Open AccessSingle‐lead VDDpacing: Excellence or expedience?
Author(s) -
Katritsis Demosthenes,
Camm A. John
Publication year - 1991
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960141112
Subject(s) - medicine , lead (geology) , excellence , cardiology , chronotropic , intensive care medicine , heart rate , blood pressure , geomorphology , political science , law , geology
Abstract The interest in VDD pacemakers has been renewed by the introduction of single‐pass leads, and continuing modifications and technical developments promise significant improvement. However, convincing long‐term data confirming the reliability and the use of newer leads are not yet available. Compared with VVIR pacemakers VDD pacing has theoretical advantages over the VVIR mode, offering better hemodynamic and endocrine responses. However, its range of indications is narrow and rate adaptation is essential when sinus node chronotropic inadequacy is present or likely to occur. In addition, on certain occasions a VDD pacemaker may not maintain persistent atrial‐synchronous pacing, thus necessitating the use of a DDD unit.