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  • Title: A longitudinal study of left ventricular function and structure from CKD to ESRD: the CRIC study.
    Author: Bansal N, Keane M, Delafontaine P, Dries D, Foster E, Gadegbeku CA, Go AS, Hamm LL, Kusek JW, Ojo AO, Rahman M, Tao K, Wright JT, Xie D, Hsu CY, CRIC Study Investigators.
    Journal: Clin J Am Soc Nephrol; 2013 Mar; 8(3):355-62. PubMed ID: 23411431.
    Abstract:
    BACKGROUND AND OBJECTIVES: Abnormal left ventricular structure and function are associated with increased risk of adverse outcomes among patients with CKD and ESRD. A better understanding of changes in left ventricular mass and ejection fraction during the transition from CKD to ESRD may provide important insights to opportunities to improve cardiac outcomes. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This was a longitudinal study of a subset of participants of the Chronic Renal Insufficiency Cohort who were enrolled from 2003 to 2007 and followed through January of 2011. Participants were included if they had serial echocardiograms performed at advanced CKD (defined as estimated GFR<20 ml/min per 1.73 m(2)) and again after ESRD (defined as need for hemodialysis or peritoneal dialysis). RESULTS: A total of 190 participants (44% female, 66% black) had echocardiograms during advanced CKD and after ESRD. Mean (SD) estimated GFR at advanced CKD was 16.9 (3.5) ml/min per 1.73 m(2). Mean (SD) time between the advanced CKD echocardiogram and ESRD echocardiogram was 2.0 (1.0) years. There was no significant change in left ventricular mass index (62.3-59.5 g/m(2.7), P=0.10) between advanced CKD and ESRD; however, ejection fraction significantly decreased (53%-50%, P=0.002). Interactions for age, race, dialysis modality, and diabetes status were not significant (P>0.05). CONCLUSIONS: Mean left ventricular mass index did not change significantly from advanced CKD to ESRD; however, ejection fraction declined during this transition period. Although left ventricular mass index is fixed by advanced stages of CKD, ejection fraction decline during more advanced stages of CKD may be an important contributor to cardiovascular disease and mortality after dialysis.
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