Key result
Chronic beta-blocker treatment was associated with significantly longer action potential duration (213 vs 176 ms) and effective refractory period (233 vs 184 ms) in human atrial cells.
Why the study?
Does chronic beta-blocker treatment alter human atrial cell electrophysiology in patients in sinus rhythm?
Cross-Sectional (n=40)
Does chronic beta-blocker treatment alter human atrial cell electrophysiology in patients in sinus rhythm?
Absolute Event Rate: 213% vs 176%
p-value: p=<0.05
Chronic beta-blockade is associated with prolonged action potential duration and effective refractory period in human atrial cells, suggesting pharmacological remodeling that may contribute to its anti-arrhythmic effects.
No takes yet. Share an insight, caveat, or question.
May support anti-arrhythmic effects via atrial remodeling; hypothesis-generating and requires prospective clinical validation.
Antony J. Workman (2003) conducted a cross-sectional in Sinus rhythm (n=40). Chronic beta-blocker treatment vs. Non-beta-blocked patients was evaluated on Action potential duration (APD90) (p=<0.05). Chronic beta-blocker treatment was associated with significantly longer action potential duration (213 vs 176 ms) and effective refractory period (233 vs 184 ms) in human atrial cells.
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