BackgroundHigh admission blood glucose (ABG) level has been associated with a poor short-term outcome among non-diabetic patients with heart failure (HF). We aimed to investigate the association between ABG levels and long-term (10 years) mortality in patients with or without pre-existing diabetes mellitus (DM) admitted with HF.MethodsWe analyzed data on 1811 patients with DM and 2182 patients without pre-existing DM who were hospitalized with HF during a prospective national survey. The relationship between ABG and 10-year mortality was assessed using the Cox proportional hazard model adjusting for multiple variables. ABG was analyzed both as a categorical (<110, 110–140, 140–200, and >200 mg/dL) and as a continuous variable.ResultsAt 10 years of follow-up the cumulative probability of mortality was 85 and 78% among patients with DM and patients with no pre-existing DM (p < 0.001), respectively. Among patients with no pre-existing DM, glucose levels of 110–140, 140–200 and ≥200 mg/dL were associated with 9% (p = 0.140), 16% (p = 0.031) and 53% (p < 0.001) increased mortality risk compared to ABG < 110 mg/dL. Each 18-mg/dL (1-mmol/L) increase in glucose level was associated with a 5% increased risk of mortality (p < 0.001) among patients with no-pre-existing DM. In contrast, among patients with DM, only those with glucose levels >200 mg/dL had an increased mortality risk (>200 mg/dL versus <110 mg/dL; HR = 1.20, p = 0.032).ConclusionAmong hospitalized HF patients with no pre-existing DM there is a linear relationship between ABG level and long-term mortality, whereas among patients with DM only ABG level >200 mg/dL is associated with increased mortality risk.
The new oral anticoagulants (NOACs) reduce stroke and systemic embolism in patients with non-valvular atrial fibrillation (AF), but dabigatran may increase risk of coronary ischemic events for unclear reasons. Thus, this study assessed the effects of dabigatran and rivaroxaban on platelet reactivity and inflammatory markers in patients with non-valvular AF. Patients with non-valvular AF planned to begin treatment with NOACs were included. Seventeen patients were prescribed dabigatran and ten rivaroxaban. Platelet function (as assessed by multiple-electrode aggregometry, Impact-R shear-induced platelet deposition, P-selectin expression and plasma RANTES levels) and high-sensitivity C-reactive protein (hs-CRP) were measured at enrollment (prior to initiation of NOAC treatment) and at least 7 days into treatment with either dabigratran or rivaroxaban. Seventeen patients treated with dabigatran (mean age 69 ± 7 years, 35 % women, mean CHADS2 score 2.6 ± 1.2), and ten patients treated with rivaroxaban (mean age 73 ± 9 years, 20 % women, mean CHADS2 score 2.7 ± 1.6) completed the study. In both groups, there were no significant differences in platelet reactivity between the baseline and on-anticoagulant treatment time-points, as measured by each of the platelet-specific assays. There was a trend towards increased platelet reactivity in response to arachidonic acid from baseline to on-treatment in both groups, probably as a result of aspirin discontinuation in 33 % of patients. No significant differences were noted between baseline and on-treatment in hs-CRP in both anticoagulant groups. Treatment with dabigatran and rivaroxaban does not appear to be associated with changes in markers of platelet reactivity or systemic inflammation.
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