Why the study?
Does ventricular pacing cause asynchronous cardiac contraction and changes in ventricular shape compared to atrial pacing in anesthetized dogs?
Population
5 anesthetized mongrel dogs weighing 10 to 13 Kg
Comparison
Ventricular pacing via bipolar electrodes placed… vs Right atrial pacing via bipolar electrodes at…
Design
Preclinical
Authors
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Ventricular pacing may induce localized systolic bulge in dogs; leaves open relevance to human pacing hemodynamics.
Does ventricular pacing cause asynchronous cardiac contraction and changes in ventricular shape compared to atrial pacing in anesthetized dogs?
Ventricular pacing induces a localized systolic bulge at the stimulation site due to asynchronous contraction, potentially explaining the relative hemodynamic ineffectiveness of ventricular pacing.
UEDA et al. (1968) studied this question.
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