sun Ae   Ryu, Dong Ryeol   Oh, Ji Eun   Kim, Sejoong   Han, Sang-Youb   Lee, Eun Young   Kim, Yon Su  

    It is known that blood pressure variability (BPV) can independently affect target organ damage (TOD), even with normal blood pressure. There have been few studieson chronic kidney disease (CKD) patients. We evaluated the relationship between BPV and TOD in a cross-sectional, multicenter study on hypertensive CKD patients. We evaluated 1,173 patients using 24-hr ambulatory blood pressure monitoring. BPV was defined as the average real variability, with a mean value of the absolute differences between consecutive readings of systolic blood pressure. TOD was defined as left ventricular hypertrophy (LVH) (by the Romhilt-Estes score =E2=89=A54 in electrocardiography) and kidney injury (as determined from an estimated glomerular filtration rate [eGFR]<30 mL/min/1.73 m(2) and proteinuria).The mean BPV of the subjects was 15.9=C2=B14.63 mmHg. BPV displayed a positive relationship with LVH in a univariate analysis and after adjustment for multi-variables (odds ratio per 1 mmHg increase in BPV: 1.053, P=3D0.006). In contrast, BPV had no relationship with kidney injury. These data suggest that BPV may be positively associated with LVH in hypertensive CKD patients.=20
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  • Safety and efficacy of PG102P for the control of pruritus in patients undergoing hemodialysis (SNUG trial): study protocol for a randomized controlled trial

    Kim, Yong Chul   Park, Jae Yoon   Oh, Sohee   Cho, Jang-Hee   Chang, Jae Hyun   Choi, Dae Eun   Park, Jung Tak   Lee, Jung Pyo   Kim, Sejoong   Kim, Dong Ki   Ryu, Dong-Ryeol   Lim, Chun Soo  

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  • Predictive value of echocardiographic parameters for clinical events in patients starting hemodialysis.

    Han, Seung Seok   Cho, Goo-Yeong   Park, Youn Su   Baek, Seon Ha   Ahn, Shin Young   Kim, Sejoong   Chin, Ho Jun   Chae, Dong-Wan   Na, Ki Young  

    Echocardiographic parameters can predict cardiovascular events in several clinical settings. However, which echocardiographic parameter is most predictive of each cardiovascular or non-cardiovascular event in patients starting hemodialysis remains unresolved. Echocardiography was used in 189 patients at the time of starting hemodialysis. We established primary outcomes as follows: cardiovascular events (ischemic heart disease, cerebrovascular disease, peripheral artery disease, and acute heart failure), fatal non-cardiovascular events, all-cause mortality, and all combined events. The most predictable echocardiographic parameter was determined in the Cox hazard ratio model with a backward selection after the adjustment of multiple covariates. Among several echocardiographic parameters, the E/e' ratio and the left ventricular end-diastolic volume (LVEDV) were the strongest predictors of cardiovascular and non-cardiovascular events, respectively. After the adjustment of clinical and biochemical covariates, the predictability of E/e' remained consistent, but LVEDV did not. When clinical events were further analyzed, the significant echocardiographic parameters were as follows: s' for ischemic heart disease and peripheral artery disease, LVEDV and E/e' for acute heart failure, and E/e' for all-cause mortality and all combined events. However, no echocardiographic parameter independently predicted cerebrovascular disease or non-cardiovascular events. In conclusion, E/e', s', and LVEDV have independent predictive values for several cardiovascular and mortality events. =20
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  • Hyperuricemia is associated with acute kidney injury and all-cause mortality in hospitalized patients

    Kang, Min Woo   Chin, Ho Jun   Joo, Kwon-Wook   Na, Ki Young   Kim, Sejoong   Han, Seung Seok  

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  • Non-Linear Relationship between Serum 25-Hydroxyvitamin D and Hemoglobin in Korean Females: The Korean National Health and Nutrition Examination Survey 2010-2011

    Han, Seung Seok   Kim, Myounghee   Kim, Ho   Lee, Su Mi   Oh, Yun Jung   Lee, Jung Pyo   Kim, Sejoong   Joo, Kwon Wook   Lim, Chun Soo   Kim, Yon Su  

