Cardiovascular · UKMLA & AKT
Bundle branch blocks and bifascicular block
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
WiLLiaM MaRRoW - in LBBB: V1 = W-shape, V6 = M-shape. In RBBB: V1 = M-shape (RSR'), V6 = W-shape (deep S wave).
Discordant ST-T changes in BBB are secondary and expected - they do NOT indicate ischaemia in isolation. LBBB makes identifying ischaemia on ECG very difficult.
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