Categories: Cardiology

Bifascicular and Trifascicular Block

Bifascicular Block:

1. Left anterior fascicular block (LAFB) or left posterior fascicular block (LPFB)

AND

2. Right bundle branch block (RBBB)

 

Trifascicular Block (impending):

1. Left anterior fascicular block (LAFB) or left posterior fascicular block (LPFB)

2. Right bundle branch block (RBBB)

AND

3. First degree AV Block (Delayed conduction through the remaining fascicle)

NOTE: If complete blockage, third degree heart block will occur!

REFERENCES

  1. Life in the Fast Lane
  2. Healio.com
Get Medical Pearls directly to your inbox every week!
Weekly posts with high yield medical knowledge, directly to your mailbox!
Dr. C Humphreys

Internal Medicine

Recent Posts

Obstructive sleep apnea & Polycythemia: Mechanism

Obstructive sleep apnea (OSA) is thought to lead to secondary polycythemia due to intermittent hypoxia,…

3 days ago

Pale Stool, Dark Urine & Biliary Obstruction: Mechanism

Catabolism of hemoglobin leads to the release of heme, which converts to biliverdin and then…

3 days ago

Why is Tongue Scalloping seen with Obstructive Sleep Apnea?

Tongue scalloping refers to the series of indentations along the sides of the tongue that…

2 months ago

Older Age and Obstructive Sleep Apnea (OSA): Mechanism

Older age is recognized as a risk factor for obstructive sleep apnea.[1] But why? Suspected…

7 months ago

How does Weight Affect Obstructive Sleep Apnea (OSA): Mechanism

Being overweight (BMI ≥ 25 kg/m2)/Obese (BMI ≥ 30 kg/m2) is one of the most…

7 months ago

Nocturia and OSA: Mechanism

Nocturia is a common symptom associated with obstructive sleep apnea. [1] Img Cred: Am J…

2 years ago

This website uses cookies.