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.
In terms of specific arrhythmias, sinus tachycardia is the most frequently seen arrhythmia, with supraventricular. tachycardia being the next most common, followed by sinus bradycardia (Hanash, 2010). Reentrant tachycardia is. common in infants and children with congenital heart disease (CHD). Some arrhythmias in the early post operative period like premature atrial contractionâs (PACâs) and premature ventricular beats (bigeminy) are usually transient and well tolerated. Others like junctional ectopic tachycardia (J ET) a nd atrial flutter may cause significant