Article Text

other Versions

Download PDFPDF
Case report
Republished: Manual reduction of a radial artery loop under direct fluoroscopic visualization
  1. Evan Luther1,
  2. Eric Huang1,
  3. Hunter King2,
  4. Michael Silva1,
  5. Joshua Burks1,
  6. Aria Jamshidi1,
  7. Eric C Peterson1
  1. 1Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
  2. 2Department of Neurological Surgery, Drexel University, Philadelphia, Pennsylvania, USA
  1. Correspondence to Dr Evan Luther, Department of Neurological Surgery, University of Miami School of Medicine, miami, Florida, USA; evan.luther{at}


Transradial access has become increasingly used in neurointerventions because it reduces access site complications. However, radial artery anomalies can be difficult to navigate, often necessitating conversion to femoral access. We describe the case of a female patient in her early 70 s who underwent preoperative embolization of a carotid body tumor via right transradial access. Her radial angiogram demonstrated the presence of a radial artery loop which was successfully navigated with a triaxial system but would not spontaneously reduce even after the guide catheter was advanced into the subclavian artery. However, manual manipulation of the catheters in the antecubital fossa under direct fluoroscopic visualization reduced the loop allowing the procedure to continue transradially. Although a majority of radial loops can be traversed and reduced using standard techniques, this case demonstrates that manual reduction can be successful when other measures fail. We recommend attempting this method before converting the access site.

  • technique
  • navigation
  • intervention
  • guidewire
  • angiography

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Republishing Republished with permission from BMJ Case Reports. Published 28 September 2021; doi:10.1136/bcr-2021-017665

  • Contributors All authors contributed significantly to the development of this manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.