High Peritoneal Clearance of Small Molecules Did Not Provide Low Serum β2–Microglobulin Concentrations in Peritoneal Dialysis Patients

2003 ◽  
Vol 23 (2_suppl) ◽  
pp. 34-36 ◽  
Author(s):  
Suguru Yamamoto ◽  
Akio Kasai ◽  
Hisaki Shimada
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Small Molecules ◽  
Residual Renal Function ◽  
High Flux ◽  
Synthetic Membranes ◽  
Significant Difference ◽  
Continuous Cycling ◽  
Peritoneal Permeability ◽  
The Relationship

Objective Although early reports demonstrated that serum β2-microglobulin (s-β2m) concentrations in patients on peritoneal dialysis (PD) were lower than those in patients on hemodialysis (HD), more recent studies demonstrated lower s-β2m concentrations in HD patients treated mainly with high-flux synthetic membranes. We therefore compared s-β2m concentrations between patients on PD and on HD, and also analyzed the relationship between s-β2m concentrations and other parameters in patients on PD. Patients and Methods We investigated 24 patients who had been undergoing PD [11 on continuous ambulatory peritoneal dialysis, 13 on continuous cycling peritoneal dialysis] for 4.3 ± 2.7 years, and 24 patients who had been undergoing HD with high-flux synthetic membranes for 6.1 ± 3.2 years. Concentrations of s-β2m in the PD patients were compared to concentrations in the HD patients. In patients on PD, we also analyzed the relationship between s-β2m concentration and other parameters, including residual renal function, total weekly Kt/V urea, total weekly creatinine clearance (CCr), and dialysis schedules. Results We found no significant difference in s-β2m concentrations between the PD and HD patients (33.6 ± 10.4 mg/L vs 30.3 ± 10.5 mg/L respectively). Concentrations of s-β2m in PD patients rose with PD duration and were significantly inversely correlated with residual renal function ( r = –0.71, p < 0.0001). Unexpectedly, concentrations of s-β2m in anuric PD patients rose as peritoneal CCr increased. And most of the patients with high s-β2m levels fell into the high or high-average transport categories according to a peritoneal equilibration test. Conclusions Concentrations of s-β2m in patients on PD did not differ significantly from concentrations in HD patients who were using high-flux synthetic membranes. The contribution of residual renal function to removal of β2m was more important than the contribution of peritoneal clearance. High peritoneal clearance of small molecules did not result in low s-β2m concentrations, especially in anuric patients with accelerated peritoneal permeability.

The Relationship between Kt/VUrea and Npna in Anuric Peritoneal Dialysis Patients: A Comparison with Predialysis Patients

2001 ◽  
Vol 21 (5) ◽  
pp. 509-515 ◽  
Author(s):  
◽  
Maarten A.M. Jansen ◽  
Johanna C. Korevaar ◽  
Friedo W. Dekker ◽  
Kitty J. Jager ◽  
...  
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Residual Renal Function ◽  
Control Group ◽  
Dialysis Patients ◽  
Urea Clearance ◽  
Linear Relationships ◽  
Significant Difference ◽  
Urine Production ◽  
The Relationship

