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Related Experiment Videos

The coronary sinus conduit function: anatomical study (relationship to adjacent structures).

Shirley El-Maasarany1, Colin G Ferrett, Anthony Firth

  • 1Alexandria University School of Medicine, Egypt.

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|August 10, 2005
PubMed
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The mitral valve annulus (MVA) is closely related to the coronary sinus (CS) and great cardiac vein (GCV). Understanding these anatomical relationships is crucial for successful cardiac interventions involving the CS.

Area of Science:

  • Cardiovascular Anatomy
  • Cardiac Electrophysiology

Background:

  • The mitral valve annulus (MVA) is anchored to the aorta, with its postero-lateral aspect related to the coronary sinus (CS).
  • The CS and its tributaries are utilized for left ventricular pacing in heart failure.
  • Dilatation of the MVA impacts its postero-lateral structures.

Purpose of the Study:

  • To determine the anatomical relationships between the coronary sinus (CS) and adjacent cardiac structures.
  • To investigate the proximity of the CS and great cardiac vein (GCV) to the mitral valve annulus (MVA).

Main Methods:

  • Dissection of 40 adult cadaveric heart specimens.
  • Longitudinal sections of the MVA in 6 regions.
  • Measurement of CS diameter and distance from the endocardium using digital calipers.

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Main Results:

  • The great cardiac vein (GCV) forms a semicircular channel with the CS at the postero-lateral MVA.
  • The shortest distance between the CS wall and the MVA endocardium is 5.2 +/- 1.6 mm.
  • The venous channel is in direct contact with the left atrium in 37/40 hearts.

Conclusions:

  • There is intimate proximity between the coronary sinus (CS) and the mitral valve annulus (MVA).
  • The great cardiac vein (GCV) has a close relationship with the MVA and left ventricular free wall.
  • Imaging techniques assessing these relationships can aid CS cannulation for interventions.