Therefore, the criteria for diagnosing LAE on a 12-lead ECG is as follows: The length of the P wave in lead II is greater than 120 milliseconds OR The downward deflection of the P wave in lead V1 ...

Because the electrical activation originates at or near the AV node, the P wave is frequently not seen; it can be buried within the QRS complex, slightly before the QRS complex or slightly after ...

Multiple other ECG traits have also emerged as potential predictors of stroke, namely cardiac electrical/structural remodeling – Q wave, QRS/QT duration, bundle blocks, P wave duration/amplitude ...

5,6 It is possible that such cases of SCD could be avoided using electrocardiogram (ECG) for early detection of prolonged P-wave duration in these individuals, allowing for relevant intervention ...

Martin A. Alpert, MD, FCCP; Boyd E. Terry, MD; Charles R. Hamm, MD; T. Michael Fan, MD, PhD; Michael V. Cohen, MD; Clara V. Massey, MD; and Jack A. Painter, MD ...