CLINICAL STUDY
Reduced kidney function and anemia as risk factors for mortality in patients with left ventricular dysfunction
Amin Al-Ahmad, MD*,
William M. Rand, PhD ,
Guruprasad Manjunath, MD ,
Marvin A. Konstam, MD*,
Deeb N. Salem, MD*,
Andrew S. Levey, MD and
Mark J. Sarnak, MD
* Division of Cardiology, Department of Medicine, New England Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
Department of Community Health, Tufts University School of Medicine, Boston, Massachusetts, USA
Division of Nephrology, Department of Medicine, New England Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
Manuscript received February 23, 2001;
revised manuscript received May 21, 2001,
accepted June 11, 2001.
Reprint requests and correspondence: Dr. Mark J. Sarnak, New England Medical Center, Box 391, 750 Washington Street, Boston, Massachusetts 02111 msarnak{at}lifespan.org
OBJECTIVES
We sought to evaluate the relationship between the level of kidney function, level of hematocrit and their interaction on all-cause mortality in patients with left ventricular (LV) dysfunction.
BACKGROUND
Anemia and reduced kidney function occur frequently in patients with heart failure. The level of hematocrit and its relationship with renal function have not been evaluated as risk factors for mortality in patients with LV dysfunction.
METHODS
We retrospectively examined the Studies Of LV Dysfunction (SOLVD) database. Glomerular filtration rate (GFR) was predicted using a recently validated formula. Kaplan-Meier survival analyses were used to compare survival times between groups stratified by level of kidney function (predicted GFR) and hematocrit. Cox proportional-hazards regression was used to explore the relationship of survival time to level of kidney function, hematocrit and their interaction.
RESULTS
Lower GFR and hematocrit were associated with a higher prevalence of traditional cardiovascular risk factors. In univariate analysis, reduced kidney function and lower hematocrit, in men and in women, were risk factors for all-cause mortality (p < 0.001 for both). After adjustment for other factors significant in univariate analysis, a 10 ml/min/1.73 m2 lower GFR and a 1% lower hematocrit were associated with a 1.064 (95% CI: 1.033, 1.096) and 1.027 (95% CI: 1.015, 1.038) higher risk for mortality, respectively. At lower GFR and lower hematocrit, the risk was higher (p = 0.022 for the interaction) than that predicted by both factors independently.
CONCLUSIONS
Decreased kidney function and anemia are risk factors for all-cause mortality in patients with LV dysfunction, especially when both are present. These relationships need to be confirmed in additional studies.
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Abbreviations and Acronyms
| | ACE | = angiotensin-converting enzyme | | ESRD | = end-stage renal disease | | GFR | = glomerular filtration rate | | HF | = heart failure | | LV | = left ventricle or left ventricular | | MDRD | = Modification of Diet in Renal Disease | | NYHA | = New York Heart Association | | SOLVD | = Studies Of Left Ventricular Dysfunction |
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F. C. Brosius III, T. H. Hostetter, E. Kelepouris, M. M. Mitsnefes, S. M. Moe, M. A. Moore, S. Pennathur, G. L. Smith, and P. W.F. Wilson
REPRINT Detection of Chronic Kidney Disease in Patients With or at Increased Risk of Cardiovascular Disease: A Science Advisory From the American Heart Association Kidney and Cardiovascular Disease Council; the Councils on High Blood Pressure Research, Cardiovascular Disease in the Young, and Epidemiology and Prevention; and the Quality of Care and Outcomes Research Interdisciplinary Working Group: Developed in Collaboration With the National Kidney Foundation
Hypertension,
October 1, 2006;
48(4):
751 - 755.
[Abstract]
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F. C. Brosius III, T. H. Hostetter, E. Kelepouris, M. M. Mitsnefes, S. M. Moe, M. A. Moore, S. Pennathur, G. L. Smith, and P. W.F. Wilson
Detection of Chronic Kidney Disease in Patients With or at Increased Risk of Cardiovascular Disease: A Science Advisory From the American Heart Association Kidney and Cardiovascular Disease Council; the Councils on High Blood Pressure Research, Cardiovascular Disease in the Young, and Epidemiology and Prevention; and the Quality of Care and Outcomes Research Interdisciplinary Working Group: Developed in Collaboration With the National Kidney Foundation
Circulation,
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[Abstract]
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J. E. W. Hertel, H. R. Locay, D. S. Scarlata, R. Prathikanti, and P. K. Audhya
Darbepoetin Alfa Administration to Achieve and Maintain Target Hemoglobin Levels for 1 Year in Patients With Chronic Kidney Disease
Mayo Clin. Proc.,
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[Abstract]
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A. M. Walker, G. Schneider, J. Yeaw, B. Nordstrom, S. Robbins, and D. Pettitt
Anemia as a Predictor of Cardiovascular Events in Patients with Elevated Serum Creatinine
J. Am. Soc. Nephrol.,
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[Abstract]
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W. F. Keane, Z. Zhang, P. A. Lyle, M. E. Cooper, D. de Zeeuw, J.-P. Grunfeld, J. P. Lash, J. B. McGill, W. E. Mitch, G. Remuzzi, et al.
