Observational multicenter study to evaluate the prevalence and prognosis of subclinical atheromatosis in a Spanish chronic kidney disease cohort: baseline data from the NEFRONA studyReport as inadecuate




Observational multicenter study to evaluate the prevalence and prognosis of subclinical atheromatosis in a Spanish chronic kidney disease cohort: baseline data from the NEFRONA study - Download this document for free, or read online. Document in PDF available to download.

BMC Nephrology

, 15:168

Epidemiology and Health Outcomes

Abstract

BackgroundCardiovascular events CVE are more prevalent in chronic kidney disease CKD than in general population, being the main cause of morbimortality. Specific risk factors related to CKD have been suggested, because traditional factors do not fully explain this increase in cardiovascular disease rates. However, the role of atheromatosis, its pathogenesis and evolution are still unclear. The potential use of diagnostic tests to detect subclinical atheromatosis has to be determined.

MethodsNEFRONA is a prospective multicenter cohort study. 2445 CKD subjects were enrolled from 81 Spanish hospitals and dialysis clinics, from 2010 to 2012. Eligibility criteria included: 18 to 74 years old, CKD stage 3 or higher, and no previous CVE. 559 non-CKD controls were also recruited. Demographical, clinical and analytical data were collected. Carotid and femoral ultrasounds were performed by a single trained team to measure carotid intima-media thickness cIMT and detect atheromatous plaques. Ankle-brachial index ABI was measured.

ResultsDifferences in age, sex and prevalence and control of cardiovascular risk factors were found between controls and CKD patients. These differences are similar to those described in epidemiological studies.

No difference was found regarding cIMT between controls and CKD when subjects with plaques in common carotid arteries were omitted; earlier CKD stages had higher values. CKD patients had a higher rate of atheromatous plaques, with no difference between stages in the unadjusted analysis. A group of patients had plaques in femoral arteries but were plaque-free in carotid arteries, and would have gone underdiagnosed without the femoral study. The percentage of pathologic ABI was higher in CKD, with higher prevalence in more advanced stages, and a higher rate of ABI >1.4 than <0.9, suggesting more vascular calcification.

ConclusionsNEFRONA is the first large study describing the actual prevalence of subclinical atheromatosis across different CKD stages. There is a very high rate of atheromatous plaques and pathologic ABI in CKD. Prospective data will add important information to the pathogenesis and evolution of atheromatosis in CKD, compared to non-CKD subjects.

KeywordsChronic kidney disease Cardiovascular disease Atheromatosis Vascular calcification Intima-media thickness Ankle-brachial index Electronic supplementary materialThe online version of this article doi:10.1186-1471-2369-15-168 contains supplementary material, which is available to authorized users.

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Author: David Arroyo - Angels Betriu - Montserrat Martinez-Alonso - Teresa Vidal - Jose Manuel Valdivielso - Elvira Fernández

Source: https://link.springer.com/







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