Clinical cardiology
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Contraction-excitation feedback, that is, electrophysiologic changes that are caused or preceded by mechanical changes of the myocardium, has been extensively studied in the ventricles. The role of contraction-excitation feedback in the atria, and more particularly in the genesis and maintenance of atrial fibrillation, has been less adequately investigated. ⋯ In patients with lone atrial fibrillation, modest increases in atrial pressure may facilitate the induction of atrial fibrillation.
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Clinical cardiology · May 1997
Cannulation of the coronary sinus via the femoral vein--a new technique.
Cannulation of the coronary sinus usually has been accomplished by advancing a catheter through the sub-clavian or internal jugular veins. ⋯ Analysis of the results showed evidence of a learning curve with improvement of time with an increasing number of patients. The method provides a safe and inexpensive solution for catheterization of the coronary sinus, easily accessible to every catheter laboratory.