CardioVascular and Interventional Radiology

, Volume 11, Issue 3, pp 146–149

Unusual origin and course of the first septal branch of the left coronary artery: Angiographic recognition

  • Edoardo Verna
  • Mauro Santarone
  • Mauro Boscarini
  • Isabella Ghezzi
  • Sergio Repetto
Article

Abstract

The anatomical variants of the origin and course of the first septal branch (S1) of the left coronary artery system have received little attention in the literature dealing with coronary angiography. We describe here the angiographic features of the ectopic origin of S1 from epicardial branches of the left coronary artery other than the left anterior descending artery as observed in 8 cases from a series of 700 consecutive patients (1.1%). The S1 originated from the left main coronary artery in 1 case, from a diagonal branch in 4, and from an intermediate branch in 3 cases. Previous reported cases are reviewed. Because the S1 may supply up to 15% of the blood to the myocardium, the recognition of this variable origin may have clinical implications and has to be considered as a part of the complete evaluation of coronary arteriograms of patients referred for coronary artery revascularization.

Key words

Coronary artery anatomy Coronary arteriography Coronary artery disease Coronary artery surgery Axial cineagiography 

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Copyright information

© Springer-Verlag New York Inc 1988

Authors and Affiliations

  • Edoardo Verna
    • 1
  • Mauro Santarone
    • 1
  • Mauro Boscarini
    • 1
  • Isabella Ghezzi
    • 1
  • Sergio Repetto
    • 1
  1. 1.Division of CardiologyOspedale MultizonaleVareseItaly

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