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Canziani MEF, Strogoff-de-Matos JP, Guedes M, Barra ABL, Canhada S, Carvalho L, Gemente D, Poli-de-Figueiredo CE, Pecoits-Filho R. High volume online hemodiafiltration: a global perspective and the Brazilian experience. J Bras Nefrol 2024; 46:e20230104. [PMID: 38134298 PMCID: PMC11210529 DOI: 10.1590/2175-8239-jbn-2023-0104en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/12/2023] [Indexed: 12/24/2023] Open
Abstract
Online hemodiafiltration (HDF) is a rapidly growing dialysis modality worldwide. In Brazil, the number of patients with private health insurance undergoing HDF has exceeded the number of patients on peritoneal dialysis. The achievement of a high convection volume was associated with better clinical imprand patient - reported outcomes confirming the benefits of HDF. The HDFit trial provided relevant practical information on the implementation of online HDF in dialysis centers in Brazil. This article aims to disseminate technical information to improve the quality and safety of this new dialysis modality.
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Affiliation(s)
| | | | - Murilo Guedes
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
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Lima JD, Guedes M, Rodrigues SD, Flórido ACS, Moreno-Amaral AN, Barra AB, Canziani ME, Cuvello-Neto A, Poli-de-Figueiredo CE, Pecoits-Filho R, Nakao LS. High-volume hemodiafiltration decreases the pre-dialysis concentrations of indoxyl sulfate and p-cresyl sulfate compared to hemodialysis: a post-hoc analysis from the HDFit randomized controlled trial. J Nephrol 2022; 35:1449-1456. [PMID: 35239175 DOI: 10.1007/s40620-022-01283-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/08/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Although high-volume online hemodiafiltration has been associated with higher clearance and lower pre-dialysis concentration of middle molecular weight toxins compared to hemodialysis, its effect on protein-bound uremic toxins has shown inconclusive results. In this study, we investigated whether hemodiafiltration impacts pre-dialysis plasma levels of the toxins indoxyl sulfate, p-cresyl sulfate, and indole-3-acetic acid compared to high-flux hemodialysis. METHODS This is a post-hoc analysis of the multicenter, randomized controlled trial HDFit (ClinicalTrials.gov: NCT02787161). Uremic toxins were determined by high performance liquid chromatography at baseline, 3, and 6 months. Mean differences in monthly changes of pre-dialysis uremic toxin concentrations between hemodiafiltration and high-flux hemodialysis were analyzed using linear mixed-effect models. RESULTS One hundred ninety-three patients (mean age 53 years old, 71% males) were analyzed. There were no differences between groups regarding clinical and biochemical characteristics at baseline or duration of dialysis session and blood flows throughout the follow-up. Mean differences in rates of change (μM/month, [confidence interval CI]) in high-flux hemodialysis vs. hemodiafiltration were 2.4 [0.3 to 4.56], 3.94 [- 1.54 to 9.41] and 0.06 [- 0.6 to 0.5] for indoxyl sulfate, p-cresyl sulfate and indole-3-acetic acid, respectively. In the exploratory analysis, these differences in high-flux hemodialysis vs. hemodiafiltration subgroup with convective volume > 27.5 L were 2.86 [0.43 to 5.28], 7.43 [0.7 to 14.16] and - 0.19 [- 0.88 to 0.50]. CONCLUSION These exploratory findings suggest that hemodiafiltration is more effective in reducing indoxyl sulfate as compared to standard high-flux hemodialysis, and also that this effect was extended to p-cresyl sulfate in patients achieving higher convective volumes.
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Affiliation(s)
- Jordana D Lima
- Department of Basic Pathology, Universidade Federal do Paraná, Curitiba, Brazil
| | - Murilo Guedes
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Silvia D Rodrigues
- Department of Basic Pathology, Universidade Federal do Paraná, Curitiba, Brazil
| | - Ana Clara S Flórido
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | | | | | | | | | | | - Roberto Pecoits-Filho
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil.,Arbor Research Collaborative for Health, Ann Arbor, USA
| | - Lia S Nakao
- Department of Basic Pathology, Universidade Federal do Paraná, Curitiba, Brazil.
