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Case report
Republished: Monorail microsnare retrieval of cardiac microcatheter tip embolised to the middle cerebral artery after attempted cardiac ablation procedure
  1. Michael Young1,
  2. Ryan Johnson1,
  3. Hamad Farhat2
  1. 1 Neurosurgery, Advocate Health Care, Normal, Illinois, USA
  2. 2 Neurosurgery, Advocate Christ Medical Center, Oak Lawn, Illinois, USA
  1. Correspondence to Dr Michael Young; michael.young2{at}


We present a case of a 52-year-old man with previous mitral valve replacement who presented to an outside hospital for planned cardiac ablation for atrial fibrillation. During the procedure, while advancing the microcatheter across the mitral valve, the microcatheter was sheared embolising into the right middle cerebral artery. This retained cardiac microcatheter tip was successfully retrieved with the monorail microsnare technique. The patient made a complete recovery without any neurological deficits or evidence of infarct on follow-up imaging.

  • angiography
  • catheter
  • complication
  • embolic
  • intervention

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  • Correction notice Since the online publication of this article, 'Republished' has been added to the front of the title.

  • Collaborators Deirdre Howard, PA.

  • Contributors MY, the lead author contributed to the case report write up, literature search, imaging filming and submission process for this article. RJ, the secondary author contributed to the literature search and discussion write up for this article. HF, the senior author was the neurointerventionalist involved in the procedure and provided oversight and direction in the writing of this case report.

  • 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.

  • Patient consent for publication Obtained.

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