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Perit Dial Int 27(6): 611-618 2007
© 2007 International Society for Peritoneal Dialysis
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INVITED REVIEWS

THE FATE OF OLDER DIABETIC PATIENTS ON PERITONEAL DIALYSIS: MYTHS AND MYSTERIES AND SUGGESTIONS FOR FURTHER RESEARCH

Steven Van Laecke, Nic Veys, Francis Verbeke, Raymond Vanholder and Wim Van Biesen

Renal Division, Department of Internal Medicine, University Hospital Ghent, Belgium

Correspondence to: W. Van Biesen, Renal Division 0K12IA, University Hospital Ghent, Ghent, Belgium. wim.vanbiesen{at}ugent.be

The outcome of older and especially of female diabetic patients appears to be worse on peritoneal dialysis (PD) than on hemodialysis (HD). This opinion is based mostly on data coming from the USA, whereas data from other regions seem to give a more balanced picture. The questions arise whether indeed outcome is worse in this patient group, and what might be the underlying reasons for this; further research to unravel this phenomenon is warranted. This review proposes several suggestions for further exploration. The observed differences in outcome might be attributable to differences in treatment practices and experience with PD versus HD. As cardiovascular mortality is a major killer in end-stage renal disease patients, differences in fluid homeostasis and how it is achieved are potential explanations. Fluid balance is potentially more difficult to obtain in PD patients, especially as in the past it was spuriously suggested that fluid restriction was less important in PD patients. PD and HD might also have different impacts on factors related to inflammation, insulin resistance, and hormone balance. The adipocytokine network is of special interest in this respect. It is also possible that bias introduced by the way we measure body composition might have a more negative impact on PD than on HD patients. Finally, it still is not fully established that if diabetic patients are treated appropriately, their outcome on PD is worse than that on HD; further observational trials in this respect are needed. All these topics require further clarification and investigation.

KEY WORDS: Hemodialysis; outcome; diabetes; gender; female; volume status; insulin resistance.

Received 1 May 2007; accepted 10 August 2007.






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