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Pecoits-Filho R, Larkin J, Poli-de-Figueiredo CE, Cuvello-Neto AL, Barra ABL, Gonçalves PB, Sheth S, Guedes M, Han M, Calice-Silva V, de Castro MCM, Kotanko P, de Moraes TP, Raimann JG, Canziani MEF. Effect of hemodiafiltration on measured physical activity: primary results of the HDFIT randomized controlled trial. Nephrol Dial Transplant 2021; 36:1057-1070. [PMID: 33160281 PMCID: PMC8160948 DOI: 10.1093/ndt/gfaa173] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/11/2020] [Indexed: 12/13/2022] Open
Abstract
Background Dialysis patients are typically inactive and their physical activity (PA) decreases over time. Uremic toxicity has been suggested as a potential causal factor of low PA in dialysis patients. Post-dilution high-volume online hemodiafiltration (HDF) provides greater higher molecular weight removal and studies suggest better clinical/patient-reported outcomes compared with hemodialysis (HD). Methods HDFIT was a randomized controlled trial at 13 clinics in Brazil that aimed to investigate the effects of HDF on measured PA (step counts) as a primary outcome. Stable HD patients (vintage 3–24 months) were randomized to receive HDF or high-flux HD. Treatment effect of HDF on the primary outcome from baseline to 3 and 6 months was estimated using a linear mixed-effects model. Results We randomized 195 patients (HDF 97; HD 98) between August 2016 and October 2017. Despite the achievement of a high convective volume in the majority of sessions and a positive impact on solute removal, the treatment effect HDF on the primary outcome was +538 [95% confidence interval (CI) −330 to 1407] steps/24 h after dialysis compared with HD, and was not statistically significant. Despite a lack of statistical significance, the observed size of the treatment effect was modest and driven by steps taken between 1.5 and 24.0 h after dialysis, in particular between 20 and 24 h (+197 steps; 95% CI −95 to 488). Conclusions HDF did not have a statistically significant treatment effect on PA 24 h following dialysis, albeit effect sizes may be clinically meaningful and deserve further investigation.
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Affiliation(s)
| | - John Larkin
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil.,Fresenius Medical Care, Global Medical Office, Waltham, MA, USA
| | | | | | | | | | | | - Murilo Guedes
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - Maggie Han
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil.,Renal Research Institute, New York, NY, USA
| | | | | | - Peter Kotanko
- Renal Research Institute, New York, NY, USA.,Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Guedes M, Dambiski AC, Canhada S, Barra ABL, Poli-de-Figueiredo CE, Cuvello Neto AL, Canziani MEF, Strogoff-de-Matos JP, Raimann JG, Larkin J, Canaud B, Pecoits-Filho R. Achieving high convective volume in hemodiafiltration: Lessons learned after successful implementation in the HDFit trial. Hemodial Int 2020; 25:50-59. [PMID: 33058473 DOI: 10.1111/hdi.12891] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/19/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVES High-volume online hemodiafiltration (OL-HDF) associates with improved outcomes compared to hemodialysis (HD), provided adequate dosing is achieved as estimated from convective volume (CV). Achievement of high CV and its impact on biochemical indicators following a standardized protocol converting HD patients to OL-HDF has not been systematically reported. We assessed the success of implementation of OL-HDF in clinics naïve to the modality. DESIGN, SETTING, PARTICIPANTS, AND MEASUREMENTS We analyzed the results of the implementation of postdilution OL-HDF in patients randomized to the HDF arm of a clinical trial (impact of hemoDiaFIlTration on physical activity and self-reported outcomes: a randomized controlled trial (HDFit) trial [ClinicalTrials.gov:NCT02787161]). The day before randomization of the first patient to OL-HDF at each clinic staff started a 3-day in-person training module on operation of Fresenius 5008 CorDiax machine in HDF mode. Patients were converted from high-flux HD to OL-HDF under oversight of trainers. OL-HDF was performed over a 6-months follow-up with a CV target of 22 L/treatment. We characterized median achieved CV >22 L/treatment record and analyzed the impact of HDF on biochemical variables. RESULTS Ninety-seven patients (mean age 53 ± 16 years, 29% with diabetes, and 11% had a catheter) from 13 clinics randomized to the OL-HDF arm of the trial were converted from HD to HDF. Median CV > 22 L/treatment was achieved in 99% (94/95) of OL-HDF patients throughout follow-up. Monthly mean CV ranged from 27.1 L to 27.5 L. OL-HDF provided an increased single pool Kt/V at 3-months (0.2 [95% CI: 0.1-0.3]) and 6-months (0.2 [95% CI: 0.1-0.4]) compared to baseline, and reduced phosphate at 3-months (-0.4 mg/dL [95% CI: -0.8 to -0.12]) of follow-up. CONCLUSIONS High-volume online hemodiafiltration was successfully implemented with 99% of patients achieving protocol defined CV target. Monthly mean CV was consistently >22 L/treatment during follow-up. Kt/V increased, and phosphate decreased with OL-HDF. Findings resulting from a short training period in several dialysis facilities appear to suggest HDF is an easily implementable technique.