Objective It is unknown whether a given level of urea clearance by the native kidneys provides better or similar control of uremia than the same level of urea clearance by continuous peritoneal dialysis (PD). More insight into possible differences between renal and peritoneal urea clearances is warranted. Therefore, we investigated the relationship between Kt/Vurea and protein equivalent of total nitrogen appearance normalized to body weight (nPNA), the relationship between urea clearance and creatinine appearance, and other nutritional parameters in PD patients without residual renal function, and in predialysis end-stage renal disease patients. Patients All patients participated in the Netherlands Cooperative Study on the Adequacy of Dialysis. This is a prospective cohort study of incident dialysis patients, in whom regular assessments of renal function are done. A group of 75 PD patients was identified at the first follow-up assessment in which their urine production was less than 100 mL/day. These patients were considered the anuric group. This group was compared with a control group of 97 predialysis patients studied 0 – 4 weeks before the start of dialysis treatment. Results Linear relationships were present between Kt/Vurea and nPNA, in both the predialysis patients and the anuric PD patients. A significant difference was present between the slopes of the two regression lines (0.40 vs 0.18, p = 0.007). When Kt/Vurea exceeded 1.3/week, a given level of Kt/Vurea was associated with a higher nPNA in predialysis than in anuric PD patients. Similar relationships were found between Kturea and PNA. Kturea was also significantly related to urine or dialysate creatinine appearance. A significant difference existed between the slopes of the regression lines in the two groups of patients ( p < 0.001). A weekly Kturea of 70 L was associated with a urine creatinine appearance of 11.0 mmol/day and a dialysate creatinine appearance of 8.4 mmol/day. Nutritional status measured with creatinine appearance and Subjective Global Assessment was better in the predialysis population, despite much lower values for Kt/Vurea in these patients. Conclusions The relationship between Kt/Vurea and nPNA in anuric PD patients is different from that in a predialysis population. It follows from our results that, when Kt/Vurea is above 1.3/week, a given level of Kt/Vurea is associated with a higher nPNA in predialysis than in anuric PD patients. This challenges the concept of equivalency between renal and peritoneal Kt/Vurea with respect to control of uremic morbidity.

Careful Patient Selection and Dialysis Prescription are Required for Effective Nightl Y Intermittent Peritoneal Dialysis

1994 ◽  
Vol 14 (2) ◽  
pp. 155-158 ◽  
Author(s):  
Jean L. Holley ◽  
Beth Piraino
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Serum Creatinine ◽  
Clinical Status ◽  
Residual Renal Function ◽  
Peritoneal Equilibration Test ◽  
Dialysis Adequacy ◽  
Continuous Cycling ◽  
Continuous Peritoneal Dialysis ◽  
Dialysis Time

Objective To evaluate the adequacy of dialysis in patients on nighttime intermittent peritoneal dialysis (NIPD). Design Retrospective review of prospectively collected data. Patients Seven patients on NIPD. Measurements The fast peritoneal equilibration test (PET) was used to determine peritoneal membrane permeability for small solutes. Adequacy of dialysis measured by 24hour collections of dialysate and urine for weekly KT/V and creatinine clearance in liters/week/1.73 m2 was assessed in patients with (n=3) and without (n=4) residual renal function and evaluated in concert with the patient's clinical status. Outcome for each patient was also noted. Results Five of the patients had a high-average dialysate/serum creatinine by PET (>0.66). Despite a weekly KT/V of 1.7 or more, four of the seven patients on NIPD were uremic and either transferred to hemodialysis or continuous cycling peritoneal dialysis (CCPD). A fifth patient had a KT/V of 1.4 and was also uremic on NIPD. The patient who was clinically well and continued on NIPD had significant residual renal function. Conclusions NIPD should be restricted to patients with high-average dialysate/serum creatinine as determined by PET and residual renal function or those with high dialysate/serum creatinine. Extended dialysis time and large volumes of dialysate are required for successful NIPD in patients without residual renal function. Accepted parameters of dialysis adequacy used for patients on continuous peritoneal dialysis are not appropriate for intermittent forms of peritoneal dialysis.

scholarly journals Comparative study on the efficacy of peritoneal dialysis and hemodialysis in patients with end-stage diabetic nephropathy

2020 ◽  
Vol 36 (7) ◽  
Author(s):  
Xiao-dong Xu ◽  
Xue Han ◽  
Yi Yang ◽  
Xu Li
Keyword(s):  
Blood Pressure ◽  
Renal Function ◽  
Diabetic Nephropathy ◽  
Peritoneal Dialysis ◽  
Comparative Study ◽  
Systolic Pressure ◽  
Residual Renal Function ◽  
Creative Commons ◽  
Significant Difference ◽  
End Stage

