Abstract
In general, patients with congenital cyanotic heart disease are sensitive to infectious endocarditis. In the event that a bacteremia occurs in a patient with a circulatory shunt, bacteria in the venous circulatory system are allowed to pass directly to the brain without going through the normal pulmonary circulation having a filtering capability and may cause a brain abscess. The patient in this case was a female at the age of 9 years and 7 months with congenital cyanotic heart disease (single ventricle, coarctation of aorta, mitoral stenosis and atrial septal defect). A brain abscess developed after the tooth extraction but was successfully treated through drainage and administration of antibiotic through neurosurgery. The brain abscess in this patient. was considered to have been caused by bacteria that might have been reached the brain through her right-to-left shunt from the forcus in the oral cavity after tooth extraction. As an intraoral lesion in children with congenital cyanotic heart disease may directly cause a focal infection, antibiotic prophylaxis and subsequent careful observation are recomended especially for invasive treatment.
