Chronic kidney disease and 10-year risk of cardiovascular death

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Abstract

Background:

In recent clinical guidelines, individuals with chronic kidney disease are considered to have a similar 10-year absolute risk of cardiovascular death as individuals with diabetes or established cardiovascular disease. There is limited evidence to support this claim.

Methods:

We investigated the 10-year risk for cardiovascular death in individuals with moderate or severe chronic kidney disease (glomerular filtration rate of 30–60 or <30 mL/min/1.73 m2, respectively) in a cohort of primary care health check-ups in Stockholm, Sweden (n = 295,191, 46% women, 4290 cardiovascular deaths during 10 years follow-up). We also assessed the risk associated with diabetes or cardiovascular disease. The inclusion criteria, exposure, study outcome and follow-up period adhered strictly to the definitions of the European Society of Cardiology guidelines.

Results:

The absolute 10-year risk of cardiovascular death was 3.9% and 14.0% in individuals with moderate and severe chronic kidney disease, respectively, but was substantially lower in women and in younger individuals. The risk in individuals with prevalent diabetes and cardiovascular disease was approximately two and three times higher compared to the risk estimate for moderate chronic kidney disease (hazard ratio (HR) 4.1, 95% confidence interval (CI) 3.8–4.5 and HR 6.2, 95% CI 5.7–6.7 vs. HR 2.3 95% CI 2.0–2.6, respectively) while the risk for individuals with severe chronic kidney disease appeared more congruent to that of diabetes and cardiovascular disease (HR 5.5, 95% CI 3.3–8.9).

Conclusions:

Although moderate chronic kidney disease is an independent predictor for an increased 10-year risk of cardiovascular death, only those with severe chronic kidney disease had similar risk to those with diabetes or cardiovascular disease.

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