Risk Scores for Predicting Outcomes in Patients with Type 2 Diabetes and Nephropathy: The RENAAL Study
Clin. J. Am. Soc. Nephrol.,
July 1, 2006;
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[Abstract]
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A. S. Go, J. Yang, L. M. Ackerson, K. Lepper, S. Robbins, B. M. Massie, and M. G. Shlipak
Hemoglobin Level, Chronic Kidney Disease, and the Risks of Death and Hospitalization in Adults With Chronic Heart Failure: The Anemia in Chronic Heart Failure: Outcomes and Resource Utilization (ANCHOR) Study
Circulation,
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[Abstract]
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L Grigorian Shamagian, A Varela Roman, J M Garcia-Acuna, P Mazon Ramos, A Virgos Lamela, and J R Gonzalez-Juanatey
Anaemia is associated with higher mortality among patients with heart failure with preserved systolic function
Heart,
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[Abstract]
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Y.-D. Tang and S. D. Katz
Anemia in Chronic Heart Failure: Prevalence, Etiology, Clinical Correlates, and Treatment Options
Circulation,
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G. L. Smith, M. G. Shlipak, E. P. Havranek, J. M. Foody, F. A. Masoudi, S. S. Rathore, and H. M. Krumholz
Serum urea nitrogen, creatinine, and estimators of renal function: mortality in older patients with cardiovascular disease.
Arch Intern Med,
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[Abstract]
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G. L. Smith, J. H. Lichtman, M. B. Bracken, M. G. Shlipak, C. O. Phillips, P. DiCapua, and H. M. Krumholz
Renal Impairment and Outcomes in Heart Failure: Systematic Review and Meta-Analysis
J. Am. Coll. Cardiol.,
May 16, 2006;
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[Abstract]
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B. F. Culleton, B. J. Manns, J. Zhang, M. Tonelli, S. Klarenbach, and B. R. Hemmelgarn
Impact of anemia on hospitalization and mortality in older adults
Blood,
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A. Ishani, G. A. Grandits, R. H. Grimm, K. H. Svendsen, A. J. Collins, R. J. Prineas, J. D. Neaton, and for the MRFIT Research Group
Association of Single Measurements of Dipstick Proteinuria, Estimated Glomerular Filtration Rate, and Hematocrit with 25-Year Incidence of End-Stage Renal Disease in the Multiple Risk Factor Intervention Trial
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E. O'Meara, T. Clayton, M. B. McEntegart, J. J.V. McMurray, C. C. Lang, S. D. Roger, J. B. Young, S. D. Solomon, C. B. Granger, J. Ostergren, et al.
Clinical Correlates and Consequences of Anemia in a Broad Spectrum of Patients With Heart Failure: Results of the Candesartan in Heart Failure: Assessment of Reduction in Mortality and Morbidity (CHARM) Program
Circulation,
February 21, 2006;
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H. L. Hillege, D. Nitsch, M. A. Pfeffer, K. Swedberg, J. J.V. McMurray, S. Yusuf, C. B. Granger, E. L. Michelson, J. Ostergren, J. H. Cornel, et al.
Renal Function as a Predictor of Outcome in a Broad Spectrum of Patients With Heart Failure
Circulation,
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C. W. Yancy, M. Lopatin, L. W. Stevenson, T. De Marco, G. C. Fonarow, and for the ADHERE Scientific Advisory Committee and I
Clinical Presentation, Management, and In-Hospital Outcomes of Patients Admitted With Acute Decompensated Heart Failure With Preserved Systolic Function: A Report From the Acute Decompensated Heart Failure National Registry (ADHERE) Database
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S. J. Pocock, D. Wang, M. A. Pfeffer, S. Yusuf, J. J.V. McMurray, K. B. Swedberg, J. Ostergren, E. L. Michelson, K. S. Pieper, C. B. Granger, et al.
Predictors of mortality and morbidity in patients with chronic heart failure
Eur. Heart J.,
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G. M. Felker, W. G. Stough, L. K. Shaw, and C. M. O'Connor
Anaemia and coronary artery disease severity in patients with heart failure
Eur J Heart Fail,
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E. O'Meara, K. S. Chong, R. S. Gardner, A. G. Jardine, J. B. Neilly, and T. A. McDonagh
The Modification of Diet in Renal Disease (MDRD) equations provide valid estimations of glomerular filtration rates in patients with advanced heart failure
Eur J Heart Fail,
January 1, 2006;
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[Abstract]
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N. A. Khan, I. Ma, C. R. Thompson, K. Humphries, D. N. Salem, M. J. Sarnak, and A. Levin
Kidney Function and Mortality among Patients with Left Ventricular Systolic Dysfunction
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M. A. Konstam, B. Czerska, M. Bohm, R. M. Oren, J. Sadowski, S. Khanal, W. T. Abraham, A. Wasler, J. B. Dahm, A. Gavazzi, et al.
Continuous Aortic Flow Augmentation: A Pilot Study of Hemodynamic and Renal Responses to a Novel Percutaneous Intervention in Decompensated Heart Failure
Circulation,
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J.-P. Collet, G. Montalescot, G. Agnelli, F. Van de Werf, E. P. Gurfinkel, J. Lopez-Sendon, C. V. Laufenberg, M. Klutman, N. Gowda, D. Gulba, et al.
Non-ST-segment elevation acute coronary syndrome in patients with renal dysfunction: benefit of low-molecular-weight heparin alone or with glycoprotein IIb/IIIa inhibitors on outcomes. The Global Registry of Acute Coronary Events
Eur. Heart J.,
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C. Opasich, M. Cazzola, L. Scelsi, S. De Feo, E. Bosimini, R. Lagioia, O. Febo, R. Ferrari, A. Fucili, R. Moratti, et al.
Blunted erythropoietin production and defective iron supply for erythropoiesis as major causes of anaemia in patients with chronic heart failure
Eur. Heart J.,
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