| Autor: |
Hazday MS; Division of Cardiology, Orlando Regional Healthcare Systems Orlando, Florida, USA., Mendelson D, Brownlee RR |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing [J Interv Card Electrophysiol] 1998 Jun; Vol. 2 (2), pp. 171-3. |
| DOI: |
10.1023/a:1009755616342 |
| Abstrakt: |
The clinical utility of single lead, atrial synchronous, ventricular pacing (VDD), for patients with normal sinus function and heart block is well established. Atrial stimulation, unavailable in VDD systems presents a significant disadvantage. DDD pacing systems however, require the introduction and positioning of two separate leads. The acute human study discussed evaluated a modified version of a commercially available VDD lead with a preshaped lobe, capable of both sensing and pacing the right atrium. "P" waves and atrial stimulation thresholds were determined in five patients. The mean P-wave was 2.5 +/- 1 millivolts. Atrial stimulation in the unipolar configuration was 1.6 +/- 0.5 volts and 1.7 +/- 0.9 volts in the bipolar configuration. These acute stimulation thresholds and sensing amplitudes were comparable to conventional DDD pacing systems. Therefore, single-lead DDD pacing may be feasible and warrants further study. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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