Tetralogy of Fallot

  • Hiromi Kurosawa
  • Anton E. Becker


Fallot’s tetralogy is characterized by its outflow tract morphology. The pulmonary infundibular tract is narrowed due to an anteriorly displaced outlet septum, thereby contributing to a large malalignment ventricular septal defect and right ventricular override of the aortic valve [12]. The ventricular septal defect in Fallot’s tetralogy is almost always of the outlet type (Fig. 4.1) and is perimembranous in nature in approximately 75% of cases (Fig. 4.1). The degree of override of the aortic valve may vary considerably; in some instances almost all of the aortic orifice is positioned over the right ventricle.


Ventricular Septal Defect Ventricular Septum Inferior Margin Posterior Limb Conduction Axis 
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Copyright information

© Springer-Verlag Tokyo 1987

Authors and Affiliations

  • Hiromi Kurosawa
    • 1
  • Anton E. Becker
    • 2
  1. 1.Department of Pediatric Cardiovascular SurgeryThe Heart Institute of Japan, Tokyo Women’s Medical CollegeTokyoJapan
  2. 2.Department of Pathology, Academic Medical CenterUniversity of AmsterdamAmsterdamThe Netherlands

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