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Investigations in primum defect

Authoring team

  • chest radiography reveals cardiomegaly, large pulmonary arteries and pulmonary plethora
  • electrocardiography shows left axis deviation and right bundle branch block. There is left axis deviation in ostium primum ASD because the pathology involves the A - V valves.
  • catheterisation allow determiation of the size of the ASD and the degree of valvular incompetence

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