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 ...

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 ...

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 ...

A ventricular pacing stimulus occurs before each QRS complex (+). Prior to the ventricular paced complex there is a P wave; hence the mode of pacing is atrial-sensed ventricular-paced, or P-wave ...

There is no associated P wave, although an independent normal P ... sinus depolarization would suppress it 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm ...