Decreased kidney function is a significant factor associated with silent cerebral infarction and periventricular hyperintensities.

BACKGROUND/AIMS: Silent cerebral lacunar infarction (SCI) and periventricular hyperintensities (PVH) have been reported to be markers of ischemic cerebral small-vessel disease and risk factors for future cerebrovascular events in the general population. The relationship between CKD and SCI/PVH is examined.

METHODS

In this cross-sectional study, brain magnetic resonance imaging was performed with a 1.5-T system in 324 predialysis CKD patients and in 60 normal subjects.

RESULTS

SCI was found in 103 CKD patients (31.8%), and PVH was found in 174 CKD patients (53.7%). SCI/PVH were more prevalent in patients with higher blood pressure, advanced age and decreased kidney function. There was a significant association between the prevalence of SCI/PVH and the CKD stage, with greater prevalence of SCI/PVH as the CKD stage advanced (p < 0.0001). PVH grade also advanced as the CKD stage advanced. The estimated glomerular filtration rate was a significant factor associated with the presence of SCI/PVH, independent of any other factors. There was a strong association between the prevalence of SCI/PVH (p < 0.0001).

CONCLUSION

In CKD patients, decreased kidney function is a significant factor associated with SCI/PVH, both of which are significantly associated with each other. These results suggest that CKD patients with SCI/PVH are at greater risk of future cerebrovascular events.