    Background: Anemia and vitamin D deficiency are both important health issues; however, the nature of the association between vitamin D and either hemoglobin or anemia remains unresolved in the general population.Methods: Data on 11,206 adults were obtained from the fifth Korean National Health and Nutritional Examination Survey. A generalized additive model was used to examine the threshold level for relationship between serum 25-hydroxyvitamin D [25(OH)D] and hemoglobin levels. A multivariate logistic regression for anemia was conducted according to 25(OH)D quintiles. All analyses were stratified according to sex and menstrual status.Results: The generalized additive model confirmed a threshold 25(OH)D level of 26.4 ng/mL (male, 27.4 ng/mL; premenopausal females, 11.8 ng/mL; postmenopausal females, 13.4 ng/mL). The threshold level affected the pattern of association between 25(OH)D and anemia risk: the odds ratio of the 1st quintile but not the 2nd, 3rd, and 4th quintiles were significantly different from the 5th quintile in both premenopausal and postmenopausal females, however there was no obvious trend in males.Conclusions: This population-based study demonstrated a non-linear relationship with a threshold effect between serum 25(OH)D and hemoglobin levels in females. Further interventional studies are warranted to determine whether the appropriate level of hemoglobin can be achieved by the correction of vitamin D deficiency.
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  • Use of a New Connector Decreases Peritoneal Dialysis-Related Peritonitis

    Kim, Youngsu   Song, Young Rim   Kim, Jwa-Kyung   Kim, Hyung Jik   Kim, Sejoong   Kim, Sung Gyun  

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  • Permissive fluid volume in adult patients undergoing extracorporeal membrane oxygenation treatment.

    Kim, Hyoungnae   Paek, Jin Hyuk   Song, Joo Han   Lee, Hajeong   Jhee, Jong Hyun   Park, Seohyun   Yun, Hae-Ryong   Kee, Youn Kyung   Han, Seung Hyeok   Yoo, Tae-Hyun   Kang, Shin-Wook   Kim, Sejoong   Park, Jung Tak  

    BACKGROUND: Extracorporeal membrane oxygenation (ECMO) is a cardiorespiratory support technique for patients with circulatory or pulmonary failure. Frequently, large-volume fluid resuscitation is needed to ensure sufficient extracorporeal blood flow in patients initiating ECMO. However, excessive overhydration is known to increase mortality in critically ill patients. Therefore, in order to define a tolerant volume range in patients undergoing ECMO treatment, the association between cumulative fluid balance (CFB) and outcome was evaluated in patients undergoing ECMO.; METHODS: This retrospective multicenter cohort study was conducted with 723 patients who underwent ECMO in three tertiary care hospitals between 2005 and 2016. CFB was calculated as total fluid input minus total fluid output during the first 3days from ECMO initiation. The patients were divided into groups that initiated ECMO owing to cardiovascular disease (CVD)-related or non-cardiovascular disease (non-CVD)-related causes. The primary endpoint was mortality within 90days after ECMO commencement.; RESULTS: Totals of 406 and 317 patients were included in the CVD and non-CVD groups, respectively. In the CVD group, the mean age was 58.4=C2=B117.7years, and 68.2% were male. The mean age was 55.7=C2=B115.7years, and 65.3% were male in the non-CVD group. The median CFB values were 64.7 and 53.5ml/kg in the CVD and non-CVD groups, respectively. Multivariable analysis using Cox proportional hazards models revealed a significantly increased risk of 90-day mortality in patients with higher CFB values in both the CVD and non-CVD groups. However, the risks were elevated only in the two CFB quartile groups with the largest CFB amounts. Cubic spline models showed that mortality risk began to increase significantly when CFB was 82.3ml/kg in the CVD group. In patients with respiratory diseases, the mortality risk increase was significant for those with CFB levels above 189.6ml/kg.; CONCLUSIONS: Mortality risk did not increase until a certain level of fluid overload was reached in patients undergoing ECMO. Adequate fluid resuscitation is critical to improving outcomes in these patients.=20
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  • Age,sex,and the association of chronic kidney disease with all-cause mortality in Buddhist priests An analysis of the standardized mortality ratio from the Korean Buddhist priests cohort

