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Heart Blocks ECG 10

  1. Normal sinus rhythm
  2. 3rd degree AV block (complete heart block)
  3. Right bundle branch block
  4. Left anterior fascicular block

Note that the combination of a right bundle branch block and a left anterior fascicular block is called a "bifascicular block". If there was a first degree AV block as well (prolonged PR interval), then the term "trifascicular" block is used.

Related Topic Reviews: 3rd Degree AV Block Review, Right Bundle Branch Block, Determining Axis