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Knots in the cath lab, an embarrassing complication of radial angiography
  1. Prabha Nini Gupta,
  2. G K Praveen,
  3. Sajan Z Ahmed,
  4. B Krishna Kumar,
  5. Sajith V S
  1. Department of Cardiology, Medical College Hospital, Trivandrum, Kerala, India
  1. Correspondence to Dr Prabha Nini Gupta, Department of Cardiology, Medical College Hospital, T/C 5/2091, Near the Sri Krishna Temple, Cheruvekkal, Srikaryam, Trivandrum, Kerala 695017, India; ninigupta{at}


Most case reports or series describe knots in the venous system such as knots of Swan-Ganz catheters, pacing wires or thermodilution catheters. Knots during radial angiography are relatively rare. Here we describe a simple method of unravelling a radial knot via the femoral route, together with a review of the literature on knots in the catherisation laboratory and the techniques to deal with them.

  • Interventional Cardiology

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