2024年7月18日 · Paroxysmal atrial tachycardia (PAT) is a type of arrhythmia, or abnormal heartbeat. Paroxysmal means the episode of arrhythmia begins and ends abruptly. Atrial means the abnormal heart rhythm...

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.

2024年11月1日 · P-pulmonale ECG findings of a P-pulmonale pattern: Primary definition: [1] Tall, peaked P-waves in Lead II (>2.5 mm). [2] Sinus rhythm (not ectopic P-waves). The P-wave axis is generally >70 degrees (negative P-wave in aVL). Large P-waves sometimes cause diffuse ST depression (due to atrial repolarization). causes of P-pulmonale pattern:

2020年7月26日 · What Does the P Wave Represent? The P wave represents electrical activity (in volts) that causes cardiac muscle contraction in the atria – the upper two heart chambers. When a P wave definition says it represents atrial contraction, this is not entirely incorrect.

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.

2022年4月30日 · Premature ventricular contractions (PVCs) are extra heartbeats that begin in one of the heart's two lower pumping chambers (ventricles). These extra beats disrupt the regular heart rhythm, sometimes causing a sensation of a fluttering or a skipped beat in the chest.

2023年6月26日 · Heart rates are highly variable in atrial tachycardia producing a rate usually between 100-250. The rhythms of atrial tachycardias are commonly regular, but irregular variants can be seen. P wave morphology is highly variable …

2023年7月24日 · The P wave and PR segment is an integral part of an electrocardiogram (ECG). 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.

ECG interpretation usually starts with assessment of the P-wave. The P-wave is a small, positive and smooth wave. It is small because the atria make a relatively small muscle mass.