    Kim, Hyo Jin   Kim, Yunmi   Kim, Sejoong   Chin, Ho Jun   Lee, Hajeong   Lee, Jung Pyo   Kim, Dong Ki   Oh, Kook-Hwan   Joo, Kwon Wook   Kim, Yon Su   Nah, Deuk-Young   Shin, Sung Joon   Kim, Kyung Soo   Park, Jae Yoon   Yoo, Kyung Don  

    Buddhist priests lead a unique lifestyle, practicing asceticism, with a vegetarian diet. Such behavior may have an impact on clinical outcomes. Hence, we explored the mortality among Korean Buddhist priests as compared with the general population. This study is a single-center, retrospective study. Among the 3867 Buddhist priests who visited Dongguk University Gyeongju Hospital between January 2000 and February 2016, 3639 subjects were available for mortality data from Statistics Korea. Standardized mortality ratio (SMR) was computed for all causes of death and compared with the general population using national statistics in Korea. Information regarding end-stage renal disease (ESRD) was investigated from the Korean Society of Nephrology registry. Among the 3639 patients, the baseline laboratory results were obtained in 724 patients. Chronic kidney disease (CKD) was defined as dipstick proteinuria >=3D 1 or an estimated glomerular filtration rate <60mL/min/1.73m(2). The mean age was 50.0 +/- 12.5 years, and 51.0% were men. During the follow-up period for 31.1 +/- 35.6 months, 55 (7.6%) patients died. During the follow-up period, 3 (0.4%) and 23 (3.2%) patients developed ESRD and urinary stone, respectively. The SMR for all causes of death was 0.76 (95% confidence interval [CI] 0.57-0.99; men 0.91, 95% CI 0.65-1.23; women 0.52, 95% CI 0.28-0.87). Among 724 patients, 74 (10.2%) patients had CKD. The SMR for non-CKD patients (0.61, 95% CI 0.43-0.85) was significantly lower than the general population. Female and patients older than 50 years (0.74, 95% CI 0.55-0.98) had a significantly lower SMR. In the Cox proportional hazards model with adjustment, older age (adjusted HR 1.04, 95% CI 1.10-1.07) and presence of CKD (adjusted HR 2.55, 95% CI 1.07-6.06) were independently associated with increased all-cause mortality. Buddhist priests and especially Buddhist priests without CKD showed a significantly lower mortality compared with the general population.
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  • Urinary adiponectin and albuminuria in non-diabetic hypertensive patients: an analysis of the ESPECIAL trial.

    Han, Seung Seok   Bae, Eunjin   Ahn, Shin Young   Kim, Sejoong   Park, Jung Hwan   Shin, Sung Joon   Lee, Sang Ho   Choi, Bum Soon   Chin, Ho Jun   Lim, Chun Soo   Kim, Suhnggwon   Kim, Dong Ki  

    BACKGROUND: Although adiponectin levels have been reported to be correlated with albuminuria, this issue remains unresolved in non-diabetic hypertensive subjects, particularly when urinary adiponectin is considered.; METHODS: Urinary adiponectin levels were examined using an enzyme-linked immunosorbent assay in 229 participants. who used olmesartan as a hypertensive agent. Their albuminuria levels were measured for 16 weeks after randomization and initiation of conventional or intensive diet education. Linear or logistic regression models were applied, as appropriate, to explore the relationship with albuminuria itself or its response after the intervention.; RESULTS: Urinary adiponectin levels were positively related to baseline albuminuria level (r =3D 0.529). After adjusting for several covariates, the adiponectin level was associated with the albuminuria level (beta =3D 0.446). Among the 159 subjects with baseline macroalbuminuria, the risk of consistent macroalbuminuria (> 300 mg/day) at 16 weeks was higher in the 3(rd) tertile of adiponectin than in the 1(st) tertile (odds ratio =3D 6.9), despite diet education. In contrast, among all subjects, the frequency of the normoalbuminuria achievement (< 30 mg/day) at 16 weeks was higher in the 1(st) tertile than in the 3(rd) tertile (odds ratio =3D 13.0).; CONCLUSIONS: Urinary adiponectin may be a useful biomarker for albuminuria or its response after treatment in non-diabetic hypertensive patients.=20
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  • The Role of TNF Superfamily Member 13 in the Progression of IgA Nephropathy

