Natural history and noninvasive of diagnosis of subpulmonic ventricular septal defect

  • Atsuyoshi Takao
  • Kazuo Momma
  • Kan Tohyama
  • Yoko Sawada
  • Kazuhiro Mori


Studies made on surgical as well as on autopsy cases of ventricular septal defect (VSD) at our Institute have indicated that after the (peri)membranous type of VSD, subpulmonic VSD (SPVSD; subarterial infundibular) is the most frequent type of VSD, in contrast to the frequency reported in the Caucasian series. The purpose of this presentation is to review the natural history of SPVSD based on cases experienced at the Heart Institute, Tokyo Women’s Medical College, and to discuss the specific features of various noninvasive diagnostic procedures identifying the subpulmonic location of VSD. The first part deals with the natural history. The natural history of SPVSD is unique in the following three aspects [1–3]: First, the aortic valve may prolapse into the SPVSD, resulting in aortic regurgitation [4–11]; second, aneurysm of the sinus of Valsalva may develop in association with the defect [11–13]; third, spontaneous closure rarely occurs.


Aortic Valve Aortic Regurgitation Ventricular Septal Defect Ventricular Septal Defect Aortic Insufficiency 
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Copyright information

© Springer Japan 1986

Authors and Affiliations

  • Atsuyoshi Takao
    • 1
  • Kazuo Momma
  • Kan Tohyama
  • Yoko Sawada
  • Kazuhiro Mori
  1. 1.The Heart Institute of JapanTokyo Women’s Medical CollegeTokyoJapan

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