Outcomes associated with serum phosphorus level in males with non-dialysis dependent chronic kidney disease

C. P. Kovesdy, J. E. Anderson, K. Kalantar-Zadeh

Research output: Contribution to journalArticlepeer-review

Abstract

Background/Aims: Hyperphosphatemia is associated with higher mortality and increased incidence of end-stage renal disease in patients with non-dialysis dependent CKD( NDD-CKD), but there has not been a concomitant assessment of mortality and progressive kidney disease that would also account for cumulative effects of hyperphosphatemia. Methods: In order to account for the cumulative effects of abnormal serum phosphorus we examined associations of not only baseline, but also time-averaged serum phosphorus levels with all-cause mortality, the composite ofmortality or ESRD and the slopes of estimated glomerular filtration rate (eGFR), by using Cox models and mixed effects models in a contemporary cohort of 713 males with moderate and advanced NDD-CKD. Results: Higher baseline and time-averaged serum phosphorus were both associated withmortality and with the composite outcome. A 1 mg/dl higher time-averaged serum phosphorus was associated with a multivariable adjusted hazard ratio of all-cause mortality (95% CI) of 1.56 (1.19 - 2.05), p = 0.001. Higher serum phosphorus was associated with a steeper slope of eGFR in unadjusted analyses, but this association became non-significant after multivariable adjustments. Conclusion: The cumulative burden of hyperphosphatemia is associated with increased mortality in patients with moderate and advanced NDD-CKD. Clinical trials are needed to determine if lowering serum phosphorus can result in improved mortality in this population.

Original languageEnglish (US)
Pages (from-to)268-275
Number of pages8
JournalClinical nephrology
Volume73
Issue number4
DOIs
StatePublished - Apr 2010
Externally publishedYes

Keywords

  • Chronic kidney disease
  • Glomerular filtration rate
  • Mortality
  • Phosphorus

ASJC Scopus subject areas

  • Nephrology

Fingerprint

Dive into the research topics of 'Outcomes associated with serum phosphorus level in males with non-dialysis dependent chronic kidney disease'. Together they form a unique fingerprint.

Cite this