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Should we abandon GFR in the decision to initiate chronic dialysis?
1Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS foundation Trust, Great Ormond Street, London, WC1N 3JH, UK. evgenia.preka@gmail.com.
Insights
Starting chronic dialysis earlier in stage 5 chronic kidney disease (CKD) offers no survival benefit. Evidence from adult and pediatric studies suggests delaying dialysis initiation is appropriate for most patients with advanced CKD.
Area of Science:
- Nephrology
- Clinical Trials
- Renal Medicine
Background:
- The optimal timing for initiating chronic dialysis in patients with stage 5 chronic kidney disease (CKD) remains a subject of debate.
- Recent evidence from a major randomized controlled trial in adults and analyses of large pediatric registries offers new insights.
Purpose of the Study:
- To review the evidence regarding the timing of dialysis initiation in advanced CKD.
- To discuss the limitations of current studies and factors influencing the decision-making process for early versus late dialysis start.
Main Methods:
- Review of the IDEAL study (a randomized trial in adults).
- Analysis of data from the U.S. Renal Data System (USRDS) and European Society of Paediatric Nephrology (ESPN) Registry.
- Discussion of study limitations and assessment factors.
Main Results:
- Consensus across four major studies indicates no survival advantage from initiating dialysis early in stage 5 CKD.
- The findings apply to both adult and pediatric populations.
Conclusions:
- The current evidence suggests that initiating dialysis later in the course of stage 5 CKD is not associated with harm and may be preferable.
- Further discussion is needed regarding the assessment of glomerular filtration rate (GFR) at later CKD stages and the specific factors that determine the benefits of early versus late dialysis initiation.
Abstract:
The best time to start chronic dialysis during the course of CKD stage 5 is controversial. The first randomised control trial of dialysis initiation either in early or late CKD stage 5 in adults (IDEAL study), and 3 studies from the two largest paediatric registries, the U.S. Renal Data System (USRDS) and the European Society of Paediatric Nephrology (ESPN) Registry, have now provided us with evidence to guide us in this important decision-making process. The message 'no benefit from early start of dialysis' is the conclusion from all four studies. However, what are the limitations of these studies? Can GFR be assessed at CKD stages 4 and 5? What are the factors used to assess the benefit of early or late start? These issues are discussed in this review.
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