Marcelo C Shibata

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AIMS Large randomized trials have shown that beta-blockers reduce mortality and hospital admissions in patients with heart failure. The effects of beta-blockers in elderly patients with a broad range of left ventricular ejection fraction are uncertain. The SENIORS study was performed to assess effects of the beta-blocker, nebivolol, in patients >/=70 years,(More)
OBJECTIVE To synthesise the literature on the effects of fish oil-docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA)-on mortality and arrhythmias and to explore dose response and formulation effects. DESIGN Systematic review and meta-analysis. DATA SOURCES Medline, Embase, the Cochrane Library, PubMed, CINAHL, IPA, Web of Science, Scopus,(More)
AIMS Heart failure (HF) in the elderly carries a poor prognosis. We used the SENIORS dataset of elderly HF patients aged ≥70 years in order to develop a risk model for this population. METHODS AND RESULTS The SENIORS trial evaluated the effects of nebivolol and enrolled 2128 patients ≥70 years with HF (ejection fraction ≤35%, or recent HF admission). We(More)
Heart failure is a common condition that carries a high burden of mortality and morbidity. Several randomised trials have evaluated the effects of beta blockers in heart failure. This paper gives a systematic overview of published randomised trials of beta blockers in heart failure using standard methods. In all, 22 randomised controlled trials were(More)
BACKGROUND Atrial fibrillation and heart failure often coexist, causing substantial cardiovascular morbidity and mortality. β blockers are indicated in patients with symptomatic heart failure with reduced ejection fraction; however, the efficacy of these drugs in patients with concomitant atrial fibrillation is uncertain. We therefore meta-analysed(More)
OBJECTIVE Metformin has had a 'black box' contraindication in diabetic patients with heart failure (HF), but many believe it to be the treatment of choice in this setting. Therefore, we attempted to conduct a pilot study to evaluate the feasibility of undertaking a large randomized controlled trial with clinical endpoints. STUDY DESIGN The pilot study was(More)
BACKGROUND Congestive heart failure (CHF) is associated with high morbidity and mortality; however, there is little contemporary Canadian data to quantify the burden of this illness. OBJECTIVE To report the impact of CHF in Canada, as measured by hospitalizations. METHODS Data were obtained from the Canadian Institute for Health Information on patients(More)
BACKGROUND Trials evaluating angiotensin-receptor blockers in heart failure (HF) have shown inconsistent results. OBJECTIVE To evaluate the effect of angiotensin II (AII) receptor blockers in HF patients on total mortality and HF hospitalisations. METHODS Systematic search of the literature through MEDLINE (1980-2007) and abstracts of major(More)
Calcium channel blockers (CCBs) are widely used to control hypertension. Previous work suggested that their use could increase heart failure (HF), which is 1 of the consequences of uncontrolled hypertension. Information about the effect of CCBs on incident HF in patients with hypertension is scarce. A systematic review was conducted to evaluate patients(More)
BACKGROUND Information about long term outcomes of patients with acute coronary syndromes (ACS) who have clinically diagnosed heart failure is scarce. METHODS In a UK registry, this study evaluated patients with non-ST elevation ACS, recording treatment, and clinical outcomes for six months. In a subgroup, a four year mortality follow up was performed to(More)