Method for antegrade/retrograde conduction discrimination using a standard atrial bipolar lead
| Autor: | Richard S. Schallhorn, Harry Herscovici |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
medicine.medical_specialty
Signal Electrocardiography Dogs Heart Conduction System Internal medicine mental disorders medicine Animals Heart Atria Lead (electronics) Intracardiac Electrogram Bipolar lead business.industry P wave Signal Processing Computer-Assisted General Medicine Pacemaker mediated tachycardia Thermal conduction medicine.anatomical_structure cardiovascular system Cardiology Right atrium Cardiology and Cardiovascular Medicine business Algorithms |
| Zdroj: | Pacing and clinical electrophysiology : PACE. 10(5) |
| ISSN: | 0147-8389 |
| Popis: | Significant differences between morphology, magnitude, and relative timing of antegrade and retrograde conduction were demonstrated on unipolar electrograms from a standard atrial bipolar J lead positioned in the right atrium in dogs. The morphology of the P wave sensed from the tip was more or less biphasic while the morphology of the P wave sensed from the ring was monophasic only and of lower frequency content. The unipolar-ring P wave was attenuated in retrograde as compared with the antegrade. During retrograde conduction the unipolar-ring signal returned to baseline earlier in time relative to the peak of the unipolar-tip signal, than it did during antegrade conduction. Based on these differences a sensing circuit capable of discriminating between antegrade and retrograde conduction was built. This discriminator circuit, which relies on a standard lead and simple electronics, functioned reliably in trials in dogs and thus may prove to be practical for use in future pacemakers. |
| Databáze: | OpenAIRE |
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