Useful tips

What is an aberrant ventricular conduction?

What is an aberrant ventricular conduction?

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 when the length of the cardiac cycle is changed without a compensatory change in the length of the refractory period. This is explained by the changes of the refractoriness in the His-Purkinje system related to changes in the RR interval.

Is aberrant conduction bad?

The short answer is yes, but it can be very difficult, and even experienced clinicians can misdiagnose VT as SVT with aberrancy! This can lead to clinical misadventure.

Why do aberrant PACS occur?

The QRSs are wider than and different from other QRSs, raising a possibility of PVC. But they are clearly preceded by a prematurely occurring P wave and so are PAC with aberrant conduction. Aberrant conduction occurs simply because the right and left bundle branches have different lengths of refractory periods.

What are two examples of aberrant conduction?

1) Atrial fibrillation( AF): Figure 2; 2) Atrial tachycardia; 3) Premature Atrial Contractions. In this case aberration occurs when a short cycle follows a long one. Aberration follows a long- short sequence during AF. The last 2 complex are aberrant with LBBB pattern: Gouaux-Ashman phenomenon or Ashman phenomenon.

What is the meaning of Aberrancy?

: the quality or state of being aberrant : deviation from what is known, usual, or expected Sleep is a sophisticated behavior, just like walking and thinking, with its own set of age-related norms and plenty of room for idiosyncrasy, aberrancy and downright criminal behavior.—

What is the definition of aberrant ventricular conduction?

Aberrant ventricular conduction definition: It is a term applied to alterations in QRS contour of supraventricular beats resulting from impulse transmition during periods of physiologic refractoriness and/or depressed conductivity. The supraventricular electrical impulse is conducted abnormally through the ventricular conducting system.

How are aberrantly conducted beats different from premature beats?

Aberrantly conducted beats display typical bundle branch block morphology, which premature ventricular complexes do not. Aberrantly conducted beats are not followed by a full compensatory pause (discussed later), which premature ventricular beats are.

How are supraventricular beats different from sinus beats?

Supraventricular ectopics are premature narrow QRS beats resembling the sinus beats. The P waves have a different morphology compared to the sinus beats or may be absent in case of junctional ectopics. P waves of supraventricular complexes (SVPC) may not always be visible as some of them may be overlapping a T wave.

What is a QRS complex with aberrant conduction?

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.

Share this post