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.

2024年4月13日 · How Is PQRST Determined? You can figure out the PQRST sequence by analyzing the timing, morphology, and duration of each wave and interval on the EKG rhythm strip. Understanding the normal range for each part …

Before you can start analyzing heart rhythms, (atrial fibrillation, atrial flutter, ventricular tachycardia etc.) you must know the basics about the PQRST wave. Here is what a basic PQRST EKG strip looks like: Now let’s break each part of this strip down and …

2024年11月23日 · The PQRST wave is the fundamental component of an EKG trace and represents the sequence of electrical events in the heart during a single cardiac cycle. Understanding the PQRST wave is vital for healthcare professionals, particularly nurses, cardiologists, and emergency responders.

What is PQRST wave meaning? The PQRST wave meaning is the wave pattern on an ECG that shows the function or electrical activity of the heart. The letters represent the various components of the cardiac cycle – P wave, QRS complex, and T wave.

2021年11月1日 · The cardiac cycle is represented on an electrocardiogram (EKG) as a series of waves labeled P-QRS-T, representing electrical depolarzation through the heart.

2024年12月12日 · The PQRST wave is essential for understanding heart function through an ECG. It represents the electrical activity of the heart during a single heartbeat. Here’s what you need to know:

2009年1月4日 · QRS is the ventricular depolarisation and T wave represents ventricular repolarisation. Atrial repolarisation is called Ta wave. Ta wave is not visible because it is shallow and superimposed on the PR segment, QRS and part of the ST segment. STD: standardisation pulse, a square wave of 1 mV amplitude, giving 10 mm vertical amplitude in usual ECG.

(1) P波：代表心房肌除极的电位变化。 一般小于0.12s。 (2) PR间期：代表心房开始除极至心室开始除极的时间。 0.12～0.20s。 (3) QRS波群：代表心室肌除极的电位变化。 0.06～0.10s。 (4) ST段：代表心室缓慢复极过程。 (5) T波：代表心室快速复极时的电位变化。 (6)QT间期：代表心室肌除极和复极全过程所需的时间。 (4)代偿间歇不完全。 房性早搏连续大于3次或以上就是 房性心动过速，房性心动过速再快就是心房颤动。 所以房性早搏的特点也适用于心房颤动，不太 …

各波形的幅度和时间间隔、周期正常与否会代表一些疾病的特征，如下图所示，为pqrst各波形的幅度、时间、周期的定义： 注意：P波经常有3种形态，单波(向上或向下)、双向(半正半负)、双峰(全部正向，但有两个波峰)。