Document Detail

Daily ultrafiltration results in improved blood pressure control and more efficient removal of small molecules during hemodialysis.
MedLine Citation:
PMID:  23306592     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Although prior studies have shown that frequent hemodialysis (HD) can lead to improved control of dry weight in end-stage renal disease patients, there are no clinical studies examining whether this can improve blood pressure (BP) control and can also shorten the dialysis time needed to achieve satisfactory removal of small molecules. Several models of wearable dialysis systems are now under various stages of development. These devices present the possibility of hemodialyzing patients to their dry weights. We have built a prototype of a wearable ultrafiltration (UF) device that can provide daily UF. Apart from better fluid control, we hypothesize that separating HD from UF will result in better BP control, and adequate weekly small molecule removal could be achieved with a decreased duration of dialysis. We tested the hypothesis in current HD patients using conventional dialysis equipment.
METHODS: Thirteen patients were selected from a large urban HD center. The experimental period consisted of 4 weeks of daily UF (4 days/week of UF alone and 2 days/week of HD with UF). The duration of the HD sessions was increased by 15-30 min to maintain weekly standard Kt/V >2.0. The patients were then returned to their conventional 3 days/week of HD with UF and studied for 4 weeks. Predialysis BPs, interdialytic weight gains, and Kt/V results of the experimental and return periods were compared with those of the 3-month control period. No changes were made in antihypertensive or other medication during the study.
RESULTS: During the experimental period, mean arterial pressure decreased from 110 to 95 mm Hg (p < 0.001), systolic BP from 158 to 136 mm Hg (p < 0.001), while interdialytic weight gains were reduced from 3.25 to 1.21 liters (p < 0.0001). During the experimental period, weekly standard Kt/V of 2.16 was achieved in 8.24 h/week of HD, as compared to 11.14 h/week.
CONCLUSIONS: Volume control with daily UF results in improved BP control and, by separating the UF function from HD, adequate weekly standard Kt/V >2 can be achieved with twice weekly HD.
James P Jones; Edward F Leonard; Gagangeet Sandhu; Gary Winkel; Nathan W Levin; Stanley Cortell
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2013-01-08
Journal Detail:
Title:  Blood purification     Volume:  34     ISSN:  1421-9735     ISO Abbreviation:  Blood Purif.     Publication Date:  2012  
Date Detail:
Created Date:  2013-03-07     Completed Date:  2013-08-23     Revised Date:  2014-01-16    
Medline Journal Info:
Nlm Unique ID:  8402040     Medline TA:  Blood Purif     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  325-31     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 S. Karger AG, Basel.
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MeSH Terms
Blood Pressure*
Body Fluids / chemistry
Body Weight
Electric Impedance
Hemodiafiltration* / adverse effects
Kidney Failure, Chronic / blood,  physiopathology,  therapy
Quality of Life
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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