Objective: Diabetic nephropathy is a serious threat to human health, and its incidence is on the rise. End-stage diabetic nephropathy (ESDN) requires extra investigation due to its complexity and severity, as well as serious concurrent diseases. Our objective was to compare the efficacy of hemodialysis (HD) and peritoneal dialysis (PD) in the treatment of ESDN. Methods: Clinical data of 84 patients with ESDN admitted to our hospital from June 2016 to June 2018 were retrospectively analyzed. The patients were divided into an HD group that received hemodialysis and a PD group that received peritoneal dialysis. Their general conditions, biochemical indicators, residual renal function and incidence of complications were recorded and compared between the two groups. Results: (1) No significant difference in diastolic blood pressure, systolic blood pressure, body weight, or urine output was detected between the two groups at the beginning of dialysis (P>0.05). (2) Compared to the PD group, the HD group had significantly lower total cholesterol (TC) and triglyceride (TG) (P<0.05), and significantly higher total protein (TP) and albumin (ALB) after treatment (P<0.05). (3) The two groups also showed significant difference in residual renal function after treatment (P<0.05). (4) The HD group had significantly higher systolic pressure than the PD group after treatment (P<0.05). And more cases of infection were observed in the PD group than the HD group (P<0.05). Conclusion: Both HD and PD are used for treatment of ESDN, and can achieve similar calcium and phosphorus control. Compared to HD, PD has less adverse effect on hemodynamics and better preserves residual renal function, but is more likely to cause malnutrition and disorders of lipid metabolism. Therefore, choice of dialysis method should be based on specific conditions of each patient. doi: https://doi.org/10.12669/pjms.36.7.2901 How to cite this:Xu XD, Han X, Yang Y, Li X. Comparative study on the efficacy of peritoneal dialysis and hemodialysis in patients with end-stage diabetic nephropathy. Pak J Med Sci. 2020;36(7):---------. doi: https://doi.org/10.12669/pjms.36.7.2901 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Impact of hydrating status on residual renal function in hemodialysis patients (first report)

2019 ◽  
pp. 40-46
Author(s):  
L. Surzhko ◽  
V. Lubashev ◽  
I. Poperechnyj
Keyword(s):  
Renal Function ◽  
Urine Volume ◽  
Residual Renal Function ◽  
Hemodialysis Patients ◽  
Hydration Status ◽  
Significant Difference ◽  
Daily Urine ◽  
The Relationship ◽  
Reliable Correlation ◽  
Influence Of Hydration

 Residual kidney function (RKF) is a powerful indicator of residual renal functional capacity that eliminates uremic toxins and fluid in hemodialysis patients. The purpose of our study was to investigate the influence of hydrating status on residual renal function in patients with CKD 5HD. Methods. A prospective observational study included 60 hemodialysis patients with CKD VD. All patients were examined - taken general and biochemical blood tests, determined the level of urea and creatinine in the daily urine. RKF was evaluated by urine volume, residual KT / V and KRU. Water balance was measured and evaluated using BCM-monitor. Results.During the analysis of BCM data, hyperhydration (OH / ECW above 15%) was revealed in 15 among all patients included in the study, which amounted to 25%. A statistically significant difference between patients who were hyperhydrated and normohydrated was found in relative (OH / ECW) and absolute hydration (OH), ECW, and ultrafiltration rates. Thus, in the group of hyperhydrated patients, the average relative hydration rate was 14.3% lower compared to normohydrated patients (p < 0.001) and absolute hydration by 2.6 l (p < 0.001). In further analysis, no significant difference between two groups was found in the indicators characterizing the RKF, namely, between the level of urine output, KRU, KT / Vren. The level of ultrafiltration in the group with normal hydration is 900 ml lower than that with hyperhydration (p < 0.005). In study the influence of indicators of hydration status such as OH, OH / ECW, TBW, ECW, ICW on RKF indices no reliable correlation of the above mentioned values ​​with diuresis, KRU, KT / Vren (p > 0.05) was found. A positive correlation was found between KRU, diuresis and KT / Vren, indicating that with increasing diuresis the KRU value and KT / Vren increase (p < 0.001). The same relationship was found between diuresis and KT / Vren, p < 0.001. An analysis of the relationship between absolute and relative hydration with dialysis efficacy (eKT / V) revealed that dialysis efficacy decreases with increase of hydratation in CKD 5HD patients (p < 0.05). Conclusions. The results obtained in our study indicate that the indicators of hydration status at baseline do not allow to find out an influence of them on the baseline level of RKF (diuresis, KRU and KT / Vren) in patients with CKD 5HD. Issues of the influence of hydration status on changes in RKF during the observation will be addressed in the following reports.

