Abstract
To the Editor: With great interest, we have read the article of Fan and colleagues1 on the effects of biatrial pacing in the prevention of postoperative atrial fibrillation after coronary artery bypass surgery. By measuring P-wave duration from 12-lead surface ECGs and calculating P-wave dispersion, they found that biatrial pacing resulted in a more significant reduction in P-wave dispersion when compared with single-site atrial pacing. Although these results are interesting, we believe that they should be considered cautiously because of the limited accuracy of electrocardiographic measurements performed manually on paper-printed ECGs obtained at a standard signal size and paper speed. Our research group has introduced P-wave dispersion as a simple …
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