About RB RB is an IT service centre for the Icelandic financial market covering all aspects of IT services: development, maintenance and operations of IT-systems. RB has been a long standing service provider for the Icelandic financial market. Our solutions are operated in multiple datacentres on robust infrastructure that is required for operations of mission critical financial systems.
Atrial septal defect signs and symptoms may include: 1  Shortness of breath, especially when exercising. 2  Fatigue. 3  Swelling of legs, feet or abdomen. 4  Heart palpitations or skipped beats. 5  Frequent lung infections. 6  Stroke. 7  Heart murmur, a whooshing sound that can be heard through a stethoscope.
An atrial septal defect is an abnormal opening in the wall separating the left and right upper chambers (atria) of the heart. During the normal development of the fetal heart, there is an opening in the wall (the septum) separating the left and right upper chambers of the heart.