Elevated Triglycerides to High-Density Lipoprotein Cholesterol (TG/HDL-C) Ratio Predicts Long-Term Mortality in High-Risk Patients

2020 ◽  
Vol 29 (3) ◽  
pp. 414-421 ◽  
Author(s):  
Rohullah Sultani ◽  
David C. Tong ◽  
Matthew Peverelle ◽  
Yun Suk Lee ◽  
Arul Baradi ◽  
...  
2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
I Dykun ◽  
S Hendricks ◽  
O Babinets ◽  
F Al-Rashid ◽  
M Totzeck ◽  
...  

Abstract Background High-density lipoprotein-cholesterol (HDL-C) has anti-atherogenic, anti-inflammatory, anti-oxidative, anti-apoptotic, and vasodilatory properties. While a linear inverse relationship between HDL-C levels and all-cause mortality is established, recent observational studies suggest a U-shaped association between HDL-C and outcome. Purpose We tested the hypothesis that both low and high HDL-C levels associate with long-term mortality. Methods The present analysis is based on the longitudinal ECAD registry of consecutive patients undergoing coronary angiography at the West German Heart and Vascular Center between 2004 and 2019. HDL-C was quantified at hospital admission using standardized enzymatic methods. The incidence of death due to any cause was evaluated during follow-up. Cox regression analysis was used to determine the association of HDL-C with incident mortality, adjusting for age, sex, systolic blood pressure, low-density lipoprotein cholesterol, smoking status, and family history of premature cardiovascular disease. In addition to the analysis on HDL-C as continuous variable, the association of HDL-groups (<10th percentile, 10th-<25th percentile, 25th-<50th percentile, 50th-<75th percentile, 75th-90th percentile, and ≥90thpercentile) with incident mortality was determined using HDL-C <10th percentile as reference. Results Among 17,433 patients, mean age was 65.9±12.6 years and 70.1% were men. Mean HDL-C was 48.7±16.2 mg/dL. During a mean follow-up 3.38±2.10 years, 2,401 patients (13.8%) died. In multivariable analysis, higher HDL-C levels were independently associated with lower all-cause mortality [hazard ratio (95% confidence interval): 0.83 (0.76, 0.91) per 1 standard deviation change in HDL-C, p<0.001]. Associations between HDL-C and mortality were equally present in male [0.83 (0,74, 0.93), p=0.001] and female patients [0.85 (0.73, 1.00), p=0.0496]. Using HDL-C <10thpercentile as reference (<31mg/dl), all other HDL-C groups showed stable effect sizes below 1.0 without signs of increasing morality probability in high HDL-C groups [0.50 (0.44, 0.58), p<0.001; 0.41 (0.36, 0.46), p<0.001; 0.37 (0.32, 0.42), p<0.001; 0.36 (0.36, 0.31), p<0.001; and 0.40 (0.34, 0.47), p<0.001 for HDL-C 31–37 mg/dL, 38–45 mg/dL, 46–56 mg/dL, 57–69 mg/dL, and ≥70mg/dl, respectively]. Conclusions In a large longitudinal registry cohort of patients undergoing invasive coronary angiography, only very low HDL-C levels were associated with increased long-term mortality. We found no signs of a U-shaped association between HDL-C and prognosis. FUNDunding Acknowledgement Type of funding sources: Foundation. Main funding source(s): Iryna Dykun was supported by the German Research Foundation (DY 149/2-1)Stefanie Hendricks was supported by the Universitätsmedizin Essen Clinician Scientist Academy (UMEA)


Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Anke Nguyen ◽  
Heath Adams ◽  
Natalie Yap ◽  
Julian Gin ◽  
Andrew M Wilson

Introduction: It is well known that high density lipoprotein cholesterol is inversely correlated with the risk of coronary artery disease. However, data is limited regarding the relationship of high density lipoprotein cholesterol in the acute setting of coronary artery disease and particularly how it compares to the most well-known biomarker, cardiac troponin I. Hypothesis: We assessed the hypothesis that high density lipoprotein cholesterol could be used as an alternative marker to troponin for acute coronary syndrome (ACS) in high risk patients. Methods: We analysed 740 patients of the BRAVEHEART cohort presenting for coronary angiography at our institution between October 2009 and March 2014. Of these, 153 patients presented with ACS, including 44 with ST elevation myocardial infarction and 109 with non-ST elevation myocardial infarction, and 587 patients presented without ACS. Binary logistic regression was used to compare high density lipoprotein cholesterol and cardiac troponin I levels as predictors of ACS, independent of age, sex, cardiac risk factors and statin use. Results: Patients presenting with ACS had higher median cardiac troponin I levels (0.34 vs. 0.02 μg/L; p<0.001), higher median serum triglyceride levels (1.5 vs. 1.3 mmol/L, p<0.001) and lower median high density lipoprotein cholesterol levels (0.97 vs. 1.09 mmol/L, p<0.001) than patients without ACS. There was no difference in total cholesterol and low density lipoprotein cholesterol between the two groups. After adjusting for differences in patient variables, the strongest independent predictors of ACS were cardiac troponin I (odds ratio (OR), 1.50; 95% confidence interval (CI), 1.24-1.82; p<0.001) and high density lipoprotein cholesterol (OR, 0.12; 95% CI, 0.04-0.36; p<0.001). Conclusion: In conclusion, high density lipoprotein cholesterol was found to be an independent marker of ACS in high risk patients at our institution. Further studies on high density lipoprotein cholesterol could determine its clinical use in conjunction with troponin levels in patients presenting with ACS.


BMJ Open ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. e019041 ◽  
Author(s):  
Farshid Hajati ◽  
Evan Atlantis ◽  
Katy J L Bell ◽  
Federico Girosi

ObjectivesWe examine the extent to which the adult Australian population on lipid-lowering medications receives the level of high-density lipoprotein cholesterol (HDL-C) testing recommended by national guidelines.DataWe analysed records from 7 years (2008–2014) of the 10% publicly available sample of deidentified, individual level, linked Medicare Benefits Schedule (MBS) and Pharmaceutical Benefits Scheme (PBS) electronic databases of Australia.MethodsThe PBS data were used to identify individuals on stable prescriptions of lipid-lowering treatment. The MBS data were used to estimate the annual frequency of HDL-C testing. We developed a methodology to address the issue of ‘episode coning’ in the MBS data, which causes an undercounting of pathology tests. We used a published figure on the proportion of unreported HDL-C tests to correct for the undercounting and estimate the probability that an HDL-C test was performed. We judged appropriateness of testing frequency by comparing the HDL-C testing rate to guidelines’ recommendations of annual testing for people at high risk for cardiovascular disease.ResultsWe estimated that approximately 49% of the population on stable lipid-lowering treatment did not receive any HDL-C test in a given year. We also found that approximately 19% of the same population received two or more HDL-C tests within the year. These levels of underutilisation and overutilisation have been changing at an average rate of 2% and −4% a year, respectively, since 2009. The yearly expenditure associated with test overutilisation was approximately $A4.3 million during the study period, while the cost averted because of test underutilisation was approximately $A11.3 million a year.ConclusionsWe found that approximately half of Australians on stable lipid-lowering treatment may be having fewer HDL-C testing than recommended by national guidelines, while nearly one-fifth are having more tests than recommended.


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