Related Experiment Video

Updated: Jun 23, 2026

Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging
10:16

Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging

Published on: February 10, 2012

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Management of Chronic Total Occlusion With Heavily Calcified Distal Cap: Three-Dimensional Vascular Wall Assessment

Hidenari Matsumura1, Kenichiro Shimoji1, Hiroya Iwahori1

  • 1Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan.

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
|December 11, 2024
PubMed

Insights

Percutaneous coronary intervention for chronic total occlusions (CTO PCI) is complex. The retrograde move-the-cap technique successfully navigated heavily calcified lesions, improving CTO PCI outcomes.

Area of Science:

  • Interventional Cardiology
  • Vascular Surgery
  • Medical Devices

Background:

  • Percutaneous coronary intervention for chronic total occlusions (CTO PCI) presents significant challenges, particularly when complex calcification is involved.
  • Calcification impedes both antegrade and retrograde approaches, often predicting failure even after initial wire crossing in the retrograde strategy.

Observation:

  • Heavily calcified distal caps in CTOs frequently obstruct retrograde wire advancement, leading to procedural failure.
  • This report details two cases where the retrograde move-the-cap technique was utilized.

Findings:

  • The retrograde move-the-cap technique enabled successful reverse-controlled antegrade and retrograde tracking and dissection despite heavily calcified distal caps.
  • Precise three-dimensional vascular assessment using multiple angles and landmarks was crucial for the technique's success.

Implications:

  • The retrograde move-the-cap technique offers a novel solution for overcoming severe calcification in CTO PCI.
  • This approach may improve success rates in complex CTO PCI cases previously deemed challenging or impossible.

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