Key result
Anatomically derived P waves and PsÊ-loops closely resemble in vivo recordings in amplitude and contour.
A computational derivation of P waves from atrial contours closely matches actual pre-mortem ECG recordings, supporting the radial spread of depolarization from the SA node.
Hypothesis-generating for atrial activation models; leaves open clinical translation pending prospective validation.
The P wave and PsÊ-loop were derived from coplanar outlines of the contour of seven human atria, including left atrial enlargement, in which it was assumed that the process of depolarization spread in a radial fashion from the sinoatrial node. The "derived" planar projections of the P waves of the standard leads and PsÊ-loops were similar in relative amplitude and general contour to those recorded electrocardiographically and vectorcardiographically prior to death.
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Abildskov et al. (1955) studied Left atrial enlargement (n=7). Anatomical derivation of P wave and PsÊ-loop vs. In vivo electrocardiographic and vectorcardiographic recordings prior to death was evaluated on Similarity of derived planar projections to in vivo recordings. Anatomical derivation of P waves and PsÊ-loops from seven human atria produced projections similar in relative amplitude and general contour to in vivo recordings prior to death.
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