    Han, Seung Seok   Yang, Seung Hee   Choi, Murim   Kim, Hang-Rae   Kim, Kwangsoo   Lee, Sangmoon   Moon, Kyung Chul   Kim, Joo Young   Lee, Hajeong   Lee, Jung Pyo   Jung, Ji Yong   Kim, Sejoong   Joo, Kwon Wook   Lim, Chun Soo   Kang, Shin-Wook   Kim, Yon Su  

    TNF superfamily member 13 (TNFSF13) has been identified as a susceptibility gene for IgA nephropathy in recent genetic studies. However, the role of TNFSF13 in the progression of IgA nephropathy remains unresolved. We evaluated two genetic polymorphisms (rs11552708 and rs3803800) and plasma levels of TNFSF13 in 637 patients with IgA nephropathy, and determined the risk of ESRD according to theses variable. Neither of the examined genetic polymorphisms associated with a clinical outcome of IgA nephropathy. However, high plasma levels of TNFSF13 increased the risk of ESRD. To explore the causal relationship and underlying mechanism, we treated B cells from patients (n=3D21) with or without recombinant human TNFSF13 (rhTNFSF13) and measured the expression of IgA and galactose-deficient IgA (GdIgA) using ELISA and flow cytometry. Treatment with rhTNFSF13 significantly increased the total IgA level among B cells, and TNFSF13 receptor blockade abrogated this increase. Furthermore, the absolute levels of GdIgA increased with rhTNFSF13 treatment, but the total IgA-normalized levels did not change. Both RNA sequencing and quantitative PCR results showed that rhTNFSF13 did not alter the expression of glycosyltransferase enzymes. These results suggest that high plasma TNFSF13 levels associate with a worse prognosis of IgA nephropathy through the relative increase in GdIgA levels.
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  • A low-salt diet increases the estimated net endogenous acid production in nondiabetic chronic kidney disease patients treated with angiotensin receptor blockade.

    Baek, Seon Ha   Kim, Sejoong   Kim, Dong Ki   Park, Jung Hwan   Shin, Sung Joon   Lee, Sang Ho   Choi, Bum Soon   Chin, Ho Jun   Kim, Suhnggwon   Lim, Chun Soo  

    BACKGROUND/AIMS: An acid-base imbalance precedes renal disease progression in patients with chronic kidney disease (CKD). Little is known about the effects of a low-salt diet (LSD) on net endogenous acid production (NEAP) levels in CKD patients using angiotensin receptor blockade.; METHODS: We enrolled a total of 202 nondiabetic CKD patients who underwent an 8-week treatment with olmesartan from the original trial [Effects of Low Sodium Intake on the Antiproteinuric Efficacy of Olmesartan in Hypertensive Patients with Albuminuria (ESPECIAL) trial: NCT01552954]. The patients were divided into good- and poor-LSD-compliance groups.; RESULTS: During the interventional 8 weeks, the NEAP in the good-compliance group increased compared to the control group (12.9 =C2=B1 32.0 vs. -2.0 =C2=B1 35.0 mmol/day, p =3D 0.002). NEAP was positively associated with the good-LSD-compliance group in the fully adjusted analyses (r =3D 0.135, p =3D 0.016). The additional reduction of 2.39 g/day of protein intake with a reduction of 1 g/day of salt intake did not increase the NEAP under angiotensin II receptor blockade (ARB) treatment with an LSD (r =3D 0.546, p < 0.001).; CONCLUSION: We found that an LSD may increase the NEAP in nondiabetic CKD patients using ARB, which suggests that additional acid producing-protein restriction should be required to prevent the NEAP from rising. =C2=A9 2014 S. Karger AG, Basel.
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