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Effects of statin treatment on cardiac function in patients with chronic heart failure: a meta-analysis of randomized
Lei Zhang1, Shuning Zhang, Hong Jiang
1Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, 180 Fenglin Road, Shanghai, China.
Insights
Statin treatment significantly improves cardiac function and reduces ventricular remodeling in patients with chronic heart failure (CHF). This meta-analysis confirms statins
Area of Science:
- Cardiology
- Pharmacology
Background:
- The efficacy of statin therapy in patients with chronic heart failure (CHF) is not definitively established.
- Investigating the potential benefits of statins on cardiac function and ventricular remodeling in CHF patients is crucial.
Purpose of the Study:
- To evaluate the impact of statin treatment on cardiac function and ventricular remodeling in patients with chronic heart failure (CHF).
- To synthesize evidence from randomized controlled trials (RCTs) to determine the overall effect of statins in CHF.
Main Methods:
- A systematic literature search was conducted across PubMed, MEDLINE, EMBASE, and EBM Reviews for relevant RCTs.
- Data extraction and quality assessment were performed independently by two reviewers.
- Pooled analysis using random-effects models was employed to calculate weighted mean differences (WMD) and 95% confidence intervals (CI).
Main Results:
- Eleven trials involving 590 patients were analyzed.
- Statin treatment significantly increased left ventricular ejection fraction (WMD: 3.35%).
- Statins also led to significant reductions in left ventricular end-diastolic diameter, left ventricular end-systolic diameter, B-type natriuretic peptide levels, and New York Heart Association functional class.
Conclusions:
- Current evidence suggests that statin therapy offers significant benefits for patients with chronic heart failure (CHF).
- Statin use is associated with improved cardiac function, enhanced clinical symptoms, and amelioration of left ventricular remodeling in CHF patients.
Background:
Whether additional benefit can be achieved with the use of statin treatment in patients with chronic heart failure (CHF) remains undetermined.
Hypothesis:
Statin treatment may be effective in improving cardiac function and ameliorating ventricular remodeling in CHF patients.
Methods:
The PubMed, MEDLINE, EMBASE, and EBM Reviews databases were searched for randomized controlled trials comparing statin treatment with nonstatin treatment in patients with CHF. Two reviews independently assessed studies and extracted data. Weighted mean differences (WMD) with 95% confidence intervals (CI) were calculated using random effects models.
Results:
Eleven trials with 590 patients were included. Pooled analysis showed that statin treatment was associated with a significant increase in left ventricular ejection fraction (WMD: 3.35%, 95% CI: 0.80 to 5.91%, P = 0.01). The beneficial effects of statin treatment were also demonstrated by the reduction of left ventricular end-diastolic diameter (WMD: -3.77 mm, 95% CI: -6.24 to -1.31 mm, P = 0.003), left ventricular end-systolic diameter (WMD: -3.57 mm, 95% CI: -6.37 to -0.76 mm, P = 0.01), B-type natriuretic peptide (WMD: -83.17 pg/mL, 95% CI: -121.29 to -45.05 pg/mL, P < 0.0001), and New York Heart Association functional class (WMD: -0.30, 95% CI: -0.37 to -0.23, P < 0.00001). Meta-regression showed a statistically significant association between left ventricular ejection fraction improvement and follow-up duration (P = 0.03).
Conclusions:
The current cumulative evidence suggests that use of statin treatment in CHF patients may result in the improvement of cardiac function and clinical symptoms, as well as the amelioration of left ventricular remodeling.
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