Key result
Frontal plane vectorcardiography QRS patterns correlate with RV overload severity.
Why the study?
The usefulness of vectorcardiography for assessing the severity of right ventricular overloading in atrial septal defect of secundum type was unclear.
Observational (n=31)
QRS frontal patterns correlate with RV/LV work ratios in secundum ASD; leaves open vectorcardiography's role in hemodynamic assessment.
The Frank lead vectorcardiograms of 31 catheterized cases of atrial septal defect of secundum type were reviewed and the results were correlated with the hemodynamic observations. Although no definite relationship was demonstrated between the vectorcardiographic measurements and the hemodynamic data, there was a significant correlation between the QRS patterns in the frontal plane and the right/left ventricular work ratios. The vectorcardiograms were thought to be of some value for assessment of the severity of right ventricular overloading in atrial septal defect.
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Murata et al. (1968) conducted an observational in Atrial septal defect of secundum type (n=31). Vectorcardiography was evaluated on Correlation between vectorcardiographic measurements and hemodynamic data. Vectorcardiography QRS patterns in the frontal plane demonstrated a significant correlation with right/left ventricular work ratios for assessing right ventricular overloading severity.
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