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Applied Anatomy: Width of Sinuses

  • The wider the sinus the more room there is to manipulate a catheter towards the coronary ostium.
  • A narrow sinus would require a very acute angle for the catheter to be pointing towards the ostia for a non-selective coronary angiogram.
  • The wider the sinus the more room there is to manipulate a catheter towards the coronary ostium.
  • A narrow sinus would require a very acute angle for the catheter to be pointing towards the ostia for a non-selective coronary angiogram.
  • A JR 4 can be used to engage left coronary in case of narrow sinus. And AR2 can be used to reach right coronary through valve frame in case of a wider sinus.
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