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  • Title: Coenzyme Q10 as an adjunctive in the treatment of chronic congestive heart failure. The Q10 Study Group.
    Author: Hofman-Bang C, Rehnqvist N, Swedberg K, Wiklund I, Aström H.
    Journal: J Card Fail; 1995 Mar; 1(2):101-7. PubMed ID: 9420639.
    Abstract:
    Seventy-nine patients with stable chronic congestive heart failure were randomized into a double-blind, crossover placebo controlled study with 3-month treatment periods, where either 100 mg coenzyme Q10 (CoQ10) or placebo was added to conventional therapy. Mean patient age was 61 +/- 10 years, ejection fraction at rest was 22% +/- 10%, and maximal exercise tolerance was 91 +/- 30 W. The follow-up examinations included ejection fraction (primary objective), exercise test, and quality of life questions. Ejection fraction at rest, during a slight volume load, and during a submaximal supine exercise increased slightly compared with placebo: 24% +/- 12% versus 23% +/- 12% (NS), 25% +/- 13% versus 23% +/- 12% (P < .05), and 23% +/- 11% versus 22% +/- 11% (NS). Maximal exercise capacity increased from 94 +/- 31 W during the placebo period to 100 +/- 34 W during the CoQ10 period (P < .05). Total score for the quality of life assessment increased significantly from 107 +/- 23 during the placebo period to 113 +/- 22 during the CoQ10 period (P < .05). The results indicate that oral long-term treatment with 100 mg CoQ10 in patients with congestive heart failure only slightly improves maximal exercise capacity and the quality of life and that the clinical importance of this needs to be further evaluated.
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