Changes in renal function after implantation of continuous-flow left ventricular assist devices - PubMed
- ️Sun Jan 01 2012
. 2012 Jan 3;59(1):26-36.
doi: 10.1016/j.jacc.2011.09.038.
Yan Topilsky, John A Schirger, Zhuo Li, Yanjun Zhao, Barry A Boilson, Alfredo L Clavell, Richard J Rodeheffer, Robert P Frantz, Brooks S Edwards, Naveen L Pereira, Lyle Joyce, Richard Daly, Soon J Park, Sudhir S Kushwaha
Affiliations
- PMID: 22192665
- DOI: 10.1016/j.jacc.2011.09.038
Free article
Changes in renal function after implantation of continuous-flow left ventricular assist devices
Tal Hasin et al. J Am Coll Cardiol. 2012.
Free article
Abstract
Objectives: The aim of this study was to determine renal outcomes after left ventricular assist device (LVAD) implantation.
Background: Renal dysfunction before LVAD placement is frequent, and it is unclear whether it is due to primary renal disease or to poor perfusion.
Methods: A retrospective single-center analysis was conducted in 83 consecutive patients implanted with HeartMate II continuous-flow LVADs (Thoratec Corp., Pleasanton, California). Calculated glomerular filtration rate (GFR) was assessed on admission and 1, 3, and 6 months after implantation. To define predictors for improvement in GFR, clinical variables were examined in patients with decreased renal function (GFR <60 ml/min/1.73 m(2)) before LVAD, surviving and dialysis-free at 1 month (n = 44).
Results: GFR significantly increased from admission (53.2 ± 21.4 ml/min/1.73 m(2)) to 1 month after LVAD implantation (87.4 ± 27.9 ml/min/1.73 m(2)) (p < 0.0001). Subsequently, at 3 and 6 months, GFR remained significantly (p < 0.0001) above pre-LVAD values. Of the 51 patients with GFRs <60 ml/min/1.73 m(2) before LVAD surviving at 1 month, 34 (67%) improved to GFRs >60 ml/min/1.73 m(2). Univariate pre-operative predictors for improvement in renal function at 1 month included younger age (p = 0.049), GFR improvement with optimal medical therapy (p < 0.001), intra-aortic balloon pump use (p = 0.004), kidney length above 10 cm (p = 0.023), no treatment with angiotensin-converting enzyme inhibitors or angiotensin receptor blockers (p = 0.029), higher bilirubin (p = 0.002), higher Lietz-Miller score (p = 0.019), and atrial fibrillation (p = 0.007). Multivariate analysis indicated pre-operative improved GFR (slope = 0.5 U per unit improved; 95% confidence interval: 0.2 to 0.8; p = 0.003), atrial fibrillation (slope = 27; 95% confidence interval: 8 to 46; p = 0.006), and intra-aortic balloon pump use (slope = 14; 95% confidence interval: 2 to 26; p = 0.02) as independent predictors.
Conclusions: In most patients with end-stage heart failure considered for LVAD implantation, renal dysfunction is reversible and likely related to poor renal perfusion.
Copyright © 2012 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
Comment in
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Renal failure following ventricular assist device placement.
Rajagopalan N, Hoopes CW. Rajagopalan N, et al. J Am Coll Cardiol. 2012 Jun 12;59(24):2220; author reply p. 2220. doi: 10.1016/j.jacc.2012.01.062. J Am Coll Cardiol. 2012. PMID: 22676945 No abstract available.
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