Learn More
BACKGROUND AND PURPOSE Embolism is believed to be the major cause of stroke in patients with nonvalvular atrial fibrillation (NVAF). The detection of asymptomatic embolic signals (ES) in individuals with NVAF might allow identification of patients at high risk of stroke and monitoring of therapy in individual subjects. We determined the frequency of(More)
Platelet activation is associated with acute vessel occlusion and chronic restenosis after percutaneous transluminal coronary angioplasty (PTCA). Organic nitrates, which act by releasing the vasodilator and anti-platelet agent nitric oxide (NO), have a predominantly vasodilator action and cause hypotension at doses required to inhibit platelet activation.(More)
50 normotensive subjects (22 controls with no cardiac disease, 24 patients with coronary heart-disease, and 4 with early cardiomyopathy) were investigated with gated cardiac blood-pool scintigraphy before and during cold pressor stimulation. The controls had no change or a significant rise (p less than 0.005) in left ventricular ejection fraction and(More)
OBJECTIVE To create a risk model for predicting major adverse complicating events of percutaneous transluminal coronary angioplasty (PTCA), and to test the accuracy of the model on a prospective cohort of patients SETTING Tertiary cardiac centre METHODS Available software can predict probabilities of events using Bayes's theorem. To establish the(More)
11 preconditioned projection methods. Both inner iterations and searches for acceptible columns are amenable to parallel methods. Subspace selection algorithms to be used with the nonlinear projection methods in solving systems of nonlinear equations, Comp.1) T was highly erratic (sudden jumps in the residual which sometimes caused overrow problems in both(More)
  • 1