What does it mean by aberrant conduction?

Abstract. Aberrant ventricular conduction is a common electrocardiographic (EKG) manifestation that occurs when the supraventricular electrical impulse is conducted abnormally through the ventricular conducting system. This results in a wide QRS complex that may be confused with a ventricular ectopic beat.

What causes aberrant conduction?

Aberrant conduction occurs simply because the right and left bundle branches have different lengths of refractory periods. In Figure 2, the shaded area is the refractory period of the left and right bundle branches. As can be seen, one bundle branch, usually the right, has a longer refractory period than the other.

What does aberrant mean in cardiology?

Aberration occurs when the electrical activation of the heart, which is caused by a series of action potentials is conducting improperly, which can be due to: left anterior fascicular block. left posterior fascicular block. bundle branch block.

What does AFIB with Aberrancy mean?

Overview. Atrial fibrillation in the presence of either bundle branch block or pre-excitation (accessory pathway) will result in an irregular wide complex tachycardia that may be mistaken for polymorphic VT. It is important to carefully check the ECG for the typical highly irregular rhythm of atrial fibrilation.

Is aberrant conduction normal?

This is a frequent finding among healthy individuals and in those with heart disease. If such aberration occurs at normal heart rate (<100 beats/min) it is most likely to have a right bundle branch block morphology.

What’s the difference between V tach and SVT?

Because VTs occur in the large pumping chambers of the heart, they make the heart extremely inefficient and are more serious than SVTs. The symptoms of VTs are usually more severe, and have a much greater tendency to be fatal.

When does an aberrant conduction EKG take place?

Contraction ( APC ) deforming it and the aberrantly conducted QRS complex is seen. ECG 2. Rate dependent aberration. In the upper tracing, it is clearly seen that aberration occurs when heart rate increases. QRS complexes reappear.

What causes aberrant conduction in the ventricular system?

Figure 1 shows a premature atrial beat causing aberrant ventricular conduction. A premature atrial beat is simply an extra (unexpected) beat discharged by an ectopic focus in the atria. The impulse from the premature beat reaches the His-Purkinje system early, while some fibers are still refractory.

What does premature atrial complexes with aberrant conduction mean?

Premature atrial contractions can be conducted to the ventricles normally, blocked at the AV node, or conduct aberrantly (i.e., abnormal QRS morphology). Accordingly, what does premature atrial complexes mean? Atrial premature complexes (APCs) are a common kind of heart arrhythmia characterized by premature heartbeats originating in the atria.

Is the supraventricular extrasystole conducted with aberration?

The figure shows a supraventricular extrasystole (i.e a premature atrial complex/beat) which is conducted with aberration. The supraventricular impulse reaches the His-Purkinje system while the right bundle branch is still refractory and therefore blocks the impulse.

What does it mean by aberrant conduction? Abstract. Aberrant ventricular conduction is a common electrocardiographic (EKG) manifestation that occurs when the supraventricular electrical impulse is conducted abnormally through the ventricular conducting system. This results in a wide QRS complex that may be confused with a ventricular ectopic beat. What causes aberrant conduction? Aberrant conduction occurs…