Elimination of Iomeprol in Patients Undergoing Continuous Ambulatory Peritoneal Dialysis

1999 ◽  
Vol 19 (4) ◽  
pp. 380-385 ◽  
Author(s):  
Masako Iwamoto ◽  
Kinya Hiroshige ◽  
Takeshi Suda ◽  
Takayuki Ohta ◽  
Akira Ohtani ◽  
...  
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Continuous Ambulatory Peritoneal Dialysis ◽  
Elimination Rate ◽  
Iodine Concentration ◽  
Residual Renal Function ◽  
University Hospitals ◽  
Before And After ◽  
Peritoneal Permeability ◽  
The Mean

Objective To examine the elimination of iomeprol, its safety in clinical use, and its peritoneal permeability in continuous ambulatory peritoneal dialysis (CAPD) patients with variable degrees of residual renal function (RRF). Design A nonrandomized comparison study. Setting Hospitalized patients in CAPD unit of Chikuho and University Hospitals. Participants Fourteen patients treated by CAPD and 6 by hemodialysis (HD). Interventions Total dialysate, blood, and 24-hour urine collections were obtained for 4 consecutive days after the administration of iomeprol. A peritoneal equilibration test was performed just before and after the administration of iomeprol. Measurements Iomeprol (iodine) concentration was measured. Residual renal function was estimated as the mean of renal creatinine and urea clearances. Dialysate-to-plasma ratios (D/P) of creatinine and iomeprol were also determined. Results In all CAPD patients, plasma iomeprol clearance was markedly slow, with a biological half-life ( T1/2) of over 32 hours. However, no patients suffered from any adverse effects, and over 80% of plasma iomeprol was eliminated during the 4-hour HD. The plasma iomeprol elimination rate was significantly higher from 4 hours after the iomeprol administration in CAPD patients with RRF [mean estimated creatinine clearance (CCr) 3.8 mL/min, n = 7] compared to the remaining patients (mean estimated CCr 0.6 mL/min, n = 7); however, T1/2 in patients with RRF was over 24 hours. D/P creatinine was significantly correlated with D/P iomeprol, and peritoneal iomeprol permeability may depend on an individual's peritoneal solute transport properties. Conclusions A prolonged elimination rate of iomeprol was documented in our CAPD patients both with and without RRF. A HD procedure or intensive peritoneal dialysis just after the use of iomeprol may be advisable to promptly remove circulating iomeprol.

scholarly journals Association of Urinary Dickkopf-3 with Residual Renal Function Decline in Patients Undergoing Peritoneal Dialysis

Medicina ◽  
2021 ◽  
Vol 57 (6) ◽  
pp. 631
Author(s):  
Kenta Torigoe ◽  
Kumiko Muta ◽  
Kiyokazu Tsuji ◽  
Ayuko Yamashita ◽  
Miki Torigoe ◽  
...  
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Clinical Characteristics ◽  
Multivariate Analyses ◽  
Residual Renal Function ◽  
Annual Rate ◽  
Renal Survival ◽  
Renal Function Decline ◽  
Urinary Levels ◽  
The Relationship

Background and Objectives: Urinary levels of dickkopf-3 (DKK-3) are associated with poor renal survival in patients with non-dialytic chronic kidney disease. However, it remains unknown whether urinary DKK-3 levels can predict residual renal function (RRF) decline in patients undergoing peritoneal dialysis (PD). Therefore, we investigated the correlation between urinary levels of DKK-3 and the subsequent rate of RRF decline in PD patients. Materials and Methods: This study included 36 PD patients who underwent multiple peritoneal equivalent tests during 2011–2021. The relationship between baseline clinical characteristics and the subsequent annual rate of Kt/V decline was investigated. Results: The annual rate of renal Kt/V decline was 0.29 (range: 0.05–0.48), which correlated with renal Kt/V (r = 0.55, p = 0.0005) and 24 h urinary DKK-3 excretion (r = 0.61, p < 0.0001). Similarly, 24 h urinary DKK-3 excretion (β = 0.44, p = 0.0015) and renal Kt/V (β = 0.38, p = 0.0059) were independently associated with the annual rate of renal Kt/V decline in multivariate analyses. Conclusions: Urinary DKK-3 assessment may help identify PD patients at a high risk of RRF decline.

