The P wave amplitude in lead II > 2.5 mm, or; The upward deflection of the P wave in lead V1 > 1.5 mm in amplitude. Enlarge . ECG Examples: Right Atrial Enlargement (ECG Example 1) ...

If no P waves can be seen and the QRS complexes are irregularly irregular, ... If the ratio is > 4, then early repolarization is present (the ST elevation is < 25% of the T wave amplitude).

The mean atrial capture threshold was 0.82 V, while the mean P-wave amplitude was 3.58 mV, according to the researchers, who also reported that among 7% with a P-wave amplitude of <1.0 mV, no one ...

Mean P-wave amplitude was 2.97 ± 1.56 mV at pre-hospital discharge, increased to 3.3 ± 1.71 mV at 1 month, and remained stable thereafter.

A decrease in P-wave amplitude was the most common notable change in device parameters (occurred in 1% of patients) immediately after MRI. At long-term follow-up, ...