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Related Concept Videos

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Related Experiment Video

Updated: Sep 4, 2025

Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging
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Retrograde carbon dioxide coronary sinus venography.

Yousaku Okubo1, Shogo Miyamoto1, Sho Okamura1

  • 1Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.

Pacing and Clinical Electrophysiology : PACE
|July 21, 2022
PubMed
Summary

Carbon dioxide coronary sinus angiography offers a safe alternative for patients with severe contrast allergies or kidney issues undergoing cardiac resynchronization therapy. This technique successfully guided lead placement without adverse events.

Keywords:
carbon dioxide angiographycardiac resynchronization therapycontrast allergycoronary sinus angiography

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Cardiology

Background:

  • Coronary sinus (CS) angiography is crucial for guiding left ventricular (LV) lead placement during cardiac resynchronization therapy (CRT).
  • Standard contrast media poses risks, including contrast-induced nephropathy (CIN) and allergic reactions, particularly in patients with severe renal dysfunction or contrast allergy.
  • Alternative imaging modalities are needed to mitigate these risks in vulnerable patient populations.

Observation:

  • Two case reports detail the use of carbon dioxide (CO2) angiography for CS visualization in patients with contraindications to standard contrast agents.
  • CO2 angiography was successfully employed to guide the precise positioning of LV leads during CRT implantation procedures.
  • No adverse events related to CO2 use or contrast media were reported in these cases.

Findings:

  • Carbon dioxide coronary sinus angiography provides adequate visualization for LV lead placement in CRT.
  • This technique is a safe and effective alternative for patients at high risk from iodinated contrast media.
  • Successful CRT implantation was achieved using CO2 angiography in patients with severe contrast allergy and renal dysfunction.

Implications:

  • Carbon dioxide angiography represents a significant advancement in interventional cardiology, expanding procedural options for high-risk patients.
  • It enhances the safety profile of CRT implantation by eliminating the risks associated with traditional contrast agents.
  • This approach may become a standard of care for selected patients requiring CS imaging, improving patient outcomes and reducing healthcare complications.