Browsing by Subject "Hemorragia"

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    Cessation of oral anticoagulation is an important risk factor for stroke and mortality in atrial fibrillation patients
    (2017) Rivera Caravaca, José Miguel; Roldán Schilling, Vanessa; Esteve Pastor, María Asunción; Valdés Chávarri, Mariano; Vicente García, Vicente; Lip, Gregory YH; Marín Ortuño, Francisco; Enfermería
    Oral anticoagulation (OAC) is highly effective preventing stroke and mortality in AF, but withdrawal is common in the elderly, when high bleeding risk and when are difficulties achieving an optimal time in therapeutic range (TTR). We analysed the rate of OAC cessation, predisposing factors to cessation and the relation to clinical outcomes in a large ‘real world’ cohort of AF patients over a long follow-up period. Consecutive non-valvular AF outpatients clinically stables for six months were recruited. Rates of cardiovascular events, major bleeding and mortality were recorded and related to OAC cessation. We included 1361 patients (48.7 % male; aged 76, IQR 71–81), followed-up for a median of 6.5 years. During follow-up, 244 patients suffered thrombotic events, 250 suffered from major bleeding and 551 patients died. 10 % of patients stopped OAC. After OAC withdrawal, there were 36 thromboembolic events (22 strokes), 10 major bleedings and 75 deaths. OAC cessation was independently associated with adverse cardiovascular events (HR 1.45; 95 % CI 1.01–2.08), stroke/TIA (HR 1.85; 1.17–2.94) and all-cause mortality (HR 1.30; 1.02–1.67). Independent predictors of OAC cessation were age 80 (HR 2.29; 1.60–3.29), previous coronary artery disease (HR 0.32; 0.15–0.71), major bleeding (HR 5.00; 3.49–7.15), heart failure (HR 2.38; 1.26-4.47), cancer (HR 5.24; 3.25–8.44) and renal impairment developed during follow-up (HR 2.70; 1.26–5.75). In conclusion, in non-valvular AF patients, cessation of OAC was independently associated with the risk of stroke, adverse cardiovascular events and mortality. Bleeding events and some variables associated with higher bleeding risk are responsible for OAC cessation.
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    Refining stroke and bleeding prediction in atrial fibrillation by adding consecutive biomarkers to clinical risk scores
    (2019) Rivera Caravaca, José Miguel; Marín Ortuño, Francisco; Vílchez Aguilera, Juan Antonio; Gálvez, Josefa; Esteve-Pastor, María Asunción; Vicente García, Vicente; Lip, Gregory YH; Roldán Schilling, Vanessa; Enfermería
    Background and Purpose: Current European guidelines for the management of atrial fibrillation suggest using biomarkers to refine the risk stratification process. However, it is unclear whether ≥2 biomarkers incrementally improve risk prediction beyond 1 biomarker alone. We investigated whether the predictive performance of CHA2DS2-VASc and HASBLED scores could be enhanced by incrementally adding consecutive different biomarkers in real-world atrial fibrillation patients taking vitamin K antagonists therapy. Methods: We included 940 atrial fibrillation patients stable on vitamin K antagonists (international normalized ratio, 2.0–3.0) for at least the previous 6 months. At inclusion, VWF (von Willebrand factor), high-sensitivity troponin T, NTproBNP (N-terminal pro-B-type natriuretic peptide), high-sensitivity IL (interleukin)-6, fibrin monomers, and BTP (β-trace protein) concentrations were quantified. During follow-up, all adverse events were recorded, and biomarkers were added to CHA2DS2-VASc and HAS-BLED scores depending on the C index. Results: During 6.5 (4.3–7.9) years, there were 98 ischemic strokes (1.60% per year) and 172 major bleeds (1.60% per year). After the addition of biomarkers, the predictive performance of CHA2DS2-VASc was not significantly increased, although the model with 3 biomarkers (ie, NT-proBNP+BTP+VWF) showed a low gain in sensitivity (integrated discrimination improvement, 2.70%; P<0.001). The predictive performance of HAS-BLED was enhanced in all biomarker-based models, with the best prediction shown by the model with 3 biomarkers (ie, VWF+NT-proBNP+high-sensitivity IL-6; C index, 0.600 [95% CI, 0.561–0.625] versus 0.639 [95% CI, 0.607–0.669]; P=0.025). This model also confirmed an increased sensitivity (integrated discrimination improvement, 5.20%; P<0.001) and positive reclassification (net reclassification improvement, 19.20%; P=0.020). Conclusions: By adding consecutive biomarkers, the predictive ability of CHA2DS2-VASc for ischemic stroke was not increased, whereas the predictive ability of HAS-BLED for major bleeding was only slightly enhanced. The net benefit and clinical usefulness of the biomarker-based models were marginal in comparison to the original scores based on clinical factors.