2022年1月29日 · The presence of tall, peaked P waves in lead II is a sign of right atrial enlargement, usually due to pulmonary hypertension (e.g. cor pulmonale from chronic respiratory disease). P-wave inversion in the inferior leads indicates a non-sinus origin of the P waves.

2024年10月8日 · Right atrial enlargement produces a peaked P wave (P pulmonale) with amplitude: > 2.5 mm in the inferior leads (II, III and AVF) > 1.5 mm in V1 and V2; Also known as: Right Atrial Enlargement (RAE), Right atrial hypertrophy (RAH), right atrial abnormality

2024年11月1日 · P-mitrale: Double-humped P-wave with a peak-to-peak interval of >30 ms and total duration >120 ms. Causes include: Left atrial hypertrophy, dilation, or acute rise in left atrial pressure. Intraatrial conduction delay. Tall P-wave may represent left atrial enlargement in up to 30% of cases (pseudo-P-pulmonale). (O'Keefe 2021)

Left atrial enlargement is also referred to as P mitrale, and right atrial enlargement is often referred to as P pulmonale. The reasons for this are explained below. The normal P-wave (Figure 1, upper panel) is typically smooth, symmetric and positive. The P-wave in lead II may, however, be slightly asymmetric by having two humps.

The P wave is the first deflection of the cardiac cycle seen on an EKG. It represents the electrical activity associated with atrial depolarization. The normal P wave is a low amplitude, vertical, rounded wave, resembling a gentle hill, which is continued immediately from the QRS complex.

It represents the electrical depolarization of the atria of the heart. It is typically a small positive deflection from the isoelectric baseline that occurs just before the QRS complex. It can sometimes have abnormalities in morphology or timing that can …

Peaked P waves (> 0.25 mV) suggest right atrial enlargement, cor pulmonale, (P pulmonale rhythm), [1] but have a low predictive value (~20%). [2] A P wave with increased amplitude can indicate hypokalemia. [3] It can also indicate right atrial enlargement. [4] A P wave with decreased amplitude can indicate hyperkalemia. [5] P-wave changes in ...

ECG interpretation traditionally starts with an assessment of the P-wave. The P-wave reflects atrial depolarization (activation). The PR interval is the distance between the onset of the P-wave to the onset of the QRS complex. The PR interval is assessed in order to determine whether impulse conduction from the atria to the ventricles is normal.

The simultaneous polarization is reflected in a P wave that is peaked and narrower than usual (Figure 1). The peak in the P wave is the result of the increased amount of depolarized tissue. Although depolarization is prolonged in an enlarged right atrium, the P wave appears narrower because depolarization of the right

Visually, the ‘peak’ method seems to have correctly identified the P-peaks, Q-peaks, S-peaks and T-peaks for this signal, at least, for the first few complexes. Well done, peak! However, it can be quite tiring to be zooming in to each complex and inspect them one by one.