Jan 29, 2022 · 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.

Nov 1, 2024 · 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)

Oct 8, 2024 · 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

Biatrial abnormality implies that the ECG indicates both left and right atrial enlargement; i.e a large P-wave in lead II and a large biphasic P-wave in lead V1. This article explains clinical characteristics and ECG changes in left and right atrial enlargement / hypertrophy. Mechanisms and causes are also discussed.

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.

In cardiology, the P wave on an electrocardiogram (ECG) represents atrial depolarization, which results in atrial contraction, or atrial systole. The P wave is a summation wave generated by the depolarization front as it transits the atria.

Feb 15, 2021 · The P wave on an ECG trace is indicative of atrial depolarisation, which may be initiated by the sinoatrial node or by an ectopic atrial focus. The P wave is directed inferiorly and therefore should be positive in leads I and II. It is often biphasic in lead V1.

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

Oct 8, 2024 · Left atrial enlargement (LAE) is due to pressure or volume overload of the left atrium. LAE is often a precursor to atrial fibrillation. Also known as: Left Atrial Enlargement (LAE), Left atrial hypertrophy (LAH), left atrial abnormality. ECG Criteria for Left Atrial Enlargement.

ECG interpretation requires knowledge of these waves and intervals. 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 …