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Association of serum lipid levels over time with survival in incident peritoneal dialysis patients

Authors
 Cheol Ho Park  ;  Ea Wha Kang  ;  Jung Tak Park  ;  Seung Hyeok Han  ;  Tae-Hyun Yoo  ;  Shin-Wook Kang  ;  Tae Ik Chang 
Citation
 JOURNAL OF CLINICAL LIPIDOLOGY, Vol.11(4) : 945-954.e3, 2017 
Journal Title
 JOURNAL OF CLINICAL LIPIDOLOGY 
ISSN
 1933-2874 
Issue Date
2017
MeSH
Aged ; Cardiovascular Diseases/blood* ; Cardiovascular Diseases/mortality* ; Cohort Studies ; Female ; Humans ; Lipids/blood* ; Male ; Middle Aged ; Peritoneal Dialysis* ; Proportional Hazards Models ; Risk Assessment ; Time Factors
Keywords
High-density lipoprotein cholesterol ; Lipids ; Low-density lipoprotein cholesterol ; Mortality ; Peritoneal dialysis ; Total cholesterol ; Triglyceride
Abstract
BACKGROUND: The association of dyslipidemia with mortality has not been fully evaluated in patients on peritoneal dialysis (PD). Moreover, changes in lipids levels over time and associated death risk have not yet been studied in this population. OBJECTIVE: We studied the association of time-updated serum lipid concentrations with all-cause and cardiovascular (CV) mortalities in a 10-year cohort of 749 incident PD patients. METHODS: Association was assessed using time-varying Cox proportional hazard regression models with adjustment for multiple variables including statin therapy. RESULTS: During a median follow-up of 36 (interquartile range, 21-61) months, 273 all-cause and 107 CV deaths occurred. Compared with those with total cholesterol (TC) of 180 to <210 or low-density lipoprotein cholesterol (LDL-C) of 100 to <130 mg/dL, hazard ratios (95% confidence interval) of the lowest TC (<150 mg/dL) and LDL-C (<70 mg/dL) were 2.32 (1.61-3.35) and 2.02 (1.45-2.83) for all-cause mortality and 1.87 (1.04-3.37) and 1.92 (1.13-3.26) for CV mortality, respectively. Lower triglyceride (<100 mg/dL) and high-density lipoprotein cholesterol (<30 mg/dL) levels were associated with higher all-cause mortality (1.66 [1.11-2.47] and 1.57 [1.08-2.29]) but not with CV mortality. CONCLUSIONS: Contrary to the general population, lower TC and LDL-C levels over time were significantly associated with both worse survival and increased CV mortality in incident PD patients. Although lower triglyceride and high-density lipoprotein cholesterol concentrations were associated with significantly higher all-cause mortality, they failed to show any clear association with CV mortality. The underlying mechanisms responsible for this apparent paradox await further investigations.
Full Text
https://www.sciencedirect.com/science/article/pii/S1933287417303483
DOI
10.1016/j.jacl.2017.06.004
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실) > 1. Journal Papers
Yonsei Authors
Park, Cheol Ho(박철호) ORCID logo https://orcid.org/0000-0003-4636-5745
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/166901
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