Relationships between serum and urine phosphorus with all-cause and cardiovascular mortality: the Osteoporotic Fractures in Men (MrOS) Study.
Am J Kidney Dis
; 61(4): 555-63, 2013 Apr.
Article
em En
| MEDLINE
| ID: mdl-23261120
ABSTRACT
BACKGROUND:
Serum phosphorus is associated with cardiovascular disease (CVD) in the general population, but may not comprehensively reflect phosphorus homeostasis. Whether urine phosphorus-creatinine ratio (a marker of intestinal absorption) or urine fractional excretion of phosphorus (FEPi; a marker of urinary phosphorus handling) is associated with risk of mortality or CVD is uncertain. STUDYDESIGN:
Prospective observational study. SETTING &PARTICIPANTS:
1,325 community-dwelling men 65 years or older participating in the MrOS Study. PREDICTOR Serum phosphorus, urine phosphorus-creatinine ratio, and FEPi.OUTCOMES:
All-cause and CVD death.RESULTS:
Mean age was 74 ± 6 (SD) years, estimated glomerular filtration rate was 75 ± 16 mL/min/1.73 m(2), and serum phosphorus level was 3.2 ± 0.4 mg/dL. During a median follow-up of 9.3 years, there were 364 (120 CVD) deaths. After adjustment for demographics, CVD risk factors, and kidney function, the risks of all-cause death in the highest quartiles of serum phosphorus (≥3.6 mg/dL), urine phosphorus-creatinine ratio (≥0.55), and FEPi (≥18%) were 1.63 (95% CI, 1.23-2.17), 1.22 (95% CI, 0.90-1.65), and 0.88 (95% CI, 0.64-1.23), respectively, compared to the lowest quartiles of each. Results were similar for CVD death. Results also were similar in those with estimated glomerular filtration rate ≥60 and <60 mL/min/1.73 m(2).LIMITATIONS:
Older all-male cohort. Few had advanced chronic kidney disease. Spot urine specimens were used.CONCLUSIONS:
In community-living older men, higher serum phosphorus concentrations are associated with all-cause and CVD death. In contrast, urine phosphorus-creatinine ratio and FEPi are not. These findings do not support using urine phosphorus-creatinine ratio or FEPi as adjuvant measures to predict risk of mortality or CVD in the general population.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fósforo
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Doenças Cardiovasculares
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Fraturas por Osteoporose
Tipo de estudo:
Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Aged80
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Humans
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Male
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article