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Coronary sinus flow reversal in congestive heart failure detected during biventricular pacing

Sumit Verma1

  • 1Cardiac Electrophysiology, Sacred Heart Hospital, Pensacola Heart Institute, 5151 N. 9th Avenue, Pensacola, FL 32504, USA.

Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing
|November 29, 2005
PubMed

Insights

During left ventricular lead implantation, dye reflux was observed in the coronary sinus. This retrograde flow, linked to elevated right atrial pressure, may negatively impact left ventricular function.

Area of Science:

  • Cardiology
  • Medical Devices
  • Cardiac Electrophysiology

Background:

  • Left ventricular lead implantation via the coronary sinus is a standard procedure for cardiac resynchronization therapy.
  • Coronary sinus venography is used to visualize the cardiac venous anatomy and guide lead placement.

Observation:

  • A retrograde flow of contrast dye from the coronary sinus ostium towards the distal coronary sinus was observed during venography.
  • This phenomenon occurred against the normal direction of blood flow within the coronary sinus.

Findings:

  • The observed reflux was correlated with elevated right atrial pressure exceeding the pressure within the coronary sinus.
  • This pressure gradient appears to drive the retrograde flow of contrast dye.

Implications:

  • The retrograde flow may have deleterious effects on left ventricular function.
  • Understanding this phenomenon is crucial for optimizing lead implantation techniques and patient outcomes.

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