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Comparative Study
. 2008 Jul;3(4):1084-9.
doi: 10.2215/CJN.04411007. Epub 2008 Mar 12.

Combined effect of chronic kidney disease and peripheral arterial disease on all-cause mortality in a high-risk population

Yin Ping Liew  1 , John R Bartholomew, Sevag Demirjian, Jeannie Michaels, Martin J Schreiber Jr
Affiliations
Comparative Study

Combined effect of chronic kidney disease and peripheral arterial disease on all-cause mortality in a high-risk population

Yin Ping Liew et al. Clin J Am Soc Nephrol. 2008 Jul.

Abstract

Background and objectives: Chronic kidney disease (estimated glomerular filtration rate <60 ml/min per 1.73 m(2)) and peripheral arterial disease (ankle-brachial index <0.9) independently predict mortality. It was hypothesized that the risk for death is higher in patients with both chronic kidney disease and peripheral arterial disease compared with those with chronic kidney disease or peripheral arterial disease alone.

Design, setting, participants, & measurements: A total of 1079 patients who had an ankle-brachial index and serum creatinine recorded within 90 d of each other in 1999 were studied retrospectively. Glomerular filtration rate was estimated using the Modification of Diet in Renal Disease equation. Patients were categorized into four groups: Chronic kidney disease and peripheral arterial disease, chronic kidney disease alone, peripheral arterial disease alone, or no chronic kidney disease or peripheral arterial disease.

Results: The overall 6-yr mortality rate was 28% (n = 284). Patients with both chronic kidney disease and peripheral arterial disease had the highest mortality rate (45%) compared with patients with chronic kidney disease alone (28%), peripheral arterial disease alone (26%), and neither condition (18%). After adjustment for clinical and demographic variables, the chronic kidney disease and peripheral arterial disease group had an increased odds for death when compared with the no chronic kidney disease or peripheral arterial disease group or the single disease groups.

Conclusions: These findings indicate that patients with both chronic kidney disease and peripheral arterial disease have a significantly higher risk for death than patients with either disease alone.

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Figures

Figure 1.
Figure 1.
(A) Distributions of chronic kidney disease (CKD) severity in the single disease CKD group and the combined CKD and peripheral arterial disease (PAD) disease group. CKD severity does not differ between the single disease group and the combined disease group. (B) Distributions of PAD severity in the single disease PAD group and the combined CKD and PAD disease group. PAD severity does not differ between the single disease group and the combined disease group. ABI, ankle-brachial index; eGFR, estimated GFR.
Figure 2.
Figure 2.
Six-year mortality rate in the four groups: CKD and PAD, CKD alone, PAD alone, and no CKD or PAD.
Figure 3.
Figure 3.
Kaplan-Meier plot of survival probability over time stratified by the four groups. Log-rank test for overall difference P < 0.0001.
See this image and copyright information in PMC

References

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