Growth of the pulmonary anulus and pulmonary arteries after the Waterston anastomosis

O. Alfieri, E. H. Blackstone, L. Parenzan

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26 Patients with tetralogy of Fallot underwent angiocardiography before a Waterston shunt and again several years later, prior to complete repair (mean interval 40 ± 15.6 [SD] months). The ratio between the diameter of the pulmonary valve anulus (PVA) and that of the descending thoracic aorta (Ao) increased by 0.32 ± 0.233, significantly more than is reported to occur after a Blalock-Taussig anastomosis (p = 0.0001). This increase had some relation to the interval between the two angiographic studies (r = 0.34, p = 0.08) and to the mean pressure in the main pulmonary artery (MPA) at the time of the second study (r = 0.35, p = 0.08). The ratio of diameter of the right (RPA) and left pulmonary arteries (LPA) and that of the Ao also increased by 0.24 ± 0.226 and 0.20 ± 0.201, respectively. These data suggest that an initial large aortopulmonary shunt may result in less need for transannular patching at complete repair.

Original languageEnglish
Pages (from-to)440-444
Number of pages5
JournalJournal of Thoracic and Cardiovascular Surgery
Issue number3
Publication statusPublished - 1979

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Surgery


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