Key result
Long-coupled premature ventricular contractions demonstrated greater left ventricular dyssynchrony compared to rapid ventricular pacing (P<0.0001), whereas PVC location had minimal impact.
Why the study?
Does PVC coupling interval and location impact left ventricular dyssynchrony and global function in healthy canines?
Does PVC coupling interval and location impact left ventricular dyssynchrony and global function in healthy canines?
p-value: p=<0.0001
Late-coupled PVCs cause more pronounced left ventricular dyssynchrony than short-coupled PVCs, suggesting they may be more likely to induce cardiomyopathy if dyssynchrony is the primary mechanism.
No takes yet. Share an insight, caveat, or question.
Long-coupled PVCs may heighten cardiomyopathy risk via dyssynchrony; animal data leaves open human translation and mechanism.
Potfay et al. (2015) studied Premature ventricular contractions (n=7). Premature pacing (pentageminal PVCs at coupling intervals of 200 to 375 ms) vs. Rapid ventricular pacing at 400 ms and short-coupled PVCs was evaluated on Left ventricular dyssynchrony (dispersion of QRS-to-peak strain) (p=<0.0001). Long-coupled premature ventricular contractions demonstrated greater left ventricular dyssynchrony compared to rapid ventricular pacing (P<0.0001), whereas PVC location had minimal impact.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: