Right bundle branch block Flashcards
1
Q
What is right bundle branch block?
A
As metrical activity travels down the bundle of his from the AV node to the bundle branch, the RBBB is blocked, delaying depolarisation of the right ventricle.
2
Q
How do I recognise RBBB?
A
- QRS complex greater then 0.12 seconds or 3 small squares.
- Positive QRS complex in V1 with rSR pattern or ‘M shape’
- Slurred S-wave in LI, aVL, V5 and V6- These are the lateral leads.
3
Q
Leads RBBB can be recognised in?
A
All but the best leads to observe are LII, V1 > V4
4
Q
Signs and symptoms of RBBB?
A
May be rare but can include:
- Chest pain
- Shortness of breath
- Dyspnoea
5
Q
Significance of RBBB ?
A
- Patients can live normal lives with RBBB.
- Important to check if they have a diagnoses of it already. If not may require further investigation.
6
Q
What is an incomplete bundle branch block?
A
An incomplete bundle branch block is an RSR pattern with a QRS duration of <0.12 seconds or 3 small squares
7
Q
Treatment of RBBB in prehospital care
A
No clinical significant difference between the two definition and will require treatment as per presentation.
