septal defect

Noun
  1. A congenital abnormality in the septum between the left and right sides of the heart (synset 114492738)
    is a type of: congenital heart defect - a birth defect involving the heart
    subtypes:
    • atrial septal defect - an abnormal opening between the left and right atria of the heart
    • ventricular septal defect - a common congenital heart defect; an abnormal opening in the septum dividing the ventricles allows blood to pass directly from the left to the right ventricle; large openings may cause congestive heart failure

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