1983 Volume 139 Issue 3 Pages 239-243
AIZAWA, Y., CHOU, T., YAZAWA, Y., ODA, E., SHIBUYA, T., OZAWA, T. and SHIBATA A. Progression of Wenckebach Type A-V Block to High Degree A-V Block in Aged Man. Tohoku J. exp. Med., 1983, 139 (3), 239-243 This case report describes a 60 years old male with Wenckebach A-V block which progressed to high degree A-V block. Syncope and dizzy attacks were attributed to high degree A-V block in the study of ambulatory ECG (Holter). Wenckebach point was low; 90bpm when the right atrium was paced. At 140bpm, 2:1 A-H block with intermittent alternating and high degree A-H block were induced. Furthermore, a very wide His potential was recorded during the electrophysiological study. He received a permanent pacemaking. Since Wenckebach type A-V block is usually regarded as benign, this case seems to be rare.
