Why the study?
Is there a correlation between interatrial block and P terminal force on electrocardiograms of unselected hospital patients?
Is there a correlation between interatrial block and P terminal force on electrocardiograms of unselected hospital patients?
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Interatrial block and P terminal force are strongly correlated in unselected hospital patients, highlighting the high prevalence of this under-recognized ECG abnormality.
Interatrial block (IAB; P duration >or=110 ms) is a common electrocardiogram abnormality, which in addition to reduced left atrial function predicts atrial fibrillation and other arrhythmias. P terminal force (Ptf) +/- biphasic P in lead V(1)>or= the area of one small square on the grid also indicates left atrial abnormality, particularly left atrial enlargement, which is a strong correlate of IAB. Among 482 consecutively recorded electrocardiograms, IAB and Ptf were strongly and significantly correlated (chi(2)= 68.041; P <or= 0.001).In conclusion, interatrial block exists in pandemic proportions in unselected hospital patients. Because of its pathologic implications it requires widespread attention which, heretofore, has been lacking.
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Spodick et al. (2009) studied this question.
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