persistent sinus venosus

Pathology

• persistence of sinus venosus associated with atrial septal defect
• occurs in superior portion of atrial septum
• often associated with anomalous pulmonary veins
  • generally upper right pulmonary vein
  • drainage into the right atrium

Diagnostic procedures

• echocardiography
  • right ventricular volume overload
  • no ostium secundum defect
• electrocardiogram: abnormal p axis

Complications

• right ventricular hypertrophy
• right atrial enlargement
• atrial fibrillation
• pulmonary hypertension

More general terms

• atrial septal defect (ASD)

Additional terms

• sinus venosus