MedPage Today -- Percutaneous aortic valve replacement frequently causes cerebral lesions, although typically without functional or neurologic consequences, researchers found. New lesions appeared on brain MRI in at least 80% of patients treated with either brand of percutaneous device developed for this procedure but in only 48% of those who got the traditional open heart valve surgery, according to Philipp Kahlert, MD, of University Duisburg-Essen and the West German Heart Center in Essen, Germany, and colleagues.
