Acquired Atrioventricular Block: Should the Revised ACC/AHA Guidelines for Pacemaker Implantation be Revised?

The last few years have generated relatively little new knowledge in conduction system disease. Consequently, this discussion of acquired AV block focuses mostly on the shortcomings and inconsistencies of the revised 1998 ACC/AHA guidelines for implantation of pacemakers [1]. We believe that some of the recommendations in the guidelines need clari~cation to better re_ect current and changing clinical practice.