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- Holme, Ingar, et al.
(författare)
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Congestive heart failure is associated with lipoprotein components in statin-treated patients with coronary heart disease Insights from the Incremental Decrease in End points Through Aggressive Lipid Lowering Trial (IDEAL)
- 2009
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Ingår i: ATHEROSCLEROSIS. - : Elsevier BV. - 0021-9150. ; 205:2, s. 522-527
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Tidskriftsartikel (refereegranskat)abstract
- Background: Very few, if any, studies have assessed the ability of apolipoproteins to predict new-onset of congestive heart failure (HF) in statin-treated patients with coronary heart disease (CHD). Aims: To employ the Incremental Decrease in End points Through Aggressive Lipid Lowering Trial (IDEAL) study database to assess the association of on-treatment lipoprotein components with prediction of HF events and to compare their predictive value with that of established risk factors such as hypertension and diabetes. Methods: We used Cox regression models to study the relationships between on-treatment levels of apolipoproteins A1 and B to subsequent HE Chi square information value from the log likelihood was used to compare the predictive value of lipoprotein components with established risk factors of HF. Findings: In the IDEAL study, on-treatment apolipoproteins proved to be associated with the occurrence of new-onset HE Variables related to low-density lipoprotein cholesterol (LDL-C) carried less predictive information than those related to high-density lipoprotein cholesterol (HDL-C), and apoA-1 was the single variable most strongly associated with HF. LDL-C was less predictive than both non-HDL-C (total cholesterol minus HDL-C) and apoB. The ratio of apoB to apoA-1 was most strongly related to HF after adjustment for potential confounders, among which diabetes had a stronger correlation with HF than did hypertension. ApoB/apoA-1 carried approximately 2.2 times more of the statistical information value than that of diabetes. Calculation of the net reclassification improvement index revealed that about 3.7% of the patients had to be reclassified into more correct categories of risk once apoB/apoA-1 was added to the adjustment factors. The reduction in risk by intensive lipid-lowering treatment as compared to usual-dose simvastatin was well predicted by the difference in apoB/apoA-1 on-treatment levels. Interpretation: The on-treatment ratio of apoB/apoA-1 was the strongest predictor of HF in CHD patients of both IDEAL treatment arms combined, mostly driven by the strong association with apoA-1, whereas LDL-C and non-HDL-C were less able to predict HF outcome. The predictive information value contained within apoB/apoA-1 was about 2.2 times more than that of diabetes. Between-treatment group differences in HF were to a significant extent explained by on-treatment differences in apoB/apoA-1, mostly through the changes in apoB. We argue therefore, on-treatment lipoprotein components contribute to the overall future risk of HF in statin-treated patients with CHD.
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| 2. |
- Strandberg, Timo E, et al.
(författare)
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Comparative Effect of Atorvastatin (80 mg) Versus Simvastatin (20 to 40 mg) in Preventing Hospitalizations for Heart Failure in Patients With Previous Myocardial Infarction
- 2009
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Ingår i: AMERICAN JOURNAL OF CARDIOLOGY. - : Elsevier BV. - 0002-9149. ; 103:10, s. 1381-1385
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Tidskriftsartikel (refereegranskat)abstract
- We investigated whether intensive cholesterol lowering could more effectively prevent heart failure (HF) in secondary prevention. The IDEAL study was a 4.8-year prospective, randomized trial comparing "usual" simvastatin treatment (20 to 40 mg/day, n = 4,449) with high-dose atorvastatin (80 mg/day, n = 4,439) in patients with a history of myocardial infarction (MI). At baseline, 94% of patients (n = 8,351) had no history of HF. During the course of the trial, there were 222 new or recurrent hospitalizations for HF (57 and 165 in those with and without HF at baseline, respectively), 123 (2.8%) in the simvastatin group and 99 (2.2%) in the atorvastatin group (hazard ratio [HR] 0.81, 95% confidence interval [CI] 0.62 to 1.05, p = 0.11). After adjustments, atorvastatin 80 mg was associated with a 26% decrease of new HF events compared with simvastatin 20 to 40 mg (HR 0.74, 95% CI 0.57 to 0.97, p = 0.03). Atorvastatin tended to be associated with fewer HF events in those with HF at baseline (n = 537, HR 0.65, 95% CI 0.38 to 1.11, p = 0.11) and those without HF at baseline (n = 8,351, HR 0.80, 95% CI 0.59 to 1.09, p = 0.15). Also, HF without preceding MI (n = 187) was decreased (HR 0.73, 95% CI 0.54 to 0.97, p = 0.03). In conclusion, atorvastatin 80 mg was more efficient than simvastatin 20 to 40 mg in preventing development of HF in patients with previous MI.
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