Elsevier

Seminars in Nephrology

Volume 31, Issue 2, March 2011, Pages 152-158
Seminars in Nephrology

An Update on the Comparisons of Mortality Outcomes of Hemodialysis and Peritoneal Dialysis Patients

https://doi.org/10.1016/j.semnephrol.2011.01.004Get rights and content

Summary

The number of dialysis patients continues to grow. In many parts of the world, peritoneal dialysis (PD) is a less expensive form of treatment. However, it has been questioned whether patients treated with PD can have as good a long-term outcome as that achieved with hemodialysis (HD). This skepticism has fueled ongoing comparisons of outcomes of patients treated with in-center HD and PD using data from national registries or prospective cohort studies. There are major challenges in comparing outcomes with two therapies when the treatment assignment is nonrandom. Furthermore, many of the intermodality comparisons include patients who started dialysis therapy in the 1990s. In many parts of the world, improvements in PD outcome have outpaced those seen with in-center HD. It is not surprising, then, that virtually all the recent observational studies from different parts of the world consistently show that long-term survival of HD and PD patients is remarkably similar. These studies support the case for a greater use of PD for the treatment of end-stage renal disease. This, in turn, could allow more patients to be treated for any given budgetary allocation to long-term dialysis.

Section snippets

Intermodality Comparisons Using Observational Studies: Challenges and Pitfalls

The observational studies that have sought to compare the outcomes of PD and HD patients can be grouped into two broad categories: prospective cohort studies and those that use data from national registries of dialysis patients. The major advantage of prospective cohort studies is that they contain detailed information about patient characteristics and hence allow for a more comprehensive adjustment for these differences. However, because such studies are expensive to undertake, the statistical

Contemporary Intermodality Comparisons

Starting from the early 1980s, a large number of studies have compared the survival of patients treated with PD and HD. Over the past 3 decades, the study design has evolved from single-center and multicenter studies in the 1980s and early 1990s, to either prospective cohort studies or those using data from national registries of dialysis patients thereafter. The early studies produced inconsistent results, it was largely through attempts to explain these inconsistencies that have led to our

Conclusions

Contemporary studies suggest that the effect of dialysis modality on patient survival is rather small, if any. It follows then that survival studies should not be used in making decisions about the appropriate dialysis modality for an individual patient. This should, instead, be based on a discussion about patients' expectations about their lifestyle, which in turn can be made only after early and iterative dialysis modality education.26 Studies have suggested that most patients starting

References (28)

  • B.J. Manns et al.

    The impact of education on chronic kidney disease patients' plans to initiate dialysis with self-care dialysis: a randomized trial

    Kidney Int

    (2005)
  • B.G. Jaar et al.

    Comparing the risk for death with peritoneal dialysis and hemodialysis in a national cohort of patients with chronic kidney disease

    Ann Intern Med

    (2005)
  • F. Termorshuizen et al.

    Hemodialysis and peritoneal dialysis: comparison of adjusted mortality rates according to the duration of dialysis: analysis of The Netherlands Cooperative Study on the Adequacy of Dialysis 2

    J Am Soc Nephrol

    (2003)
  • C.C. Huang et al.

    Survival analysis: comparing peritoneal dialysis and hemodialysis in Taiwan

    Perit Dial Int

    (2008)
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      Citation Excerpt :

      Numerous studies have been performed in the past decade that did not show a significant difference in the survival rates between patients undergoing PD or HD as their primary modality of RRT. In fact, some studies even showed a lower mortality rate associated with PD treatment, especially in the first 2 years after starting RRT.6,10,11 In our center, we found a respectable 91% patient survival rate and an 82% technique survival among our patients over the first 24 months started on PD.

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    Supported in part by grant DK077341 from the National Institutes of Health (R.M. and K.K.-Z.), Baxter Health Care (R.M.), and DaVita Inc. (R.M. and K.K.-Z.). Rajnish Mehrotra has received research grants, served as ad hoc consultant, and received honoraria from Baxter Health Care.

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