A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves; yet ...

Wandering atrial pacemaker (WAP) requires three different P wave morphologies in one ECG with a QRS complex rate of < 100. Idioventricular rhythms meet criteria for ventricular tachycardia, but ...

QRS complex: This shows electrical activity running through the heart to the ventricles, which are the two lower chambers. T wave: This shows the electrical reset of the heart in preparation for ...

The rhythm is regular at a rate of 100 beats/min. A P wave occurs before each QRS complex (+) with a stable but short PR interval (0.12 sec). The PR interval is shorter than what would be expected ...

Figure 2 shows a regular rhythm at a rate of 90 beats/min. The QRS complex duration is increased (0.14 sec), and there is a morphology of a right bundle branch block with an RSR' morphology in ...

The axis is approximately +90° (biphasic QRS complex in lead I and positive in lead aVF). The QT/QTc intervals are normal (600/425 msec). There is a P wave before each QRS complex (+) with a stable ...

TIP Think atrial flutter for any narrow complex tachycardia of around 150bpm. In atrial flutter there is a regular atrial rate of 300bpm which is too high for the AV node to conduct. The AV node ...

The QRS width is less than three small squares so is not broad or prolonged. 5 ... The distance between the P wave and the QRS complex is less than one large square (0.2 seconds). This is consistent ...