bundle branch blocks

• related: Cardiology
• source: https://litfl.com/right-bundle-branch-block-rbbb-ecg-library/
  • https://litfl.com/left-bundle-branch-block-lbbb-ecg-library/
• tags: #note

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• WilLiam MoRrow

RBBB

• RSR in V1
• slurred S in lateral leads
• sometimes T wave inversion in precordial leads, appropriate discordance
• incomplete RBBB: RSR in V1 but QRS < 120
• M shape, then W shape

LBBB

• Large S in V1; QS in V1 or rS (W shape)
• Large R in lateral leads
• Notched V6 (M)
• W shape in V1, M shape in V6

Links to this note

• Cardiology
  • bundle branch blocks
• EKG basics
  • related: Cardiology, bundle branch blocks, ECG samples
• Brugada syndrome
  • related: Cardiology, EKG basics, bundle branch blocks