Key result
Increasing paced heart rates and early ectopics approaching the atrial effective refractory period led to a small increase in atrial conduction time.
Observational (n=20)
In healthy males, atrial conduction time increases with higher paced heart rates and when early ectopics approach the atrial effective refractory period.
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Minimal conduction slowing with faster rates/ectopics occurs in healthy atria; leaves open relevance to arrhythmia risk in patients.
Brorson et al. (1977) conducted an observational in Healthy (n=20). Increasing paced heart rates was evaluated on Atrial conduction time (ACT). Increasing paced heart rates and early ectopics approaching the atrial effective refractory period led to a small increase in atrial conduction time.
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