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Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
Background: Given regulatory and reimbursement changes in anemia management, we examined hemoglobin variability in a contemporary cohort of maintenance hemodialysis patients. Materials and methods: The study population included > 200,000 hemodialysis patients with Medicare parts A and B as primar...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dustri-Verlag Dr. Karl Feistle
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653974/ https://www.ncbi.nlm.nih.gov/pubmed/28899480 http://dx.doi.org/10.5414/CN109031 |
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author | Gilbertson, David T. Hu, Yan Peng, Yi Maroni, Bradley J. Wetmore, James B. |
author_facet | Gilbertson, David T. Hu, Yan Peng, Yi Maroni, Bradley J. Wetmore, James B. |
author_sort | Gilbertson, David T. |
collection | PubMed |
description | Background: Given regulatory and reimbursement changes in anemia management, we examined hemoglobin variability in a contemporary cohort of maintenance hemodialysis patients. Materials and methods: The study population included > 200,000 hemodialysis patients with Medicare parts A and B as primary payer on October 1, 2012. Based on 25(th) and 75(th) percentiles, monthly hemoglobin values were categorized as low, intermediate, or high. Six variability categories were created by patterns during the 6-month observation period. Stable categories were: always-low, always-intermediate, always-high; variable patterns were: varying between low and intermediate, intermediate and high, low and high (most-variable). Cox proportional hazard models were used to assess the association between hemoglobin variability and all-cause mortality or major adverse cardiac events (MACE). Results: The 25(th) and 75(th) hemoglobin percentiles were 10.2 and 11.5 g/dL, respectively, in 2012, vs. 11 and 12.5 g/dL in 2004. ESA doses were lower in all categories in 2012 and transfusion rates higher, particularly for always-low patients. Hemoglobin variability decreased modestly: in 2004, 6.0% were always-intermediate, vs. 9.5% in 2012. In 2012, more patients were always-high and fewer were most-variable. Mortality hazard ratios (HRs) were higher for patients with any low hemoglobin: always-low (HR, 95% CI: 2.07, 1.84 – 2.31), varying between low and intermediate (1.37, 1.29 – 1.45), and most-variable (1.23, 1.16 – 1.31); the pattern was similar for MACE. Conclusions: In 2012 vs. 2004, hemoglobin levels decreased, the range of levels narrowed, and variability decreased modestly; transfusions increased. The highest risk of mortality and MACE appeared to occur in patients with persistently low, rather than highly variable, hemoglobin levels.
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format | Online Article Text |
id | pubmed-5653974 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Dustri-Verlag Dr. Karl Feistle |
record_format | MEDLINE/PubMed |
spelling | pubmed-56539742017-11-02 Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
Gilbertson, David T. Hu, Yan Peng, Yi Maroni, Bradley J. Wetmore, James B. Clin Nephrol Research Article Background: Given regulatory and reimbursement changes in anemia management, we examined hemoglobin variability in a contemporary cohort of maintenance hemodialysis patients. Materials and methods: The study population included > 200,000 hemodialysis patients with Medicare parts A and B as primary payer on October 1, 2012. Based on 25(th) and 75(th) percentiles, monthly hemoglobin values were categorized as low, intermediate, or high. Six variability categories were created by patterns during the 6-month observation period. Stable categories were: always-low, always-intermediate, always-high; variable patterns were: varying between low and intermediate, intermediate and high, low and high (most-variable). Cox proportional hazard models were used to assess the association between hemoglobin variability and all-cause mortality or major adverse cardiac events (MACE). Results: The 25(th) and 75(th) hemoglobin percentiles were 10.2 and 11.5 g/dL, respectively, in 2012, vs. 11 and 12.5 g/dL in 2004. ESA doses were lower in all categories in 2012 and transfusion rates higher, particularly for always-low patients. Hemoglobin variability decreased modestly: in 2004, 6.0% were always-intermediate, vs. 9.5% in 2012. In 2012, more patients were always-high and fewer were most-variable. Mortality hazard ratios (HRs) were higher for patients with any low hemoglobin: always-low (HR, 95% CI: 2.07, 1.84 – 2.31), varying between low and intermediate (1.37, 1.29 – 1.45), and most-variable (1.23, 1.16 – 1.31); the pattern was similar for MACE. Conclusions: In 2012 vs. 2004, hemoglobin levels decreased, the range of levels narrowed, and variability decreased modestly; transfusions increased. The highest risk of mortality and MACE appeared to occur in patients with persistently low, rather than highly variable, hemoglobin levels.
Dustri-Verlag Dr. Karl Feistle 2017-11 2017-09-07 /pmc/articles/PMC5653974/ /pubmed/28899480 http://dx.doi.org/10.5414/CN109031 Text en © Dustri-Verlag Dr. K. Feistle http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Gilbertson, David T. Hu, Yan Peng, Yi Maroni, Bradley J. Wetmore, James B. Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study |
title | Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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title_full | Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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title_fullStr | Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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title_full_unstemmed | Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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title_short | Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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title_sort | variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study
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topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653974/ https://www.ncbi.nlm.nih.gov/pubmed/28899480 http://dx.doi.org/10.5414/CN109031 |
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