Level of Kidney Function Determines Cardiovascular Fate After Coronary Bypass Graft Surgery
2006; Lippincott Williams & Wilkins; Volume: 113; Issue: 8 Linguagem: Inglês
10.1161/circulationaha.105.609289
ISSN1524-4539
AutoresPantelis Sarafidis, George L. Bakris,
Tópico(s)Acute Kidney Injury Research
ResumoHomeCirculationVol. 113, No. 8Level of Kidney Function Determines Cardiovascular Fate After Coronary Bypass Graft Surgery Free AccessEditorialPDF/EPUBAboutView PDFView EPUBSections ToolsAdd to favoritesDownload citationsTrack citationsPermissions ShareShare onFacebookTwitterLinked InMendeleyReddit Jump toFree AccessEditorialPDF/EPUBLevel of Kidney Function Determines Cardiovascular Fate After Coronary Bypass Graft Surgery Panteleimon A. Sarafidis, MD and George L. Bakris, MD Panteleimon A. SarafidisPanteleimon A. Sarafidis From the Hypertension/Clinical Research Center, Department of Preventive Medicine, Rush University Medical Center, Chicago, Ill. and George L. BakrisGeorge L. Bakris From the Hypertension/Clinical Research Center, Department of Preventive Medicine, Rush University Medical Center, Chicago, Ill. Originally published28 Feb 2006https://doi.org/10.1161/CIRCULATIONAHA.105.609289Circulation. 2006;113:1046–1047The traditional risk factors for cardiovascular (CV) disease, ie, hypertension, diabetes, or metabolic syndrome, are also risk factors for chronic kidney disease development.1 For more than a quarter of a century, the association between late-stage kidney disease, ie, glomerular filtration rate (GFR) <30 mL/min, and higher CV death rate has been recognized.2 Only recently, however, have studies in the general population3–5 and in cohorts with previous CV events6 linked the continuum of increasing CV risk with decreasing kidney function. This is related in part to the fact that current studies used validated formulas derived from kidney disease outcome trials7,8 to find an estimated GFR (eGFR) rather than simply measuring serum creatinine randomly.Articles pp 1056 and 1063All studies published within the last decade indicate that when GFR falls to <60 mL/min (stage 3 nephropathy), a significant increase in CV events occurs.5,6 This may relate to the fact that as GFR falls to <60 mL/min, many physiological and regulatory functions of the kidney start to wane; such functions include reductions in 1,25[OH] vitamin D and erythropoietin synthesis. Alterations in these regulatory hormones produce, over time, a vascular environment that promotes increased vascular calcification, reduced oxygen carrying capacity, and thus increased CV risk.1Subtle changes in calcium/phosphate homeostasis indicated that initial decreases in 1,25[OH] vitamin D and subsequent increases in parathyroid hormone are detectable when GFR is just <60 mL/min and become obvious when GFR is 55 also can occur at this GFR level and is associated with an increased prevalence of vascular calcification, arteriosclerosis, and CV risk, as well as increased CV mortality.9,10A second factor that may contribute to a higher CV event rate in these patients is decreased erythropoietin production and resultant anemia.11 An apparent inverse association also exists between the level of hemoglobin and CV risk. At levels 65 years of age) with eGFR values of 50 to 60 mL/min can have nearly normal creatinine levels and thus higher CV risk.19In this issue of Circulation, 2 studies provide additional data in this understudied cohort.20,21 Cooper et al20 reviewed the Society of Thoracic Surgeons National Adult Cardiac Database starting from July 2000 through December 2003. In the &500 000 patients evaluated, 51% had stage 2 nephropathy (GFR of 60 to 90 mL · min−1 · 1.73 m−2), 24% had stage 3 nephropathy (GFR of 30 to 59 mL · min−1 · 1.73 m−2), and 3.5% had stages 4 and 5. Operative mortality increased with declining level of eGFR; it rose from 1.3% in stage 2 nephropathy to >9% for those with stages 4 and 5 nephropathy. This study also confirmed earlier findings of a morbidity and mortality increase among those with stage 5 nephropathy requiring dialysis. Finally, they found that preoperative eGFR was one of the most powerful predictors or CV outcome.In the second study, Hillis et al21 collected data at the time of CABG on 2067 consecutive patients who did not require preoperative dialysis to evaluate the importance of eGFR on overall mortality. After a median follow-up of 2.3 years, they noted that mean eGFR was significantly lower in patients who died during follow-up compared with survivors. These investigators also noted that the eGFR was an independent predictor of mortality during the follow-up period and that for every 10–mL · min−1 · 1.73 m−2–higher eGFR within the cohort examined, overall mortality was reduced by 20% and 30-day postoperative mortality by 32%.Although these studies clearly expand our database regarding