These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Cardioprotective effect of β-adrenoceptor blockade in patients with breast cancer undergoing chemotherapy: follow-up study of heart failure.
    Author: Seicean S, Seicean A, Alan N, Plana JC, Budd GT, Marwick TH.
    Journal: Circ Heart Fail; 2013 May; 6(3):420-6. PubMed ID: 23425978.
    Abstract:
    BACKGROUND: Chemotherapy with trastuzumab and anthracycline is associated with incident heart failure (HF) in patients with breast cancer. We hypothesized that continuous incidental use of β-blocker agents (BB) was protective against HF in patients without established structural heart disease who were receiving trastuzumab and anthracycline. METHODS AND RESULTS: We identified 920 consecutive patients with breast cancer (age 52.3±11.0 years) with normal ejection fraction before receiving trastuzumab and anthracycline therapy at our institution between 2005 and 2010. Using a propensity score and a greedy 5 to 1 digit-matching algorithm, 106 of these patients on continuous BB during cancer treatment were matched with 212 patients from the same pool with similar characteristics but not on continuous BB. During a median follow-up of 3.2±2.0 years, 32 incident HF admissions were identified in these 318 patients with breast cancer, whereas 28 cancer-related (noncardiac) deaths occurred before any incident HF. Cumulative incidence regression models and cause-specific hazards of new HF events were estimated from competing risk Cox models of time-dependent covariates. Although trastuzumab therapy showed significant association with incident HF, independent of anthracycline-related cardiotoxicity (hazard ratio, 9.0; 95% confidence interval, 3.0-27.0; P<0.0001), continuous use of BB was associated with lower risk of new HF events (hazard ratio, 0.2; 95% confidence interval, 0.1-0.5; P=0.003). CONCLUSIONS: Coincidental, continuous use of BB is associated with lower incidence of HF in patients with breast cancer and normal baseline ejection fraction in a competing risk framework, and after matching for demographics, clinical, and cancer-related treatment characteristics. Prospective randomized clinical trials to validate these findings are warranted.
    [Abstract] [Full Text] [Related] [New Search]