An adult pt; What arrhythmias do they develop?

  1. Note the O2 sat in the SVC, as soon as it reaches the RA it is high- This can only be due to a left to right shunt- an ASD
  2. Atrial septal defect (ASD) is the most prevalent congenital cardiac anomaly in adults, accounting for ~35% of all congenital heart defects. Late presentation is due to the insidious development of right ventricular remodeling, with enlargement of right cardiac chambers.
  3. With advancing age, symptoms such as exercise intolerance, dyspnea, fatigue, and atrial arrhythmias (with or without palpitations) become more common; 90% of untreated patients experience these symptoms, or may show evidence of heart failure, by the age of 40 years
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