P-pulmonale, or right atrial abnormality, is a specific finding on an electrocardiogram (ECG) characterized by tall, peaked P waves.
Identifying P-Pulmonale on an ECG
The key feature of P-pulmonale is the appearance of the P wave. Here's what to look for:
- Shape: The P wave is pointed with a single crest.
- Amplitude (Height):
- In lead 2, the amplitude of the P wave is ≥ 2.5 mm (0.25 mV). The reference states that the amplitude (height) of the P wave in lead 2 needs to be at least 2.5mm (0.25mV) to be classified as P-pulmonale.
- For infants up to 6 months of age, a P wave height ≥ 3 mm may be considered abnormal.
In summary, P-pulmonale is identified by a big, tall, peaked P waves on ECG.
