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Coronary sinus anatomy: Ajmer Working Group Classification.

R K Gokhroo1, Devendra Singh Bisht, Deepak Padmanabhan

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Summary

A new classification system for coronary sinus (CS) anatomy aids in predicting successful left ventricular (LV) lead placement. This anatomical classification guides cardiologists for improved procedural outcomes.

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Anatomy

Background:

  • Coronary sinus (CS) anatomy is crucial for successful left ventricular (LV) lead implantation and procedural success.
  • Understanding CS variations is essential for guiding cardiologists during procedures.

Purpose of the Study:

  • To classify coronary sinus anatomy based on size, branching patterns, and posterolateral vein (PLV) location.
  • To develop a working classification system for CS to aid in LV lead placement.
  • To predict potential challenges during CS cannulation and LV lead implantation.

Main Methods:

  • Analysis of levophase angiograms from 100 patients undergoing coronary angiography.
  • Classification of CS anatomy based on predetermined parameters including size, branching, and PLV location.
  • Categorization of venograms into three groups (Type I, II, III) based on ease of PLV cannulation for LV lead placement.

Main Results:

  • A novel anatomical classification of the coronary sinus was developed.
  • Findings were divided into three groups (Type I, II, III) indicating varying ease of posterolateral vein cannulation.
  • The classification aims to predict and mitigate procedural bottlenecks.

Conclusions:

  • A new anatomical working classification for the coronary sinus is proposed.
  • This classification system is intended to improve the success rate of LV lead placement.
  • The study aims to enhance operative success through better anatomical understanding and guidance.