Is LAFB the same as LBBB?

Left anterior fascicular block (LAFB) is an abnormal condition of the left ventricle of the heart, related to, but distinguished from, left bundle branch block (LBBB). It is caused by only the anterior half of the left bundle branch being defective.

Is LAFB normal?

In general, the finding of isolated LAFB is a very common, nonspecific abnormality. This pattern may be seen with hypertension, aortic valve disease, coronary disease, and aging-related degenerative disease, and sometimes without identifiable cause (Fig. 8.10).

How is LPFB diagnosed?

The criteria to diagnose a LPFB on a 12-lead ECG include the following:

1. Right axis deviation of 90-180 degrees.
2. Presence of a qR complex in lead III and a rS complex in lead I.
3. Absence of right atrial enlargement, or RAE, and/or right ventricular hypertrophy, and RVH.

Which is a typical ECG of LAFB?

Typical ECG of LAFB, demonstrating: rS complexes in leads II, III, aVF, with small R waves and deep S waves qR complexes in leads I, aVL, with small Q waves and tall R waves Left Axis Deviation (LAD): Leads II, III and aVF are NEGATIVE; Leads I and aVL are POSITIVE

What are the ECG criteria for left anterior fascicular block?

The ECG criteria for a left anterior fascicular block (LAFB) or left anterior hemiblock (LAHB) are reviewed with links to 12-lead ECGs including bifascicular blocks and trifascicular blocks Left Anterior Fascicular Block (LAFB) ECG Review – Criteria and Examples | LearntheHeart.com

What are the criteria for sinus bradycardia ECG?

Sinus bradycardia fulfills the criteria for sinus rhythm but the heart rate is slower than 50 beats per minute. ECG criteria follows: Regular rhythm with ventricular rate slower than 50 beats per minute. P-waves with constant morphology preceding every QRS complex.

Where does left anterior fascicular block ( LAFB ) insert?

Left Anterior Fascicular Block (LAFB) In left anterior fascicular block (previously left anterior hemiblock), impulses are conducted to the left ventricle via the left posterior fascicle, which inserts into the infero-septal wall of the left ventricle along its endocardial surface.