Aberrant Conduction A term of art referring to the transmission of electromechanical impulses through variant pathways. Aberrant conduction during supraventricular
Supraventricular Tachycardia
An abnormally fast heart rhythm due to improper electrical activity in the upper part of the heart.
What is aberrant conduction in ECG?
A term of art referring to the transmission of electromechanical impulses through variant pathways. Aberrant conduction during supraventricular tachycardia results in a wide-complex tachycardia, and occurs in persons of all age groups. Segen's Medical Dictionary. © 2012 Farlex, Inc.
What is aberrant conduction during supraventricular tachycardia?
Aberrant conduction during supraventricular tachycardia results in a wide-complex tachycardia, and occurs in persons of all age groups. Segen's Medical Dictionary. © 2012 Farlex, Inc.
What is aberrations in cardiac conduction?
Aberration (aberrant conduction) is conduction of the supraventricular impulse to the ventricles in a markedly different manner from the usual conduction . Aberration is seen as bundle branch block pattern (wide QRS complex).
What causes aberrant ventricular 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. Figure 1 shows a premature atrial beat causing aberrant ventricular conduction.
What does aberrant conduction mean in an ECG?
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.
How is aberrant conduction treated?
It is usually treated with vagal maneuvers or adenosine. What does aberrancy mean? You can think of “aberrancy” as abnormal conduction. When something is aberrant it “departs from the right, normal, or usual course.”
What does aberrancy 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.
What is AFIB with aberrant conduction?
Aberrancy, or aberrant conduction just means that the beats do not get conducted along the traditional conduction pathway. Atrial fibrillation with a right bundle branch block or left bundle branch blocks are good examples of atrial fibrillation with aberrancy.
What is premature atrial complexes with aberrant conduction?
Atrial premature complexes (APCs) are a common kind of heart arrhythmia characterized by premature heartbeats originating in the atria. Another name for atrial premature complexes is premature atrial contractions. One of the most common symptoms of APCs is heart palpitations or unusual awareness of your heartbeats.
What drugs should be avoided in irregular wide complex tachycardia?
It is so very critical to choose the right kind of medication once the decision is made to treat a patient with wide complex tachycardia. Calcium channel blockers (Diltiazem and verapamil) are strongly advised not to be used for fear of hemodynamic collapse, hypotension and cardiac arrest [4].
How can AFIB be treated with aberrancy?
If SVT with aberrancy, treat with IV adenosine (vagal maneuvers). For irregular WCTs, if atrial fibrillation with aberrancy, consider expert consultation; control rate. If pre-excited atrial fibrillation (AFIB + WPWS), expert consultation is advised. Avoid AV nodal blocking agents, consider amiodarone.
What is a flutter in the heart?
Atrial flutter is a type of heart rhythm disorder in which the heart's upper chambers (atria) beat too quickly. In atrial flutter, the heart's upper chambers (atria) beat too quickly. This causes the heart to beat in a fast, but usually regular, rhythm.
What does aberrant mean in medical terms?
Aberration: (1) A deviation or irregularity. For example, a chromosome aberration is a deviation from the normal chromosome number or the normal chromosome structure. In this sense, aberration is also synonymous with deflection, departure, divergence, diversion, turning.
Is AIVR regular?
Electrocardiogram characteristics of AIVR include a regular rhythm, 3 or more ventricular complexes with QRS complex > 120 milliseconds, a ventricular rate between 50 beats/min and 110 beats/min, and occasional fusion or capture beats.
What is the difference between ventricular tachycardia and supraventricular tachycardia?
Tachycardia is a very fast heart rate of more than 100 beats per minute. The many forms of tachycardia depend on where the fast heart rate begins. If it begins in the ventricles, it is called ventricular tachycardia. If it begins above the ventricles, it is called supraventricular tachycardia.
Aberrant Conduction
A term of art referring to the transmission of electromechanical impulses through variant pathways. Aberrant conduction during supraventricular tachycardia results in a wide-complex tachycardia, and occurs in persons of all age groups.
aberrant conduction
The movement of electrical impulses through the heart along diseased or accessory pathways.
Why is ECG 1A conducted aberrantly?
ECG 1a. The last beat in the above ECG is conducted aberrantly and is due to an atrial premature contraction (APC) . One of. the reasons that this APC was conducted aberrantly is that cardiac cyle before the beat preceeding the APC is a long cycle . A short cycle coming after a long cycle eases aberrancy.
What is the aberration of the right bundle branch?
Since refractory period of the right bundle branch is longer than that of the left bundle branch, aberration occurs as right bundle branch block in 80% of the cases. In patients with abnormal hearts, aberration may be also seen as left bundle branch block . Any type of supraventricular rhythm may show aberrancy: sinus rhythm, nodal rhythm, ...