kidney function and CV outcomes in postsurgical CABG patients, they have limitations.20,21 Neither addressed issues of postoperative kidney function or possible differences in eGFR before and after surgery. Neither included information about medications that could affect kidney function. Finally, neither measured urine albumin, a well-known marker of CV risk, independently of kidney function.22 Nevertheless, these studies expand our armamentarium of data indicating that the level of kidney function is an independent risk factor for CV morbidity and mortality.In these and other studies, the risk of death and related morbidities rises slowly as the eGFR approaches 60 mL/min; events increase significantly at levels <60 mL/min and are very prominent at eGFR values <45 mL/min. From these data, all patients undergoing CABG surgery should have their eGFR assessed as part of the preoperative laboratory evaluation. Moreover, eGFR should be integrated into clinical risk prediction models for morbidity and mortality after CABG.The opinions expressed in this article are not necessarily those of the editors or of the American Heart Association.DisclosuresNone.FootnotesCorrespondence to George L. Bakris, MD, Hypertension/Clinical Research Center, Department of Preventive Medicine, Rush University Medical Center, 1700 W Van Buren, Suite 470, Chicago, IL 60612. E-mail [email protected] References 1 Sarnak MJ. Cardiovascular complications in chronic kidney disease. Am J Kidney Dis. 2003; 41 (suppl): 11–17.CrossrefMedlineGoogle Scholar2 Maher JF, Bryan CW, Ahearn DJ. Prognosis of chronic renal failure, II: factors affecting survival. Arch Intern Med. 1975; 135: 273–278.CrossrefMedlineGoogle Scholar3 Muntner P, He J, Hamm L, Loria C, Whelton PK. Renal insufficiency and subsequent death resulting from cardiovascular disease in the United States. J Am Soc Nephrol. 2002; 13: 745–753.CrossrefMedlineGoogle Scholar4 Manjunath G, Tighiouart H, Ibrahim H, Macleod B, Salem DN, Griffith JL, Coresh J, Levey AS, Sarnak MJ. Level of kidney function as a risk factor for atherosclerotic cardiovascular outcomes in the community. 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JAMA. 2005; 293: 1609–1616.CrossrefMedlineGoogle Scholar Previous Back to top Next FiguresReferencesRelatedDetailsCited By Gelsomino S, Bonacchi M, Lucà F, Barili F, Del Pace S, Parise O, Johnson D and Gulizia M (2019) Comparison between three different equations for the estimation of glomerular filtration rate in predicting mortality after coronary artery bypass, BMC Nephrology, 10.1186/s12882-019-1564-y, 20:1, Online publication date: 1-Dec-2019. Gelsomino S, Del Pace S, Parise O, Caciolli S, Matteucci F, Fradella G, Bonacchi M, Fusco S, Lucà F and Marchionni N (2017) Impact of renal function impairment assessed by CKDEPI estimated glomerular filtration rate on early and late outcomes after coronary artery bypass grafting, International Journal of Cardiology, 10.1016/j.ijcard.2016.10.059, 227, (778-787), Online publication date: 1-Jan-2017. Martin-Gonzalez T, Pinçon C, Hertault A, Maurel B, Labbé D, Spear R, Sobocinski J and Haulon S (2015) Renal outcomes analysis after endovascular and open aortic aneurysm repair, Journal of Vascular Surgery, 10.1016/j.jvs.2015.03.075, 62:3, (569-577), Online publication date: 1-Sep-2015. Martin-Gonzalez T, Pinçon C, Maurel B, Hertault A, Sobocinski J, Spear R, Le Roux M, Azzaoui R, Mastracci T and Haulon S (2015) Renal Outcomes Following Fenestrated and Branched Endografting, European Journal of Vascular and Endovascular Surgery, 10.1016/j.ejvs.2015.04.011, 50:4, (420-430), Online publication date: 1-Oct-2015. Saratzis A, Sarafidis P, Melas N and Khaira H (2014) Comparison of the impact of open and endovascular abdominal aortic aneurysm repair on renal function, Journal of Vascular Surgery, 10.1016/j.jvs.2014.03.282, 60:3, (597-603), Online publication date: 1-Sep-2014. 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Ivens K and Grabensee B (2006) Zusammenhang zwischen kardiovaskulären Erkrankungen und Progression von NierenerkrankungenAssociation between cardiovascular diseases and progression of chronic kidney disease, Der Nephrologe, 10.1007/s11560-006-0044-0, 1:4, (225-232), Online publication date: 1-Nov-2006. Sarafidis P and Bakris G (2006) Microalbuminuria and chronic kidney disease as risk factors for cardiovascular disease, Nephrology Dialysis Transplantation, 10.1093/ndt/gfl309, 21:9, (2366-2374), Online publication date: 1-Sep-2006. February 28, 2006Vol 113, Issue 8 Advertisement Article InformationMetrics https://doi.org/10.1161/CIRCULATIONAHA.105.609289PMID: 16505186 Originally publishedFebruary 28, 2006 KeywordsmortalityEditorialsmorbiditysurgerykidneyPDF download Advertisement SubjectsChronic Ischemic Heart DiseaseEpidemiology
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