Multiply the number of QRS complexes by six, and the exact heart rate is 54 bpm. There is one P wave for each QRS complex, thus the atrial rate is the same. Enlarge . Example #2.

Because the electrical activation originates at or near the AV node, the P wave is frequently not seen; it can be buried within the QRS complex, slightly before the QRS complex or slightly after ...

A P wave occurs before each QRS complex (+); therefore, this is A sensing V pacing or P-wave synchronous ventricular pacing. The P waves are positive in leads I, II, aVF, and V4-V6, This is a ...

There is a P wave before each of the first QRS complexes (+) with a stable PR interval (0.16 sec). The P wave is positive in leads I, II, aVF, and V4-V6. Therefore, this is a normal sinus complex.

Surface ECGs show a P wave preceding each QRS complex, although at rapid heart rates, the P wave may be obscured by the T wave. The remaining supraventricular tachycardias are much less common.

It's a type of arrhythmia, meaning the heart rhythm isn't happening in the normal way. Idioventricular rhythm may be seen ...

TIP A good quick preliminary screen of an ECG should involve rate, rhythm and axis – in this ECG the rate is around 75bpm, the rhythm is sinus (there are regular p waves and every p wave is followed ...

P wave: This shows contraction of the heart’s atria, which refers to the two upper chambers. QRS complex: This shows electrical activity running through the heart to the ventricles, which are ...