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The Relationship of Initial Transferrin Saturation to Cardiovascular Parameters and Outcomes in Patients Initiating Dialysis

Authors
 Hyang Mo Koo  ;  Chan Ho Kim  ;  Fa Mee Doh  ;  Mi Jung Lee  ;  Eun Jin Kim  ;  Jae Hyun Han  ;  Ji Suk Han  ;  Hyung Jung Oh  ;  Jung Tak Park  ;  Seung Hyeok Han  ;  Tae-Hyun Yoo  ;  Shin-Wook Kang 
Citation
 PLoS One, Vol.9(2) : e87231, 2014 
Journal Title
 PLoS One 
ISSN
 1932-6203 
Issue Date
2014
Abstract
BACKGROUND: The prognostic importance of anemia for cardiovascular (CV) events and mortality has been extensively investigated. However, little is known about the impact of transferrin saturation (TSAT), a marker reflecting the availability of iron for erythropoiesis, on clinical outcome in dialysis patients. METHODS: A total of 879 anemic incident dialysis patients were recruited from the Clinical Research Center for End-Stage Renal Disease in Korea and were divided into 3 groups according to baseline TSAT of ≤20%, 20-40%, and >40%. RESULTS: There were no differences in hemoglobin levels and the proportion of patients on erythropoiesis-stimulating agents or iron supplements among the 3 groups. During a mean follow-up duration of 19.3 months, 51 (5.8%) patients died. CV composite (11.71 vs. 5.55 events/100 patient-years, P = 0.001) and all-cause mortality rates (5.38 vs. 2.31 events/100 patient-years, P = 0.016) were significantly higher in patients with TSAT ≤20% compared to those with TSAT 20-40% (reference group). Cox regression analysis revealed that patients with TSAT ≤20% had 1.62- and 2.19-fold higher risks for CV composite outcome (P = 0.046) and all-cause mortality (P = 0.030). Moreover, TSAT ≤20% was significantly associated with left ventricular hypertrophy [odds ratio (OR)  = 1.46], high-sensitivity C-reactive protein ≥3 mg/dL (OR = 2.09), N-terminal pro B-type natriuretic peptide ≥10000 pg/mL (OR  = 2.04), and troponin-T≥0.1 ng/mL (OR  = 2.02), on logistic regression analysis. CONCLUSIONS: Low TSAT was a significant independent risk factor for adverse clinical outcome in incident dialysis patients with anemia, which may be partly attributed to cardiac dysfunction and inflammation.
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DOI
10.1371/journal.pone.0087231
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
강신욱(Kang, Shin Wook) ORCID logo https://orcid.org/0000-0002-5677-4756
구향모(Koo, Hyang Mo)
김은진(Kim, Eun Jin)
김찬호(Kim, Chan Ho)
도화미(Doh, Fa Mee) ORCID logo https://orcid.org/0000-0002-4780-6728
박정탁(Park, Jung Tak) ORCID logo https://orcid.org/0000-0002-2325-8982
오형중(Oh, Hyung Jung)
유태현(Yoo, Tae Hyun) ORCID logo https://orcid.org/0000-0002-9183-4507
이미정(Lee, Mi Jung)
한승혁(Han, Seung Hyeok) ORCID logo https://orcid.org/0000-0001-7923-5635
한재현(Han, Jae Hyun)
한지숙(Hahn, Jee Sook)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/98227
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