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February 1, 1969Circulation

Spatial Parameters and Shape Factors of the Normal Atrial Vectorcardiogram and Its Scalar Components

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Population

106 normal persons

Design

Cross-sectional

Authors

DBDaniel A. BrodyUniversity of California, San FranciscoJCJohn W. CoxGriffith UniversityAMAnn B. McEachranUniversity of Alabama

Discussion

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Implication

Challenges atrial component separation in normals; supports updated vectorcardiographic norms yet leaves clinical ECG revisions open.

Structured PICO

P
Population
106 normal persons
I
Intervention
Real-time computer processing of atrial electrocardiograms (digitization, noise reduction, baseline rectification, and preamplifier distortion correction)
O
Outcome
Spatial distribution and magnitudes of P, TP, and polar P vectors; length, width, and planarity of P loops; spatial P-TP angles; and Eulerian angles of P-loop normalizationsurrogate

This study establishes quantitative norms for the normal atrial vectorcardiogram and challenges the concept that normal P waves can be separated into distinct right and left atrial components.

Cite This Study

Brody et al. (1969) studied this question.

synapsesocial.com/papers/6a8bb41877493d51bfdee62dhttps://doi.org/10.1161/01.cir.39.2.229
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Analysis of the Normal and Abnormal Vectorcardiogram in Its Own Reference Frame1962 · 64 citations
  2. 2Study on Vectorcardiogram Planarity of Normal Spatial Vectorcardiogram1966 · 6 citations
  3. 3A Study on Normal Polarcardiogram by Digital Computer Analysis1976
  4. 4Studies on the Normal Polarcardiogram Using Right to Left Axis as the Polar Axis1978
  5. 5Studies of the Spatial Vectorcardiogram in Normal Man1953 · 31 citations