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Early survival on maintenance dialysis therapy in South Africa: evaluation of a pre-dialysis education programme

Abstract

Background

Mortality in the first year of maintenance dialysis is higher than in subsequent years and, within this first year, the risk of death is highest in the first 90 days. Some studies have shown that pre-dialysis education reduces early mortality. Limited data have been published from South Africa regarding early mortality after commencement of maintenance dialysis treatment and the effect of pre-dialysis intervention programmes on these outcomes. The aim of this study was to assess the impact of a pre-dialysis intervention programme on 90- and 365-day outcomes and to determine incident mortality in a population of chronic haemo- and peritoneal dialysis patients in South Africa.

Methods

This study used a retrospective cohort of 269 patients who received a pre-dialysis intervention [Healthy Start (HS)] and a matched group of 269 patients who did not receive the intervention. Both groups subsequently commenced maintenance haemo-/peritoneal dialysis with National Renal Care (NRC). A between-group comparative analysis was conducted to determine whether there were any differences in morbidity and mortality at 90 and 365 days of chronic dialysis treatment. Survival curves for the first 365 days of treatment were calculated using the Kaplan–Meier estimation for the entire population and by age group, gender, race, diabetes, dialysis modality and presence of a central venous catheter (CVC) at start of dialysis treatment.

Results

There were no significant differences between the HS and non-HS groups at 90 and 365 days when comparing mortality, cause of death, hospital admission rates and length of stay. Data were then pooled and a Kaplan–Meier analysis showed 90- and 365-day survival of 96.7 and 85.6 %, respectively. The peak mortality occurred at 150 days of dialysis treatment, but this was not significant. Older age and the presence of a CVC were associated with an increased risk of death in the first year of treatment.

Conclusion

The HS Programme made no difference to mortality in the first year of chronic dialysis. Early survival for both HS and non-HS groups was excellent when compared to international data. Increasing age and the presence of a CVC at the start of chronic dialysis were the two factors that impacted significantly on 1-year survival.

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Acknowledgments

The patients who comprised the study sample; the Healthy Start and chronic dialysis staff of National Renal Care.

Conflict of interest

Karlien van Jaarsveld: Employed by National Renal Care (NRC) at the time of completing this study; financial support from NRC to conduct the study.

June Fabian: Grant from NRC for this study.

Heather Maher: Grant from NRC for this study.

Petra Gaylard: No conflict of interest.

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Correspondence to June Fabian.

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Fabian, J., Van Jaarsveld, K., Maher, H.A. et al. Early survival on maintenance dialysis therapy in South Africa: evaluation of a pre-dialysis education programme. Clin Exp Nephrol 20, 118–125 (2016). https://doi.org/10.1007/s10157-015-1125-z

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  • DOI: https://doi.org/10.1007/s10157-015-1125-z

Keywords

  • Incident mortality
  • Chronic dialysis in South Africa
  • Pre-dialysis programme
  • Survival
  • Central venous catheter