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Is there a correlation between an eGFR slope measured over a 5-year period and incident cardiovascular events in the following 5 years among a Flemish general practice population: a retrospective cohort study.

Abstract：

OBJECTIVES:To examine if the estimated glomerular filtration rate (eGFR) slope over a 5-year period is related to incident cardiovascular (CV) events in the following 5 years. DESIGN:Retrospective cohort study. SETTING:Primary care. PARTICIPANTS:All patients aged ≥50 years with at least four eGFR measurements between 01 January 2006 and 31 December 2010 were included in the study. OUTCOME MEASURES:During the follow-up period (01 January 2011 until 31 December 2015), CV events (acute myocardial infarction, stroke (cerebrovascular accident (CVA)/transient ischemic attack (TIA)), peripheral arterial disease and acute heart failure) were identified. METHODS:The slope was calculated by the least square method (in mL/min/year). The following slope categories were considered: (-1 to 1), (-3 to -1) (-5 to -3), ≤-5, (1 to 3), (3 to 5) and ≥5.00 mL/min/year. Cox proportional hazards model was used to assess the association between eGFR slope and incidence of CV events. Survival probability from CV events was estimated per slope category. RESULTS:19 567 patients had at least four eGFR measurements, of whom 52% was female. 12% of the ≤-5 slope category developed a new CV event in comparison to 7.8% of the reference group and 5.4% of the ≥5 slope category. Survival rates were worst in those with a slope ≤-5. Patients with a slope of (-5 to -3) and ≤-5 had an adjusted HR of 1.37 and 1.55, respectively. Most patients with a slope <-3 mL/min had an eGFR still >60 mL/min. CONCLUSIONS:Negative eGFR slopes of at least 3 mL/min/year give irrespectively of the eGFR itself a higher risk of CV events compared with patient groups with stable or improved kidney function. So the eGFR slope identifies an easy to define group of patients with a high risk for developing CV events.

journal_name

BMJ Open

journal_title

BMJ open

authors

Van Pottelbergh G,Mamouris P,Opdeweegh N,Vaes B,Goderis G,Van Den Akker M

doi

10.1136/bmjopen-2018-023594

subject

Has Abstract

pub_date

2018-11-12 00:00:00

pages

e023594

issue

issn

2044-6055

pii

bmjopen-2018-023594

journal_volume

pub_type

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Is there a correlation between an eGFR slope measured over a 5-year period and incident cardiovascular events in the following 5 years among a Flemish general practice population: a retrospective cohort study.