We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
What Range of Programmable AV Delays is Necessary in Antibradycardia DDD Stimulation?
- Authors
von Knorre, Georg H.; Ismer, Bruno; Voss, Wolfgang; Petzsch, Michael; Pulya, Kamesh
- Abstract
DDD pacemakers differ considerably in device specific extents of AV delay (AVD) programmability. To demonstrate the requirements of a mean DDD pacemaker patient population optimal AVDs in 200 DDD pacemaker patients (age 8 to 91 years) were estimated by left atrial electrography. The results should help to define an AVD programmability standard. Left atrial electrograms were recorded via a bipolar filtered esophageal lead. The method aims on adjusting the left atrial electrogram to 70 ms prior to the ventricular spike, both during VDD and DDD operation of the pacemaker. In atrial sensed stimulation the optimal A VD varied from 40 to 205 ms (100.5 ± 24.5 ms) and in atrial paced stimulation from 85 to 245 ms (169.1 ±24.5 ms). The difference of the mean values is statistically significant (p < 0.001). The difference between both values in the individual patient, the individual AVD correction time, varied from 0 to 170 ms (68.7 ±26.6 ms). Thus, from our findings requirements on AV delay programmability standard can be derived: AVDs (1) should have a range from 40 to 250 ms. (2) should be independently programmable during atrial sensed and atrial paced operation, and (3) should provide as nominal settings 100 ms for atrial sensed and 170 ms for atrial paced stimulation.
- Subjects
CARDIAC pacemakers; IMPLANTED cardiovascular instruments; NEURAL stimulation; ELECTRONOGRAPHY; ELECTROOPTICAL photography; PHOTOTYPESETTING
- Publication
Pacing & Clinical Electrophysiology, 1998, Vol 21, Issue 1, p264
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/j.1540-8159.1998.tb01101.x