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Statin therapy in patients with diastolic heart failure
Faramarz Tehrani1, Ryan Morrissey, Anita Phan
1Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA.
Insights
Statin therapy may improve survival for patients with diastolic heart failure. This study found improved survival rates in patients taking statins, with no significant difference in hospitalization rates.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Medicine
Background:
- Controversy exists regarding statin therapy's impact on heart failure mortality.
- This study investigates statin effects on morbidity and mortality in diastolic heart failure patients.
Purpose of the Study:
- To evaluate the effect of statin therapy on hospitalization rates and mortality in patients with diastolic heart failure.
Main Methods:
- Evaluated patients with preserved left ventricular ejection fraction (> or =50%) hospitalized for heart failure symptoms.
- Compared outcomes between patients on statin therapy (group 1) and those not (group 2) over a 5-year follow-up.
- Assessed hospitalization rates and mortality.
Main Results:
- Patients on statins (n=81) showed improved survival compared to those not on statins (n=189) (HR=0.65, P=.029).
- Survival benefit persisted after adjusting for baseline characteristics, comorbidities, and medications.
- No significant difference in cardiovascular or overall hospitalization rates between the groups.
Conclusions:
- Statin therapy is associated with improved survival in patients diagnosed with diastolic heart failure.
Background:
There is controversy regarding the potential effects of statin therapy on mortality in patients with heart failure. The present study analyzed the possible effects of statin therapy on morbidity and mortality in patients with diastolic heart failure over long-term follow-up.
Hypothesis:
To evaluate potential effect of statin therapy on hospitalization rate and mortality in patients with diastolic heart failure.
Methods:
Patients with preserved left ventricular ejection fraction (> or =50%), hospitalized for clinical symptoms of heart failure were evaluated. Patients on statin therapy started at or prior to their first heart failure admission represented group 1 and patients without statin therapy represented group 2. The effects of statins on hospitalization rates and mortality were assessed during a 5 year follow-up.
Results:
A total of 270 patients (group 1 n = 81; group 2 n = 189) were followed over 5 years. Patients on statins demonstrated improved survival compared to patients without statin therapy (hazard ratio [HR] = 0.65, 95% confidence interval [CI]: 0.45-0.95, P = .029). The survival benefit was maintained after adjusting for differences in baseline characteristics, comorbidities, and other medications. There was no significant difference in the mean cardiovascular hospitalization rate (3.0 +/- 3.2 vs 3.8 +/- 4.7, P = .23) and in overall hospitalization rate (7.1 +/- 6.3 vs 7.8 +/- 7.7, P = .52) between groups 1 and 2, respectively.
Conclusion:
Statin therapy appears to be associated with improved survival in patients with diastolic heart failure.
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