1. Inhibition of the Na pump—a mechanism in the genesis of cardiac arrhythmias

   • H. G. Glitsch

   Editorial Pages: 611 - 619

2. Alterations in the heart sarcolemmal Ca²⁺ transport activity by some β-adrenergic antagonists

   • A. Dzurba
   • P. K. Ganguly
   • N. S. Dhalla

   Original Contributions Pages: 620 - 626

3. Chronic recording from the His bundle of the awake dog

   • J. L. Atlee III
   • Anne M. Dayer
   • J. C. Houge

   OriginalPaper Pages: 627 - 638

4. Different determination of sinoatrial conduction time (SACT) in man

   • K. -O. Bischoff
   • P. Bucher
   • W. Hager

   OriginalPaper Pages: 639 - 648

5. Nonhomogeneous electrophysiological changes and the bimodal distribution of early ventricular arrhythmias during acute coronary artery occlusion

   • Th. Horacek
   • M. Neumann
   • W. Meesmann

   OriginalPaper Pages: 649 - 667

6. The possible role of phospholipase A₂ in cardiac membrane destabilization under calcium overload conditions

   • M. E. Saxon
   • A. K. Filippov
   • U. I. Porotikov

   OriginalPaper Pages: 668 - 678

7. Arrhythmogenic dose of acetylstrophanthidin unchanged by beta-sympathomimetics in conscious dogs

   • M. Haass
   • G. Sponer
   • U. Abshagen

   OriginalPaper Pages: 679 - 689

8. The influence of cardiac cholinergic activation on the induction and maintenace of ventricular fibrillation

   • G. Amitzur
   • M. Manoach
   • Marta Weinstock

   OriginalPaper Pages: 690 - 697

9. Erratum

   Erratum Pages: 698 - 698