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Affiliation(s)
- Murilo Guedes
- School of Medicine, Pontificia Universidade Catolica do Parana, Curitiba, Brazil
| | | | | | | | | | | | | | | | | | - John Larkin
- School of Medicine, Pontificia Universidade Catolica do Parana, Curitiba, Brazil.,Fresenius Medical Care, Global Medical Office, Bad Homburg, Germany
| | - Bernard Canaud
- Fresenius Medical Care, Global Medical Office, Bad Homburg, Germany.,Montpellier University, Montpellier, France
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Leme J, Guedes M, Larkin J, Han M, Barra ABL, Canziani MEF, Cuvello Neto AL, Poli-de-Figueiredo CE, de Moraes TP, Pecoits-Filho R. Patient perception of vitality and measured physical activity in patients receiving haemodialysis. Nephrology (Carlton) 2020; 25:865-871. [PMID: 32706161 DOI: 10.1111/nep.13758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 06/30/2020] [Accepted: 07/06/2020] [Indexed: 11/30/2022]
Abstract
AIM Fatigue in haemodialysis (HD) patients can be captured in quality of life questionnaires and by the dialysis recovery time (DRT) question. The associations between fatigue and measured physical activity has not been explored until the present. We tested our hypothesis that the patient perception of chronic and post dialysis fatigue would be associated with lower physical activity. METHODS This study was a cross sectional evaluation of baseline data from HD patients recruited in the HDFIT trial. Vitality scores from the Kidney Disease Quality of Life (KDQOL-36) and the dialysis recovery time (DRT) question were used as indicators of chronic and post dialysis fatigue, respectively. Granular physical activity was measured by accelerometers as part of the study protocol. RESULTS Among 176 patients, Vitality score was 63 ± 21 and the DRT was ≤30 minutes in 57% of patients. The mean number of steps was 5288 ± 3540 in 24 hours after HD and 953 ± 617 in the 2-hour post-HD period. The multivariable analysis confirmed Vitality scores were associated with physical activity in the 24-hour post-HD period. In contrast, DRT was not associated with physical activity captured by the accelerometer in the period immediately (2 hours) after the HD session. CONCLUSION Chronic fatigue was negatively associated with step counts, while patient perception of post-dialysis fatigue was not associated with physical activity. These patterns indicate limitations in interpretation of DRT. Since physical activity is an important component of a healthy life, our results may partially explain the associations between fatigue and poor outcomes in HD patients.
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Affiliation(s)
- Juliana Leme
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Murilo Guedes
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - John Larkin
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil.,Fresenius Medical Care, Global Medical Office, Waltham, Massachusetts, USA
| | - Maggie Han
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil.,Renal Research Institute, New York, New York, USA
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Larkin JW, Han M, Han H, Guedes MH, Gonçalves PB, Poli-de-Figueiredo CE, Cuvello-Neto AL, Barra ABL, de Moraes TP, Usvyat LA, Kotanko P, Canziani MEF, Raimann JG, Pecoits-Filho R. Impact of hemodialysis and post-dialysis period on granular activity levels. BMC Nephrol 2020; 21:197. [PMID: 32450793 PMCID: PMC7249440 DOI: 10.1186/s12882-020-01853-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 05/12/2020] [Indexed: 11/26/2022] Open
Abstract
Background Physical activity (PA) is typically lower on hemodialysis (HD) days. Albeit intradialytic inactivity is expected, it is unknown whether recovery after HD contributes to low PA. We investigated the impact of HD and post-HD period on granular PA relative to HD timing. Methods We used baseline data from the HDFIT trial conducted from August 2016 to October 2017. Accelerometry measured PA over 1 week in patients who received thrice-weekly high-flux HD (vintage 3 to 24 months), were clinically stable, and had no ambulatory limitations. PA was assessed on HD days (0 to ≤24 h after start HD), first non-HD days (> 24 to ≤48 h after start HD) and second non-HD day (> 48 to ≤72 h after start HD). PA was recorded in blocks/slices: 4 h during HD, 0 to ≤2 h post-HD (30 min slices), and > 2 to ≤20 h post-HD (4.5 h slices). Blocks/slices of PA were captured at concurrent/parallel times on first/second non-HD days compared to HD days. Results Among 195 patients (mean age 53 ± 15 years, 71% male), step counts per 24-h were 3919 ± 2899 on HD days, 5308 ± 3131 on first non-HD days (p < 0.001), and 4926 ± 3413 on second non-HD days (p = 0.032). During concurrent/parallel times to HD on first and second non-HD days, patients took 1308 and 1128 more steps (both p < 0.001). Patients took 276 more steps and had highest rates of steps/hour 2-h post-HD versus same times on first non-HD days (all p < 0.05). Consistent findings were observed on second non-HD days. Conclusions PA was higher within 2-h of HD versus same times on non-HD days. Lower PA on HD days was attributable to intradialytic inactivity. The established PA profiles are of importance to the design and development of exercise programs that aim to increase activity during and between HD treatments. Trial registration HDFIT was prospectively registered 20 April 2016 on ClinicalTrials.gov (NCT02787161)
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Affiliation(s)
- John W Larkin
- School of Medicine, Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil. .,Global Medical Office, Fresenius Medical Care, Waltham, MA, USA.
| | - Maggie Han
- School of Medicine, Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil.,Research Division, Renal Research Institute, New York, NY, USA
| | - Hao Han
- Global Medical Office, Fresenius Medical Care, Waltham, MA, USA
| | - Murilo H Guedes
- School of Medicine, Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | | | | | | | | | - Thyago Proença de Moraes
- School of Medicine, Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | - Len A Usvyat
- Global Medical Office, Fresenius Medical Care, Waltham, MA, USA
| | - Peter Kotanko
- Research Division, Renal Research Institute, New York, NY, USA.,Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | - Roberto Pecoits-Filho
- School of Medicine, Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
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Morais JG, Pecoits-Filho R, Canziani MEF, Poli-de-Figueiredo CE, Cuvello Neto AL, Barra AB, Calice-Silva V, Raimann JG, Nerbass FB. Fluid overload is associated with use of a higher number of antihypertensive drugs in hemodialysis patients. Hemodial Int 2020; 24:397-405. [PMID: 32157798 DOI: 10.1111/hdi.12829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Hypertension is multifactorial, highly prevalent in the hemodialysis (HD) population and its adequate control requires, in addition to adequate volume management, often the use of multiple antihypertensive drugs. We aimed to describe the use of antihypertensive agents in a group of HD patients and to evaluate the factors associated with the use of multiple classes (≥3) of antihypertensives. METHODS We analyzed the baseline data from the HDFit study. Clinically stable patients with HD vintage between 3 and 24 months without any severe mobility limitation were recruited from sites throughout southern Brazil. Fluid status was measured pre-dialysis with the Body Composition Monitor (BCM; Fresenius, Germany). Fluid overload (FO) was considered when the overhydration index (OH) was greater than 7% of extracellular water (OH/ECW > 7%) and overweight was defined as a body mass index (BMI) greater than 25 kg/m2 . Prescriptions of antihypertensive drugs were obtained from participants' reports and medical records. Logistic regression was employed to determine factors associated with excessive use of antihypertensive medication (≥3 classes). FINDINGS Of 195 studied patients, 171 with complete data were included (70% male, 53 ± 15 years old, 57% of them with FO). Pre-dialysis systolic blood pressure (SBP) was 150 ± 24 mmHg and patients used a median of 2 (1-3) antihypertensive drugs. Vasodilators (20%) were of lowest prevalence, use of other classes varied from 40% to 53%. Sixty-two (36%) subjects used ≥3 classes and presented a higher prevalence of diabetes and FO, lower prevalence of overweight, and higher SBP. In a logistic regression model age, BMI <25 kg/m2 , and OH/ECW > 7% were associated with excessive drug use. DISCUSSION More than one-third of participants used ≥3 classes of antihypertensive drugs, and it was associated with older age, BMI <25 kg/m2 and FO. Strategies that better manage FO may aid better blood pressure control and avoid the use of multiple antihypertensive medications.
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Affiliation(s)
- Jyana G Morais
- Pontifícia Universidade Católica do Paraná, Curitiba, Brazil.,Fundação PróRim, Joinville, Brazil
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