The relationship between the soluble Klotho protein and the residual renal function among peritoneal dialysis patients

2012 ◽  
Vol 16 (3) ◽  
pp. 442-447 ◽  
Author(s):  
Tetsu Akimoto ◽  
Kazuhiro Shiizaki ◽  
Taro Sugase ◽  
Yuko Watanabe ◽  
Hiromichi Yoshizawa ◽  
...  
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Residual Renal Function ◽  
Dialysis Patients ◽  
Klotho Protein ◽  
The Relationship

Treatment Targets for Diabetic Patients on Peritoneal Dialysis: Any Evidence?

2007 ◽  
Vol 27 (2_suppl) ◽  
pp. 176-179 ◽  
Author(s):  
Chiu-Ching Huang
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Glycemic Control ◽  
Clinical Outcome ◽  
Small Molecules ◽  
Residual Renal Function ◽  
Diabetic Patients ◽  
Peritoneal Membrane ◽  
Comorbid Conditions ◽  
Dialysis Solutions

Diabetic patients are often affected by comorbid conditions that influence clinical outcome. Taking care of diabetic peritoneal dialysis (PD) patients is a challenge for nephrologists, not only because these patients have more complications and comorbidities, but also because of their difficulties in maintaining glycemic control with the use of current glucose-containing dialysis solutions. In addition, the increased transport of small molecules and proteins by the peritoneal membrane in diabetic patients adds the further problems of ultrafiltration deficit and malnutrition. The present article reviews pertinent evidence toward establishing the best strategy for the care of diabetic PD patients. With better glycemic control, improved nutrition, improved fluid balance, and optimal preservation of residual renal function, there is hope for improving the survival of diabetic PD patients.

The Impact of Peritoneal Permeability and Residual Renal Function on Pd Prescription

1996 ◽  
Vol 16 (1_suppl) ◽  
pp. 147-152 ◽  
Author(s):  
John Harty ◽  
Ram Gokal
Keyword(s):  
Renal Function ◽  
Peritoneal Dialysis ◽  
Creatinine Clearance ◽  
Model Simulation ◽  
High Volume ◽  
Residual Renal Function ◽  
Peritoneal Transport ◽  
Target Values ◽  
Peritoneal Permeability ◽  
The Impact

Our objective was to evaluate the impact of peritoneal transport characteristics and residual renal function on peritoneal clearance and to determine the dialysis volume required to achieve targets for KT/V and weekly creatinine clearance (WCC) in patients with differing weights, renal function, and transport status. Retrospective analysis and mathematical model simulation of urea and creatinine clearance were used. This review demonstrates the important contribution of both residual renal function and peritoneal transport in attaining target values for KT/V and WCC. The limitations of a standard 4 x 2 L dialysis prescription are highlighted in anuric patients and those with low peritoneal transport. In addition, the limitations of short dwell, rapid exchange dialysis modalities are emphasized, especially in patients with low and low average peritoneal transport where daily clearance is demonstrated to be considerably less than conventional continuous ambulatory peritoneal dialysis (CAPD). Attainment of proposed targets for KT/V (1.7) and WCC (50 L) is greatly dependent on residual renal function. In CAPD, peritoneal transport characteristics determine urea clearance through an effect on ultrafiltrate. Thus low transporters of identical weight will have greater values for peritoneal dialysis KT/V. Creatinine clearance is considerably influenced by transport status. The majority of low and low average groups will need some degree of renal function to achieve currently proposed targets. In these patients, conversion to high volume, short dwell modalities will further compromise small solute clearance unless daytime long dwells or tidal dialysis is instigated.

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