#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
  supertype:  septal_defect  a congenital abnormality in the septum between the left and right sides of the heart
  part of:  tetralogy_of_Fallot__Fallot's_tetralogy__Fallot's_syndrome  a congenital heart defect producing cyanosis; characterized by four symptoms: pulmonary stenosis and ventricular septal defect and malposition of the aorta over both ventricles and hypertrophy of the right ventricle

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