Dr. Robert I. White Jr.'s research interests include clinical investigation of the new diagnostic and therapeutic methods for treating vascular malformations. Among patients with congenital vascular malformations, there exists an uncommon autosomal dominant type referred to as Osler-Weber-Rendu Syndrome or more properly Hereditary Hemorrhagic Telangiectasia (HHT). The clinical manifestations of this disorder are due to direct artery-to-vein connections referred to as arteriovenous malformation which occur in nose, brain, lung and boweland to lead to abnormal bleeding and other physiological consequences. Dr. White's group is concluding a number of ongoing collaborative projects with the gastrointestinal and pulmonary sections of medicine, and the Department of Neurology, Neurosurgery and Otolaryngology.We are embarking on a new area of study: reproduciability and efficacy of exercise oximetry in assessing children and adults with pulmonary arteriovenous malformations. Our first paper appeared in Pediatric Cariology 2009. online version available in pub med.