Journal of the American College of Cardiology
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J. Am. Coll. Cardiol. · Feb 2010
Risk of fatal arrhythmic events in long QT syndrome patients after syncope.
The aim of this study was to identify risk factors for fatal arrhythmias in long QT syndrome (LQTS) patients presenting with syncope. ⋯ Patients with syncope during beta-blocker therapy are at high risk of life-threatening events, and implantable cardioverter-defibrillator therapy should be considered in these patients. The risk of beta-blocker failure is highest in young children and in women.
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J. Am. Coll. Cardiol. · Feb 2010
Comparative StudyProgression from paroxysmal to persistent atrial fibrillation clinical correlates and prognosis.
We investigated clinical correlates of atrial fibrillation (AF) progression and evaluated the prognosis of patients demonstrating AF progression in a large population. ⋯ A substantial number of patients progress to sustained AF within 1 year. The clinical outcome of these patients regarding hospital admissions and major adverse cardiovascular events was worse compared with patients demonstrating no AF progression. Factors known to cause atrial structural remodeling (age and underlying heart disease) were independent predictors of AF progression. The HATCH score may help to identify patients who are likely to progress to sustained forms of AF in the near future.
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J. Am. Coll. Cardiol. · Feb 2010
Randomized Controlled Trial Multicenter StudyN-terminal pro-B-type natriuretic peptide-guided, intensive patient management in addition to multidisciplinary care in chronic heart failure a 3-arm, prospective, randomized pilot study.
This study was designed to investigate whether the addition of N-terminal pro-B-type natriuretic peptide-guided, intensive patient management (BM) to multidisciplinary care (MC) improves outcome in patients following hospitalization due to heart failure (HF). ⋯ Compared with MC alone, additional BM improves clinical outcome in patients after HF hospitalization. (BNP Guided Care in Addition to Multidisciplinary Care; NCT00355017).
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J. Am. Coll. Cardiol. · Feb 2010
Randomized Controlled Trial Multicenter StudyA randomized comparison of the Endeavor zotarolimus-eluting stent versus the TAXUS paclitaxel-eluting stent in de novo native coronary lesions 12-month outcomes from the ENDEAVOR IV trial.
The ENDEAVOR IV (Randomized Comparison of Zotarolimus-Eluting and Paclitaxel-Eluting Stents in Patients with Coronary Artery Disease) trial evaluated the safety and efficacy of the zotarolimus-eluting stent (ZES) compared with the paclitaxel-eluting stent (PES). ⋯ These findings demonstrate that ZES has similar clinical safety and efficacy compared with PES in simple and medium complexity single de novo coronary lesions. (ENDEAVOR IV Clinical Trial; NCT00217269).
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J. Am. Coll. Cardiol. · Feb 2010
Evaluation of cuff-induced ischemia in the lower extremity by magnetic resonance oximetry.
The aim of this study was to evaluate vascular function in the lower extremities by making direct time-course measurement of oxygen saturation in the femoral/popliteal arteries and veins during cuff-induced reactive hyperemia with magnetic resonance imaging-based oximetry. ⋯ Post-occlusive transient changes in venous blood oxygenation might provide a new measure of vascular competence, which was found to be reduced in subjects with abnormal ABI, manifesting in prolonged recovery during the early phase of hyperemia.