A new method for uncoiling knots in angiographic tubing

Z. L. Deeb, H. S. Ahn, A. E. Rosenbaum

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Techniques for uncoiling knots formed in catheters during angiography have been the subject of several previous reports. A new technique for catheter unknotting is presented, based on the use of graded flexibility guidewires. The application of this graded taper method appears particularly pertinent to uncoiling softer, narrow-caliber, adversely looped catheters. Moreover, the mechanisms of knot uncoiling in the previous reports are reassessed and their imprecisions corrected.

Original languageEnglish (US)
Pages (from-to)197-201
Number of pages5
Issue number4
StatePublished - Dec 1 1980
Externally publishedYes


  • Angiographic complications
  • Catheterization complications
  • Catheters
  • Cerebral angiography
  • Guidewires

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine


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